Lg 42pw35 - Training Manual

Training Manual

42PW350 Pl Di l42PW350 Plasma Display

Advanced Single Scan Troubleshooting42" Class HD 720p Plasma TV42" Class HD 720p Plasma TV

(41.6" diagonally)

P bli h d J 17th 2011Published June 17th, 2011Updated September 06th, 2011

See last page for update information

Preliminary:Contact Information, Preliminary Matters, Specifications,

TOPICS TO BE DISCUSSED

Troubleshooting:

, y , p ,Plasma Overview, General Troubleshooting Steps, Disassembly Instructions, Voltage and Signal Distribution

• Y-SUS Board Delivers Y-Scan, Logic Signals and FG5V to Y-Drive board.

Circuit Board Operation, Troubleshooting and Alignment of :• Switch Mode Power Supply Only RL_ON and M_On commands to SMPS

• Z SUS Board Also uses one Z SUB board for bottom panel connector

• Y-Drive Board

There is no VSC adjustment on this Y-SUS board.The Y-SUS receives VS, M5V from the Z-SUS.

• Z-SUS Board Also uses one Z-SUB board for bottom panel connector.

• Control Board

Routes VA to the Z-SUB then to the bottom right X-Board.Routes VS, M5V to the Y-SUS.

• 2 X Drive Boards (Left and Right)

• Main Board• Interconnect Diagram: 11X17 Foldout Section used as a quick reference sheet

June 2011 42PW350 Plasma 2

Interconnect Diagram: 11X17 Foldout Section used as a quick reference sheet.

42PW350 Plasma Display

Overview of Topics to be Discussed


The first section will cover Contact Information and Important Safety Precautions for the Customers Safety as well as the Technician and the Equipment.y q p

Basic Troubleshooting Techniques which can save time and money sometimes can be overlooked. These techniques will also be presented.

The next section will get the Technician familiar with the Disassembly, Identification and Layout of the Plasma Display Panel. y y

At the end of this Section the Technician should be able to Identify the Circuit Boards and have the ability and knowledge necessary to safely remove and replace any Circuit Board or Assembly.


Customer Service (and Part Sales) (800) 243-0000

LG Contact Information

Technical Support (and Part Sales) (800) 847-7597USA Website (GSFS) http://gsfs-america.lge.comCustomer Service Website http://www.us.lgservice.comp gKnowledgebase Website http://lgtechassist.comLG Web Training https://lge.webex.com

New: 2010/11 Wireless Ready Models Software Downloads

Presentations with Audio/Video and Screen Notations

LG CS Learning Academy http://ln.lge.com/ilearnhttp://136.166.4.200

Use http://LGLearn.comNo User Name/Password

T i i M l S h ti ith N i ti l B k k St t U S O ’ G id

User Name/Password required

Also available on the Plasma Page:PDP Panel Alignment Handbook,

Pl C t l B d ROM U d t (Ji i d)

Training Manuals, Schematics with Navigational Bookmarks, Start-Up Sequence, Owner’s Guides, Interconnect Diagrams, Dimensions, Connector IDs, Product Pictures and Features.

Published June 2011 by LG Technical Support and TrainingLG Electronics Alabama Inc

Plasma Control Board ROM Update (Jig required)


LG Electronics Alabama, Inc. 201 James Record Road, Huntsville, AL, 35813.

https://lge.webex.com/

IMPORTANT SAFETY NOTICE

Preliminary Matters (The Fine Print) Page 1 of 2

IMPORTANT SAFETY NOTICE

The information in this training manual is intended for use by persons possessing an adequate background in electrical equipment, electronic devices, and mechanical systems. In any attempt to repair a major Product personal injury and property damage can result The manufacturer orto repair a major Product, personal injury and property damage can result. The manufacturer or seller maintains no liability for the interpretation of this information, nor can it assume any liability in conjunction with its use. When servicing this product, under no circumstances should the original design be modified or altered without permission from LG Electronics. Unauthorized modifications will not only void the warranty but may lead to property damage or user injurymodifications will not only void the warranty, but may lead to property damage or user injury. If wires, screws, clips, straps, nuts, or washers used to complete a ground path are removed for service, they must be returned to their original positions and properly fastened.

CAUTIONCAUTION

To avoid personal injury, disconnect the power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks Also be aware that many household products present a weight hazardnecessary checks. Also be aware that many household products present a weight hazard. At least two people should be involved in the installation or servicing of such devices. Failure to consider the weight of an product could result in physical injury.


Preliminary Matters (The Fine Print) Page 2 of 2

ESD (Electrostatic Static Discharge)Today’s sophisticated electronics are electrostatic discharge (ESD) sensitive. ESD can weaken or damage the electronics in a manner that renders them inoperative or reduces the time until their next failure. Connect an ESD wrist strap to a ground connection point or unpainted metal in the product. Alternatively, you can touch your finger repeatedly to a ground connection point or unpainted metal in the product. Before removing a replacement part from its package, touch the anti-static bag to a ground connection point orremoving a replacement part from its package, touch the anti static bag to a ground connection point or unpainted metal in the product. Handle the electronic control assembly by its edges only. When repackaging a failed electronic control assembly in an anti-static bag, observe these same precautions.

l fRegulatory Information

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful g p p ginterference when the equipment is operated in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user isradio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna; Increase the separation between the equipment and the receiver; Connect the equipment to an outlet on a different circuit than that to which the receiver is connected; or consult the dealer or an experienced radio/TV technician for help.


Safety & Handling Regulations

Safety and Handling, Checking Points

1. Approximately 10 minute pre-run time is required before any adjustments are performed.

2. Refer to the Voltage Sticker inside the Panel when making adjustments on the Power Supply, Y-SUS and Z-SUS Boards.

3. Always adjust to the specified voltage level (+/- ½ volt) unless otherwise specified.

f f S4. Be cautious of electric shock from the PDP module since the PDP module uses high voltage, check that the Power Supplyand Drive Circuits are completely discharged because of residual current stored before Circuit Board removal.

4. C-MOS circuits are used extensively for processing the Drive Signals and should be protected from static electricity.

5. The PDP Module must be carried by two people. Always carry vertical NOT horizontal.

6. The Plasma television should be transported vertically NOT horizontally.

7. Exercise care when making voltage and waveform checks to prevent costly short circuits from damaging the unit.

8. Be cautious of lost screws and other metal objects to prevent a possible short in the circuitry.

9. New Panels and Frames are much thinner than previous models. Be Careful with flexing these panels. Be careful p g pwith lifting Panels from a horizontal position. Damage to the Frame mounts or panel can occur.

10. New Plasma models have much thinner cabinet assemblies and mounts. Be extremely careful when moving the set around as damage can occur.

1. Check the appearance of the Replacement Panel and Circuit Boards for both physical damage and part number accuracy.

2. Check the model label. Verify model names and board model matches.

Checking Points to be Considered


3. Check details of defective condition and history. Example: Y-SUS or Y-Drive Board Failure, Mal-discharge on screen, etc.

Basic Troubleshooting Steps

Define, Localize, Isolate and CorrectDefine, Localize, Isolate and Correct

• Define Look at the symptom carefully and determine what circuits could be causing the failure. Use your senses Sight, Smell, Touch and Hearing. Look for burned parts and check for possible overheated components. Capacitors will sometimes leak dielectric material and p p pgive off a distinct odor. Frequency of power supplies will change with the load, or listen for relay closing etc. Observation of the front Power LEDs may give some clues.

• Localize After carefully checking the symptom and determining the circuits to be checked y g y p gand after giving a thorough examination using your senses the first check should always be the DC Supply Voltages to those circuits under test. Always confirm the supplies are not only the proper level but be sure they are noise free. If the supplies are missing check the resistance for possible short circuits.p

• Isolate To further isolate the failure, check for the proper waveforms with the Oscilloscope to make a final determination of the failure. Look for correct Amplitude Phasing and Timing of the signals also check for the proper Duty Cycle of the signals. Sometimes g g p p y y g“glitches” or “road bumps” will be an indication of an imminent failure.

• Correct The final step is to correct the problem. Be careful of ESD and make sure to check the DC Supplies for proper levels. Make all necessary adjustments and lastly always


y j y yperform a Safety AC Leakage Test before returning the product back to the Customer.

42PW350 PRODUCT INFORMATION SECTION

This section of the manual will discuss the specifications of the 42PW350 Advanced Single Scan Plasma Display Television.


42PW350 Specifications

720P PLASMA HDTV42" Class (41.6" diagonal)

• 3D Capable TV1

• 2D to 3D Conversion

• TruSlim Frame

• 600Hz Max Sub Field Driving• 600Hz Max Sub Field Driving

• High Definition Resolution

• ENERGY STAR® Qualified

For Full SpecificationsSee the Specification Sheet

• Picture Wizard II

• Intelligent Sensor

S t E S i• Smart Energy Saving

• ISFccc® Ready


42PW350 Logo Familiarization Page 1 of 3

HD RESOLUTION 720P HD R l ti Pi l 1365 (H) 768 (V)HD RESOLUTION 720P HD Resolution Pixels: 1365 (H) × 768 (V)See and experience more. Pictures are sharper.Colors are more vibrant. Entertainment is more real. Everything looks better on an HDTV.

HDMI (1.3 Deep Color) Digital multi-connectivity HDMI (1.3 Deep color) provides a wider bandwidth (340MHz, 10.2Gbps) than that of HDMI 1.2, delivering a broader range of colors, and also drastically improves the data-transmission speed.

Invisible SpeakerPersonally tuned by Mr. Mark Levinson for LG TAKE IT TO THE EDGE newly introduces ‘Invisible Speaker’ system

y p p

TAKE IT TO THE EDGE newly introduces Invisible Speaker system, guaranteeing first class audio quality personally tuned by Mr. Mark Levinson, world renowned as an audio authority. It provides Full Sweet Spot and realistic sound equal to that of theaters with its Invisible Speaker.

Dual XD EngineRealizing optimal quality for all imagesOne XD Engine optimizes the images from RF signals as another XD Engine optimizes them from External inputs. Dual XD Engine presents


images with optimal quality two times higher than those of previous models.


600Hz Sub Field Firing:600Hz Sub Field Firing:Capture every moment. Tired of streaky action or unclear plays during the game? See sports, fast action and video games like never before. The 600Hz refresh rate virtually eliminates motion blur.

3.000,000 : 1 Contrast RatioStunning detail. No more worrying about dark scenes or dull colors. The Mega Contrast ratio of 3,000,000:1 delivers more stunning colors and deeper blacks than you can imagine.

TruSlim Design:At l th 1" thi k th T Sli F t i di t ti ith tAt less than 1" thick the new TruSlim Frame trims away distraction without compromising screen size.

USB 2.0:View videos and photos and listen to music on your TV through USB 2.0.



AV Mode "One click" Cinema, Sports, Game mode., p ,AV Mode is three preset picture and audio settings. It allows the viewer to quickly switch between common settings. It includes Cinema, Sports, and Game Modes.

Clear Voice Clearer dialogue sound Automatically enhances and amplifies the sound of the human voice frequency range to provide high-quality dialogue when background noise swellsnoise swells.

Save Energy, Save MoneyIt reduces the plasma display’s power consumption.The default factory setting complies with the Energy Star requirements

S E S M

The default factory setting complies with the Energy Star requirements and is adjusted to the comfortable level to be viewed at home.(Turns on Intelligent Sensor).

Save Energy, Save MoneyHome electronic products use energy when they're off to power features like clock displays and remote controls. Those that have earned the ENERGY STAR use as much as 60% less energy to perform these functions, while providing the same performance at the same price as less-efficient models. Less energy means you pay less on your energy


t e sa e p ce as ess e c e t ode s ess e e gy ea s you pay ess o you e e gybill. Draws less than 1 Watt in stand by.

(600 Hz Sub Field Driving)

600Hz Sub Field Driving

• 600 Hz Sub Field Driving is achieved by using 10 sub-fields per frame process (vs. Comp. 8 sub-field/frame)

• No smeared images during fast motion scenes

Original Image 10 Sub Fields Per Frame


Sub Field firing occurs using wall charge and polarity differences between Y-SUS and Z-SUS signals.

42PW350 Remote Control

TOP PORTION

BOTTOM PORTIONp/n AKB72914273


42PW350 Rear and Side Input JacksSIDE

INPUTS

USB for Music, Photos and Software

UpgradesAC In Upgrades

REARREARINPUTS

USB

HDMI 3

Composite Video/Audio


Generic Plasma USB Automatic Software Download Instructions1) Download the Software File.

Currently Installed Version

Software Version found on the USB Flash Drive

2) Copy new software (xxx.bin) into the root of the Jump Drive. Make sure you have the correct software file

File found on the USB Flash Drive

software file.3) With TV turned on, insert USB flash drive.4) You can see the message

“TV Software Upgrade” (See figure on right)5) Cursor left and highlight "START" Button and Highlight Start Press Select

push “Enter” button using the remote control. 6) You can see the download progress Bar.7) Do not unplug until unit has automatically

restarted.8) When download is completed you will see

Highlight Start Press Select

8) When download is completed, you will see “COMPLETE”.

9) Your TV will be restarted automatically.* CAUTION: Do not remove AC power or the USB Flash Drive. Do not turn off Power, during the upgrade process.


Software Files (when available), can be downloaded from GCSC or GSFS.com

Accessing the Service Menu

To access the Service Menu.1) You must have either Service Remote. )

p/n 105-201M or p/n MKJ391708282) Press “In-Start”3) A Password screen appears.4) Enter the Password.)

Note: A Password is required to enter the Service Menu. Enter; 0000Se ce e u te ; 0000

Note: If 0000 does not work use 0413.


MKJ39170828105-201M

2"50.8mm

9.1/8"231.1mm

42PW350 Dimensions

24-3/16"614.68mm

39"990.6mm

Remove 4 screws to remove stand for wall mount

Model No.Serial No.

Label

19-1/8"485mm

26.5/16"668.02mm

4-11/16"119mm

2-1/8"53.34mm

15-3/4"400mm

15-3/4"400mm

47.4 lbs with Stand41.1 lbs without StandWeight:

There must be at least 4 inches of Clearance on all sides

Max Watts 160WTypical: 125W0.2 Watts (Stand-By)

Power Consumption:

3-7/8"98mm

19 June 2011 42PW350 Plasma

3-11/16"93m

11-9/16"293.5mm

Center12-1/8"

307.34mm

19-1/2"495.3mmCenter Center

Center

SERVICE AND ADJUST MENU ITEMS

This section of the manual will discuss the Service Menu and the Adjust MenuIn the 42PW350 Advanced Single Scan Plasma Display Panel.In the 42PW350 Advanced Single Scan Plasma Display Panel.

Upon completion of this section the Technician will have a betterunderstanding of the Service and Adjust Menus used in this model.


1. Country Group (Press OK to Save) Country Group Code Country Group Country2. Tool Option Tool Option 1 Tool Option 2 Tool Option 3 Tool Option 4 Tool Option 53. Adjust White Balance:4. Adjust ADC: 480i Component 1080p Component RGB5. EDID(AC3): RGB HDMI1 HDMI2 HDMI3

02USUS

3277765

7519756014925

OK OK

OKOKOK

OKOK (0x5E)

OK (0x12,0xD2)OK (0x12,0xC2OK (0x12,0xB2

IN STARTModel Name: 42PW350-UASerial Number: 010PTZK1F285S/W Version: MICOM VersionSPI Boot VersionBOOT VersionTouch VersionEDID Version (RGB)EDID Version (HDMI)Chip Type3D ASIC VersionDebug StatusModule Rom Ver: RF Emitter Versioni

UTT : 12APP History Ver.:53810PQL DB:LGE_PG_LGT10_xxN42

1. Adjust Check2. ADC Data3. Power Off Status4. System 15. System 26. Model Number D/L7. Test Option8. External ADC9. Pattern Selection10. Panel Control11. Spread Spectrum12. Sync Level13. Stable Count14. ODC Test15. Power Error History

Adjust Check

: 03.26.02.11: 3.24.0: 4.24.00: 0.01.17: 0.05 (0x00): 0.01: 0.01: SATURN 7: 0.77: RELEASE: 42T3_4PV3A0: VB091

42PW350 Service Menu First Page


Bring up the Service Menu using the Service Remoteby pressing “In-Start” enter password 0413 or 0000.

Software Version

Video ProcessorChip Type

Control Board Software Version

Unit Total Time

Country Group

Priority AudioMode

0. POWER_OFF_BY_LOCAL_KEY1. POWER_OFF_BY_ACDET2. POWER_OFF_BY_REMOTE_KEY13. POWER_OFF_BY_LOCAL_KEY4. POWER_OFF_BY_ACDET5. POWER_OFF_BY_ACDET6. POWER_OFF_BY_ACDET7. POWER_OFF_BY_SW_DL8. POWER_OFF_BY_ACDET9. POWER_OFF_BY_LOCAL_KEY10. POWER_OFF_BY_LOCAL_KEY11. POWER_OFF_BY_REMOTE_KEY112. POWER_OFF_BY_REMOTE_KEY113. POWER_OFF_BY_ACDET14. POWER_OFF_BY_ACDET15. POWER_OFF_BY_LOCAL_KEY16. POWER_OFF_BY_LOCAL_KEY17. POWER_OFF_BY_LOCAL_KEY18. POWER_OFF_BY_LOCAL_KEY19. POWER_OFF_BY_REMOTE_KEY120. POWER_OFF_BY_REMOTE_KEY121. POWER_OFF_BY_ACDET22. POWER_OFF_BY_SW_DL23. POWER_OFF_BY_LOCAL_KEY

IN START Power Off Status

INSTOP (Instop Button on Serv. Remote)SW_DL (Software Download)AUTO_OFF (No Signal Time Out)OFF_TIMER (Auto Timer Off)

Model Name: 42PW350-UASerial Number: 010PTZK1F285S/W Version: MICOM VersionSPI Boot VersionBOOT VersionTouch VersionEDID Version (RGB)EDID Version (HDMI)Chip Type3D ASIC VersionDebug StatusModule Rom Ver: RF Emitter Versioni




Select Item 3

LOCAL_KEY (Key Board Power)REMOTE_KEY1 (Remote Power)ACDET (Loss of AC Power)SW_DL (Software Download Restart)


42PW350 Power Off Status (IN START) Screen

22

Most Recent

June 2011 42PW350 Plasma

CODE EXPLANATIONPOWER_OFF_BY_CPUCMD Power off by CPU Command POWER_OFF_BY_ABN Power off by abnormal statusPOWER_OFF_BY_KEYTIMEOUT Power off when TV is not turned off during a certain time

POWER_OFF_BY_ACDET Power off by not detecting AC (abnormal case) POWER_OFF_BY_RESET Power off by Micom Reset POWER_OFF_BY_5VMNT Power off by not detecting 5V monitoring POWER_OFF_BY_NO_POLLING Power off when receiving no acknowledge

POWER_OFF_BY_REMOTE_KEY Power off by remote keyPOWER_OFF_BY_OFF_TIMER Power off by Off timer POWER_OFF_BY_SLEEP_TIMER Power off by sleep timer

POWER_OFF_BY_FAN_CONTROL Power off by fan control (Not Used)POWER_OFF_BY_INSTOP_KEY Power off by InStop KeyPOWER_OFF_BY_AUTO_OFF Power off by auto off function POWER_OFF_BY_ON_TIMER Power off by On timer

POWER_OFF_BY_RS232C Power off by RS232C command POWER_OFF_BY_SWDOWN Power off by software download POWER_OFF_BY_LOCAL_KEY Power off by local key

POWER_OFF_BY_CPU_ABNORMAL Power off by CPU Abnormal status POWER_OFF_BY_INV_ERROR Power off by LCD module inverter error (LCD Only)POWER_OFF_BY_SW_DL Power off by Soft Ware update POWER_OFF_BY_UNKNOWN Power off by the other causes

42PW350 Power Off Status Details

23

(Not Used)


42PW350 Lip Sync Adjust (IN START) Screen



0. Baudrate1. 2 Hours Off (On Timer)2. 2 Hours Off (Screen Mute)3. 15Min Force Off4. Audio EQ5. Dynamic EQ6. A2 Threshold7. HDMI Sound(Port1)8. Lip Sync Adjust(DTV)9. Dimming10. Tuner Option11. Atten RF Signal12. UTT Reset13. Channel Mute14. Debug Status15. NVRAM Type16. HDEV17. Blue back18. China Cable SO19. Booster On (VHF)20. Booster Off (VHF)21. Booster On (UHF)22. Booster Off (UHF)

IN START SYSTEM 1115200

OnOffOnOnOn11

HDMI Port10

OnEnhanced Ghost

OffReset

OnRELEASEEEPROM

OffOnOn0000





SelectItem 4

SelectItem 8

-10 to 20

42PW350 UTT Reset (IN START) Screen


0. Baudrate1. 2 Hours Off (On Timer)2. 2 Hours Off (Screen Mute)3. 15Min Force Off4. Audio EQ5. Dynamic EQ6. A2 Threshold7. HDMI Sound(Port1)8. Lip Sync Adjust(DTV)9. Dimming10. Tuner Option11. Atten RF Signal12. UTT Reset13. Channel Mute14. Debug Status15. NVRAM Type16. HDEV17. Blue back18. China Cable SO19. Booster On (VHF)20. Booster Off (VHF)21. Booster On (UHF)22. Booster Off (UHF)

IN START SYSTEM 1115200

OnOffOnOnOn11

HDMI Port10

OnEnhanced Ghost

OffReset

OnRELEASEEEPROM

OffOnOn0000

Scroll to (UTT Reset)

Press (Select)Reset changes to Doing

then back to Reset

Scroll to (System 1)

thenRight Cursor

After Reset (Doing) has completed, Reset returns.After Exit the UTT Timer is

“0”

Note: After UTT is reset, the UTT time on the left will not reset to “0” until the Service Menu is exited.





ChangesTo “Doing”Unit’s Total Time

SelectItem 4

SelectItem 12


IN START1. AV/PC2. ISM3. Gamma4. Power Save5. APS Contrast6. OrbitPixel7. OrbitStep8. OrbitTime9. MRE(FMC)10. DPS211. GRP12. Module OSD13. Module XDP14. Formatter XDP15. Reset Use Time

Module Name:Rom Ver.Temperature:

Panel ControlAV

Auto0

Mode 0952

2 step120 sec.

OffOffOff0

OnOn

42PW350 Service Menu: Panel Control Shows Control Board Information


At the bottom right you can see the Panel Model Number, Control board Software Version and the Panel Temperature.

42T342T3_4PV3A025.00 Celsius





UTT Reset

Unit’s Total Time

SelectItem 10

Cursor Right to activate.Yes or No will appear.

UTT will not change until “In Start” key is pressed. Panel

Temperature

CTRL. Board ROM Version

Panel Model Number



42PW350 Model Number Download Screen


0. Model Name1. Serial Num.

Model Number D/L

Press OK to Save

42PW350-UA

Bring up the Service Menu using the Service Remote by pressing “In-Start” enter password 0413 or 0000.

Scroll down to item 6. Model Number D/L to highlight.Press “ENTER” or “Cursor Right”.

IN START

010PTZK1F285




To Change the Model Number:1) Use the cursor right or left to select the area to change. 2) Use the cursor up or down to change.3) When Model Number is correct, Press “ENTER” to Save4) Cursor right until there is no text cursor blinking.5) Cursor down to highlight “Serial Number” 6) Cursor Right to place blinking cursor under the first location and change (as in Item 2 above).5) Press “ENTER” to SaveNote: To return to the Model Number, Cursor right until there is no text cursor blinking and press the Up Cursor on the Remote. Cursor Right to place blinking cursor under the first location

When the Main Board is replaced, the Model Number and Serial Number must be corrected. Follow these instructions

SelectItem 6

Note: The Model and/or Serial No. will not change until you press the “In-Start” button

after any change has been made.

42PW350 Power Error History (IN START) Screen


IN START1. Adjust Check2. ADC Data3. Power Off Status4. System 15. System 26. Model Number D/L7. Test Option8. External ADC9. Pattern Selection10. Panel Control11. Spread Spectrum12. Sync Level13. Stable Count14. ODC Test15. Power Error History




1. Last History:2. Last History:3. Last History:

4. Error Count

POWER ERROR HISTORY

VA UVPVS OCPNONE

1) PFC_DET Error2) 5V OVP3) 5V UVP4) 17V OVP5) 17V UVP6) M5V OVP7) M5V UVP8) Vs OCP9) Vs OVP10) Vs UVP11) Va OVP12) Va UVP

5. Reset All

ffffffffffffff1ffffff1

PFC_DET: Power Factor Control DetectOVP: Over Voltage ProtectOCP: Over Current ProtectUVP: Under Voltage Protect


SelectItem 15

Service Menu: Downloading EDID Data

1) Press “ADJ” key.If Item 5 on Adjust Check in the 1st page of the Service Menu

When Item 10 was selected

If Item 5 on Adjust Check in the 1st page of the Service Menu shows AC3, this shows NG.

If NG was shown, highlight “Start” and press “Select” on the

If Item 5 on Adjust Check in the 1st page of the Service Menu shows EDID PCM this shows OK(PCM)

Password requiredTo enter ADJ Menu

, g g premote.“Writing” appears, then OK/(PCM) shows here. Now Item 5 on Adjust Check in the 1st page of the Service Menu shows “EDID PCM”.

If “R t” i l t d “E i ” ill d th thi hIf “Reset” is selected, “Erasing” will appear and then this shows “NG”.

When Item 11 was selected

If Item 5 on Adjust Check in the 1st page of the Service Menu shows PCM, this shows NG.

If NG h hi hli ht “St t” d “S l t“ th

If Item 5 on Adjust Check in the 1st page of the Service Menu shows EDID AC3 this shows OK(AC3)

If NG was shown, highlight “Start” and press “Select“ on the remote.“Writing” appears, then OK/(AC3) shows here. Now Item 5 on Adjust Check in the 1st page of the Service Menu shows “EDID AC3 ”.

Note: PCM is changed from NG to OK/(PCM) then AC3 will now be “NG”.


If Reset is selected, “Erasing” will appear and then this shows“NG”.

Note: AC3 is changed from NG to OK/(AC3) then PCM will now be “NG”.

Accessing the Host Diagnostic Screen (Page 1 of 2)

1) Place Television on the digital channel that

Use the Host Diagnostic screen to investigate the signal quality of a problem channel.

2) Bring up the Customer’s Menu. Highlight “CHANNEL”. Press “ENTER” on the remote.

4) Press the (1) Key 5 times. The Host Diagnostics screen appears.

) gmay be showing problems.

3) The “CHANNEL” Menu appears. See next page for details.


Host Information

Memory

Host Release Version

FAT Status (Main)

Current Channel (Main)

Current TemperatureMODULE Temperature: 34.5 Celsius

Channel Info : Digital 19-1

Parental Control : Channel is not blocked

Host Diagnostics

Model Name : 42PW350-UA (Plasma Display)

FLASH : 131072 KBDRAM : 262144 KBNVM : 128 KB

Firmware Version(MP) : 3.26.02.11(53810)Micom Version : V3.24.0Compile Date & Time : 20110131 & 08:45:52Compile User : sunbon.koo

Center Frequency : 663.00 MHzPCR lock : LockedModulation mode : QAM 256Carrier lock status : LockedSNR : 37 dBSignal level : 100%

Exit

31

42PW350 Understanding the Host Diagnostic Screen (Page 2 of 2)


DVI/HDMI StatusCan’t display this information now

Half Page Move Page ExitCH

Channel Selected Blocked or

Not Blocked

Software Version

ChannelFrequency

Program Clock Reference (Locked or No)Channel Type (8VSB, QAM 64, 256)

Channel (Locked or No)

Channel Signal Level (Above 80% good)

8VSB (Above 20 is good)QAM 64 (Above 24 is good)QAM 256 (Above 30 is good)

Channel Signal to Noise Ratio

ModelNumber

PanelTemperature

F = 9/5 (C+32)

3D SECTION AND 3D TROUBLESHOOTING

This section will give you an understanding of 3D as it relates to Televisions.

This section also includes 3D troubleshooting.troubleshooting.

Note: The 3D Glasses must be matedTo the Television so that multiple TVsCan operate in the same room with different glasses synchronized to the correct TV

HOW TO CONNECT THE 3D GLASSES

When initially switched on the device will automatically be connected to the TV with the

Can operate in the same room with different glasses synchronized to the correct TV.

When initially switched on, the device will automatically be connected to the TV with the strongest signal.

HOW TO RECONNECT THE 3D GLASSES

Press the power button for over eight seconds.

Release the button when the green LED light turns on. Then, you will see the green light blinkthree times before the device is switched off. If you switch the power on again, the glasses will


be connected to the TV or PROJECTOR with the strongest signal.

Each eye looks at an image from slightly different angles. Therefore, the brain takes these two different images and translates them into one image giving us depth perception. This is difficult to reproduce on a 2 dimensional screen We ha e to come p ith a scheme that ill allo s to see the same image from

3D Fundamentals (What is 3D?) From the Human Perspective

2 dimensional screen. We have to come up with a scheme that will allow us to see the same image from two different angles giving us 3D effects.

If the two images were added together without the

Note: The Left and Right eye are actually seeing the same image but from a different angle, but for this explanation one is shown inverted from the other for clarity purposes simply to show there is a difference

g gbrain doing the calculations to combine them, they would appear out of focus.


explanation one is shown inverted from the other for clarity purposes simply to show there is a difference between the two images seen by each eye.

Each Camera looks at an image from slightly different angles. Each camera generates it’s own video, we’ll call “Left Camera View” and “Right Camera View”. The Frame packing adds both of these videos together as described in the “3D Broadcasting” page

3D Fundamentals (What is 3D?) From the Electronic Perspective

together as described in the “3D Broadcasting” page.

Original Image

Left Camera View

Right Camera View

The two videos are separated by the Frame rate converter in the Television and put on the screen. The first horizontal line is the Left Camera view

Both Videos arePacked together

Note: The Left and Right Cameras are actually seeing the same image but from a different angle, but for this explanation one is shown inverted from the other for clarity purposes simply to show there is a

The first horizontal line is the Left Camera view and the 2nd line is the Right camera view. 3rd line is Left, 4th is Right and so on.

Packed togetherFor transmission.


this explanation one is shown inverted from the other for clarity purposes simply to show there is a difference between the two images seen by each camera.

3D Formatter- All Formats of input are available and converted by 3D technology- Full HD input available

3D Formatter

u put a a ab e- 3D Enhancement

3D Formatter2DRegular 2D

3D F t (F P k d)2D 3D to 2D

HDMI 1.3 / HDMI 1.4Input Capabilities

No glasses requiredOutput Capabilities

1) Side by Side R

L 2) Frame by Frame

or3D Formats (Frame Packed)

2) Top and Bottom

3) Checkerboard

Plasma (Active)

Synchronization required between glasses and TV

4) Frame Sequential(Full Resolution available)

R

L

HDMI 1.4 (Only)R

5) Over/UnderL / R represents;Left Camera View

Right Camera View


LRight Camera View

3D for All types of broadcasting signals1. Input of broadcasting signal

HDBroadcasting

SDBroadcasting

OnlineVideo

LG 3D TV 3D broadcasting

2. Press “3D” button for mode change3. Select type of input source, 4. Press “ENTER”.5. In case 3D looks *abnormal, press “3D Settings”

in the “Quick MENU”.*Abnormality may be caused by reversed L/R

Input

Input

Input

USBComponentC it

(1)

HDMIC tAbnormality may be caused by reversed L/R

order of the input signal. If TV already in Left/Right change to Right/Left or vice versa.

USBPortComposite

RF, S-VideoComponent

RF

(2)

Top & Bottom

(4)(3)

(5) (5)

2D to 3D Side by Side CheckerBoard

Single frame Sequential

Bottom


Note: Picture behind the menu is showing a side by side format.Note: HDMI 1.4 will automatically select 3D type for you.

Shutter glasses type 3D: Separating left and right images by synchronizing the TV and the glasses

3D Active Glasses Type3D Active Glasses Type

Fundamentals of Shutter glasses

< Shutter glasses 3D >Between Frames

Left Eye viewing left camera shot

Between Frames

Right Eye viewing right

Frames

The image is broadcast using two different viewing angles every other frame.

The 3D Glasses are then synchronized with the two different images to give the 3D effect.

viewing right camera shot


They are blanked between scene changes.

Convenient 2.4GHz RF Transmitter built-in to TV

LG RF 3D Emitter & Glasses

• Wider viewing angle• Longer Viewing distance• Longer battery life

(1.5h charging / 40h battery life)• Improved sync performance

2~7 Meter Viewing Distance (6.5 ft~ 22.9 ft)Maximum 10 Meter (32.8 ft)

User friendly Glasses1) L-frame for glasses users2) UV coating to prevent scratch

600

600

7m

3) LED indicator for user convenience4) Easy to Recharge with USB port

(Note: Glasses will work while being charged)5) Adjustable Nose Piece for comfort

RF TransmitterLocation

AG-S250


B tt

Active RF glasses 3D TV components

Battery

40Hr. Charge

USB Charge Port(8-pin mini USB)

1Hr. 50min Charge Time

AG-S2500.80mA/h

RF Receiver

*TN LCD shutter3D Sync signal

Shutter Actuator circuit board

Twisted State light passes O St t li ht bl k d

RF Syncsignal

TV with built in

light passes On State light blocked

*TN CD hTV with built in RF Transmitter

*TN = Twisted Nematic*TN LCD shutter


3D settings may help with 3D view pleasure.1 In case 3D looks *abnormal press “3D Settings”

3D Settings Menu

1. In case 3D looks abnormal, press 3D Settings in the “Quick MENU”.

3D Picture Size: Cuts off the outer edges of the picture and stretch it to fit the full screen in 3D mode.

3D Depth: Adjusts the distance between the object and the background in the picture to enhance the 3D effect in 2D to 3D mode.

3D View Point: Brings the picture (including both the object and background images) to the front or back to enhance the 3D effect in 3D mode.

(1)3D Picture Balance: Adjusts the color and brightness difference between the right and left sides of the picture in 3D mode.

3D Picture Correction: Changes the order of images in the right and left sides of the picture in 3D mode.


VIEWING CONDITIONS Maximum Optimum

3D Video viewing range and Compatible 3D Formats

ViewingDistance

7 m(22.9 ft)

2 m - 10 m(6.5 ft - 32.8 ft)

ViewingAngle 120º (When the viewing distance is 2 m (6.5 ft)

Signal Resolution HorizontalFrequency kHz

VerticalFrequency Hz Playable 3D video format

44 96 / 45 Top & Bottom Side by Side (*Also Component & DTV)

Accepted 3D Formats

HDMI

*720P 1280X72044.96 / 45

59.94 / 60Top & Bottom, Side by Side ( Also Component & DTV)

89.9 / 90.0 HDMI (V1.4 with HDMI 3D Frame Packing*1080i 1920X1080 33.72 / 33.75 59.94 / 60 Top & Bottom, Side by Side (*Also Component & DTV)

67 432 / 67 5 59 94 / 60Top & Bottom, Side by Side

Checker BoardHDMIInput

1080p 1920X1080

67.432 / 67.5 59.94 / 60 Checker BoardSingle Frame Sequential

27 24 Top & Bottom, Side by Side, Checker Board

53.95 / 54.00 23.98 / 24.00 HDMI (V1.4 with HDMI 3D Frame Packing

33.75 30 Top & Bottom, Side by Side, Checker Board

USBInput 1080p 1920X1080 33.75 30 Top & Bottom, Side by Side

Checker Board, MPO (Photo)

Additional HDMI 1.4V Information.


1) 3D Auto Detection (LG Does Support 2) Ethernet Capabilities (LG Does Not Support)3) Return Audio (LG Supported using SIMPLINK®) 2011 Models only.

42PW350 3D Troubleshooting Flow Chart Page 1 of 3


OK

Check 3D/Motion Remote RF Transmitter Board Connector pin 1 : (3.3V) NG

Replace Main board

Cable Open

Red Power LED should stay on solid for about 3 sec. then go off. When power button is pressed for Power Off, the LED will blink 3 times.Note 1: The Red LED will blink constantly for 1 minute if battery is discharged.Note 2: Glasses can operate using the USB connector plugged in if batteries are not charged.

Make sure the 3D Glassesare charged

Change the 3D GlassesAG-S250

No glasses sync

Continued on next page.

Check for 60Hz sync signal on pin 12 of P1404 NG

Check 3D Sync. It is output from IC1400 directly to the Front side of Board R1572 P1404 Pin 12 . Also Check ZD1408NG

No 3D

If you are having trouble seeing 3D, Try changing the 3D selection types if it is difficult to determine what format the 3D movie is in. Example: Top/Bottom, Side by Side, Checker Board, Frame Sequential.Make sure you are using at least version 1.3 HDMI cable. (1.4 HDMI will auto select).

Play a 3D Movie

A simple test is to hold the glasses about 1 ft. in front of you towards a white sheet of paper. The TV must be playing a 3D movie and be in the 3D mode. If the glasses sync up the paper will appear as looking through normal sun glasses, if not synced, the paper will appear amber in color.

Don’t forget to try swapping the L/R selection by pressing the “Quick Menu” button on the remote control.Charged

NoChange

Note: Motion Remote/3D Tx board connector has no ID

Check +3.3V for the Motion Remote board. P1404 Connector 1 pin : 3.3V

OK

NGNG

Replace Main board

OK

3.48V p/p60 Hz

1.59VDC

Glass turn off in 1 Min. with no 3D sync.Glasses turn off in 10 Min with no movement.

Check +3.3VRegulator IC506

EBT61267425EBR72942901EBR71638619

Note: R1572 and ZD1408 are directly to the right of P1404.

42PW350 3D Troubleshooting Flow Chart Page 2 of 3


Continued from previous page

Check for 60Hz sync to the 3D sync / Motion Remote board. Connector pin 12

NG Cable Open

Should be

Note: Motion Remote board Connector has no ID

OK

Check P1404 Connector pins 9, 10, 11(See Chart) Pin 9 or 10 should be high

OK

Check 3D / Motion RemoteConnector pins 9, 10, 11

RF Freq GPIO 0 (9) GPIO 1 (10) GPIO 2 (11)3D Disable 0 0 0

60Hz 1 0 059.94Hz 0 1 0

NGReplace Main board

OK

Replace 3D / Motion Remotep/n: EBR72499601

See next page for additional details

Note: If all are low, make sure you are in 3D Mode on the Television

3.48V p/p60 Hz

1.59VDC

Check 3D_SYNC LineControl P106 pin 79

Check 3D_SYNC LinePin 12

Control Board

42PW350 3D Sync Troubleshooting Flow Chart Page 3 of 3


Continued from previous page

3D_SYNC straight from the MCM (IC702) chip.

Check 3D_SYNC LineMain P1402 pin 2

3D_SYNC pin 12

To R1572

3D_SYNC straight from (IC3202) chip.

Note: The 3D sync on the LVDS cable is not the same as the 3D_SYNC route shown on

the Main board. This is just a TP.

GPI0 – 1 (pin 9, 10, 11)

Pin 9 or 10should be high

3.48V p/p60 Hz

1.59VDC

3.48V p/p60 Hz

1.59VDC

Connector has no ID

CONTROL BOARDP/N: EBR71200701

X125 MHz

IC702MCM

IC101

IC701

IC22SerialFlash

D1

IC703L1

P105

P107 P108 P22 n/c

Auto Gen

VS_DA

P2

P106

IC53

IC11

3.3V from IC53Pins 41~43

n/c Upgrades


4.94V

1.05V

1.06V

1.05V

3.3V 1.8V

1.8V On

3.31V

3.27V

12

32

12

32

1 2

3

DDRMemory

3D-SyncPin 50

3.48V p/p 60 Hz

IC101Micro/Video

Processor

P1401

IC1400

P902

12

32

P14041

23

2

IC1401

IC700

P700

12

32

IC1406

IC506

IC504

IC1407

IC1202

1 2 3

123

IC600

IC507

IC1404

L1402

IC502

L503

Q501

L506

IC1201

A2 A1

C

D200

IC103

Q901

L502

Q1401

C

B

E

C

B

E

Q1402

X1400

C

BE

Q1400

P501

X200

24MhzL700L701

L702

L703

R-R+L-L+

D501

IC501

TUNER

MAIN BOARDp/n: EBT61267425 AUSLLJR

Other Main Boards used

p/n: EBR72942901 AUSLLHR

C

B E

D

S

G

24Mhz

18. IF p17. IF n16. IF AGC15. Reset14. 3.3V13. 1.26V12. GND11. CVBS10. NC 9. SIF

8. NC 7. SDA 6. SCL 5. NC 4. NC 3. 5V

2. NC 1. NC

TU1300

3D Formatter

+3.3V Regulator

P1401LVDS

P106LVDS

Motion Remote Board

Pin 12 3D-Sync R1572 Front side of Board

3.48V p/p60 Hz

1.59VDC

DISASSEMBLY SECTION

This section of the manual will discuss Disassembly, Layout and Circuit Board Identification, of the 42PW350 Advanced Single Scan Plasma Display Panel.Board Identification, of the 42PW350 Advanced Single Scan Plasma Display Panel.

Upon completion of this section the Technician will have a betterunderstanding of the disassembly procedures, the layout of the printedcircuit boards and be able to identify each board.circuit boards and be able to identify each board.


Removing the Back Cover

To remove the back cover, remove the 29 screwsIndicated by the arrows.

(The Stand does not need to be removed).

PAY CLOSE ATTENTION TO THE TYPE SIZE AND LENGTHPAY CLOSE ATTENTION TO THE TYPE, SIZE AND LENGTHOf the screws when replacing the back cover.

Improper type can damage the front.


Identifying the Circuit BoardsIdentifying the Circuit BoardsCircuit Board Layout

Panel Voltage and Panel ID Label

FPCFPC

FPC

Y-SUS Z-SUSPower Supply

(SMPS)FPC

Y-Drive

Main Board

FPC

FPC

Z-SUB

F

e Board

ControlMain Board

TCPHeat Sink Side

Input

FPCFPCFPC

Right “X”Left “X”AC In (part of

main)

IR/LED Soft TouchMotion Remote andInvisible Invisible


Board Keypad Motion Remote and 3D Emitter (RF)

InvisibleSpeaker

InvisibleSpeaker

SC101L N

P813

SMPSPOWER SUPPLY

Boardp/n: EAY62170901

Top row OddBack row Even

P811 Z-SUSBoard

P7

p/n: EBR68342001

P2

P6

42PW350 Connector Identification Diagram


RIGHT X Board

Speaker (Front Right)

P100

Front “Soft Switch” Key Pad

FRONT IR

P201

P101

P107

CONTROLBoard

P1401

P902P1404

MAINBoard

P232P211LEFT X Board

P211P106

P204

P205

P206

P201

P202

P303

Y-SUSBoard

Y-DRIVEBoard

P106

Speaker (Front Left)

P105

P108

Z-SUB Board

p/n: EEBR68341901

p/n: EBR68288401

p/n: EBR68019901

p/n: EBR72942901 AUSLLJRp/n: EBT61267425 AUSLLHR

p/n: EAB62028901

p/n: EBR72499601p/n: EBR72650101

P331 P311

P206

P501P2

P163n/c

P4

P203

PANEL

p/n: EBR68342501

P201 P202 P203 P204 P205 P206 P301 P302 P303 P304 P305 P306

EAJ61527706 PDP42T30000.ASLGBEAJ61527743 PDP42T30000.ASLGM

p/n: EBR71200701

p/n: EBR68020001

MOTION REMOTE/3D EMITTER

p/n: EAB62028901

P212P102

P213P101P3

AC In

LVDS

P312

P202

P101

P103

P22n/c

P700

p/n: EBR71638619 Interchangeable

MAINBOARDS

S it h M d P S l B d R lNote: 1) Remember to be cautious of ESD as some semiconductors are CMOS and prone to static failure.

Disassembly Procedure for Circuit Board Removal

Switch Mode Power Supply Board Removal

Disconnect the following connectors: P811, P813 and SC101.Remove the 6 screws holding the SMPS in place.Remove the board. When replacing, be sure to readjust the Va/Vs voltages in accordance with the Panel Label Also re confirm VSC Vy and Z Bias as wellLabel. Also, re-confirm VSC, -Vy and Z-Bias as well.

Y-SUS Board RemovalDisconnect the following connectors: P206, and Ribbon Cable P101.To remove P101, lift up on the locking mechanism and pull the ribbon cable out.Remove the 8 screws holding the Y-SUS in place.Remove the Y-SUS board by lifting slightly upward (to clear standoff collars) and then to the right while gently prying apart P211~213. When replacing, be sure to readjust the Va/Vs voltages in accordance with the Panel Label.Confirm -Vy and Z-bias as well.

Y-Drive Board Removal

Confirm Vy and Z bias as well.

Disconnect P101~P106 Connectors to the Panel Remove the 3 screws holding the Y-Drive board in place.

Board Standoff

g pLift up slightly (to clear standoff collars), then slide to the left while gently prying apart P101, P102 and P106. Remove the Y-Drive Board.

Collar

Note: Y-SUS, Z-SUS and Y-Drive boards are mounted on board stand-offs that have a small collar. Th b d t b lift d li htl t l th ll B hi d h b d “Ch l t ” (d bb


The board must be lifted slightly to clear these collars. Behind each board are “Chocolate” (dense rubber like material) that act as shock absorbers. They may make the board stick when removing.

Z-SUS Board Removal

Disassembly Procedure for Circuit Board Removal (2)

Disconnect the following connectors: P2 and P7, then P6 by flipping up the locking mechanism and pulling out the ribbon cable. Remove the 4 screws holding the board in place.Lift up slightly to clear the screw stand-offs and pull the Z-SUS to the left to unseat P3 / P4 from the Z-SUB board and remove the Z-SUS board. When replacing, be sure to readjust the Va/Vs voltages in accordance with the Panel Label.Confirm VS, -Vy and Z-bias (VZB) as well.

Z-SUB Board RemovalRemove P203 connector. Disconnect P201 and P202 by Flipping up on the locking mechanism and pull out the FPC to the panel. Remove the two screws in the Z-SUB board. Pull to the right and remove Z-SUB.

Main Board RemovalDisconnect the following connectors: P1401 LVDS by Flipping up on the locking mechanism and pull out the LVDS cable. Disconnect P501 by pressing gently inward on the locking tabs and pull out. Disconnect P602, P1404 and P700. Remove the 4 screws holding the Main board in place and Remove the board. Remove the shield by lifting upward and to the left on the board.

Control Board Removalshield by lifting upward and to the left on the board.

Disconnect the following connectors: P2, P106 LVDS, P105, P107 and P108 by lifting up the locking tab. Remove the 4 screws holding the Control board in place and Remove the board. Pay attention to the bottom left back side of the board. There is a piece of rubber (Chocolate) that may fall off. Be sure to replace the rubber

ipiece.

FRONT IR/INTELLIGENT SENSOR and SOFT TOUCH KEY BOARD.Disconnect P100. The board is attached to the Front Glass.KEY PAD:

Front IR and Key Pad Removal


KEY PAD:The Key Pad is part of the Front IR/Soft Touch Key Board.

Make sure AC is removed.Lay the Television down carefully on a padded surface.

X Drive Circuit Board Removal Continued

Lay the Television down carefully on a padded surface.Make sure to use at least two people for this process so as not to flex the panel glass.

a) Remove the Back Cover.b) Remove the Stand (4 Stand Screws were removed during back removal). ) Di t th t t th l ft id f th M i b d P902 d P1404c) Disconnect the two connector on the left side of the Main board, P902 and P1404.

d) Remove the Stand Metal Support Bracket (4 Screws) 2 Plastic tap thread and 2 Metal thread. e) Remove the two Vertical support Braces marked “E”.

Note: There are 4 Screws per/brace, 2 Plastic tap thread and 2 Metal thread. (Note, you can slide the Heat Sink to the left and out without removing the vertical braces).( , y g )

f) Remove the 7 screws holding the Heat Sink. (Warning: Never run the set with this heat sink removed). To remove the heat sink, lift up to release the tacky Chocolate (heat transfer material) and slide the heat sink to the left to clear the connector wires on the right side.Note: There may be conductive tape on the heat sink that must be removed if present. Also note that there several pieces of Chocolate heat transfer material attached all the way across theAlso, note that there several pieces of Chocolate heat transfer material attached all the way across the underside of the heat sink. There is a mark on eitherside of the tape on the heat sink which shows its locations.

X-DRIVE LEFT OR X-DRIVE RIGHT REMOVAL:

Chocolate Heat transfer

materialHeat sink

Disconnect all TCP ribbon cables from the defective X-Drive board and all other Ribbon cables going to that particular board.

Remove the 5 screws holding the defective X-Drive board in place.

Heat sink


Remove the board. Reassemble in reverse order. Recheck Va / Vs / VScan / -VY / Z-Drive.

Getting to the X Circuit Boards

ELeft E

Ri ht

With Stand removed

Right

D

Warning:

Never run the TV with the TCP Heat Sink removed

CTCP Heat Sink removed

FHeat Sink

D

B


Warning Shorting Hazard: Conductive Tape. Do not allow to touch energized circuits.

Left and Right X Drive Connector Removal

From the X Boards to the Control Board

See below to Remove the Connections on the X-Boards.

Disconnect connector P233

Va from the Y-SUS to From the X-Boards to the Control Board.

There may be tape on these connectors.

P232, P331Are the same

Left X Only

Connectors from Left and Right X Boards

Remove tape (if present) and Gently pry the l ki h i d d th ibb

P211 to P311Left X to Right X

Connectors from Left and Right X Boards

P211 P311locking mechanism upward and remove the ribbon cable from the connector.

Carefully lift the TCP ribbon up and off.It may stick be careful not to crack TCP

P211, P311Are the same

Gently lift the locking mechanism

It may stick, be careful not to crack TCP.(See next page for precautions)Removing Connectors to the TCPs.

TCPGently lift the locking mechanism

upward on all TCP connectors Left X: P201~206

Right X: P301~306 Example


Cushion (Chocolate)Flexible ribbon cable connector

TCP (Tape Carrier Package) Generic Removal Precautions

Lift up the lock as shown using your fingernail.p g y g(The Lock can be easily broken.It needs to be handled carefully.)

Separate the TCP from the connector as shown.TCP Film can be easily damaged.

Handle with care.

The TCP has two small tabs on each side which lock the ribbon cable fully into the connector They have

Tab

Tab

fully into the connector. They have to be lifted up slightly to pull the connector out.Note: TCP is usually stuck downto the Chocolate heat transfer material, be Very Careful when


material, be Very Careful when lifting up on the TCP ribbon cable.

Left and Right X Drive Removal

Remove the 5 screws in Left or Right X-Boards, (9 Total)Shared with the

Right X

Shared with the The Left X Board drives the Right 1/2 of the side of the screen vertical electrodes.Shared with the Left X

The Left X Board drives the Right 1/2 of the side of the screen vertical electrodes.Viewing from the Front of the TV.

The Right X Board drives the Left 1/2 of the side of the screen vertical electrodes. Viewing from the Front of the TV.



CIRCUIT OPERATION, TROUBLESHOOTING AND CIRCUIT ALIGNMENT SECTION

p y

This Section will cover Circuit Operation, Troubleshooting and Alignment of the Power Supply, Y-SUS Board, Y-Drive Boards, Z-SUS Board, Control Board, Main Board and the X Drive BoardsMain Board and the X Drive Boards.

At the end of this Section the technician should understand the operation of each circuit board and how to adjust the controls. The technician should be able with confidence to troubleshoot a circuit board failure, replace the defective circuit and perform all necessary adjustments


perform all necessary adjustments.

3.3VP106

P204

P205

P206

P201

P202

P203

42PW350 Signal and Voltage Distribution Block

Display Panel HorizontalElectrodes, Sustain

Y-SUS Board

P101

P811

P813SK101

STB +5V

SMPSTurn On

Commands

SMPSBoard

ACInputFilter

P6

SMPS OUTPUT VOLTAGES IN STBY

Stand By:STB +5

Logic SignalsTo Y-SUS and

Y-Drive P1401

P700

MAIN BoardSpeakers

X-Board-RightP201 P202 P203 P204 P206 P301 P302 P303 P306

RGB Logic Signals

RGB Logic Signals

CONTROLBoard

Y Drive

Z-SUS Board

P107

P211 P232 P331 P311

Display Panel Vertical Address (Colored Cell Address)

Display PanelHorizontal Electrodes

Sustain

18V / M5V

RL_ONM_On

STB5V, +5V, 17V to Main BoardVS, VA and M5V to Z-SUS.

SMPS OUTPUT VOLTAGES IN RUN

18V / M5V Z Drive Control Signals

FPCs

FPCs

3.3VSTBY

P22

P206

Note: Va not used

by Z-SUS only fused and routed to Z-SUB then to

X-Board R

P2

P4

P105

Note: 18V not usedby Control

LVDS

Va

FPCs

FPCs

FG5V (5V), FG15V (15V) Measured from

Floating Ground

+17V, +5V, AC DetM5V, VA, VS

Display EnableVideo

Step 1: RL_ON: 17V, 5V, AC_Det, Error Det,Step 2: M_On: M5V, Va, Vs

P302

Z-SUB Board

3.3VP213

FG5VFG15V

18V

SMPS TURN ON SEQUENCE

P501


Floating Gnd (FG)Drive Signals, FG5V

P108

P205 P304

Error Com

Run:AC Det+5, 17V

VSM5V

P305

P2P102 P212

P101 P213

FG5VFG5V

FGFG

FGFG

ScanScan

Data Data

Voltages Developed on the

Y-SUS

VSC-VY

When M5V arrives

When VS arrives

P7VS, VA, M5V

P902

FT. IR / Keys

P1404

MotionRemote

P201

P202

VA

P3

P103P

101

3.3V

3DTransmitter

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

3.3VVATCP

P312P100

X-Board-Left

FPC: Flexible Printed Circuits

TCP: Taped Carrier Package

VSM5V

M5V: Monitor 5VVA: Voltage for AddressVS: Voltage for SustainSwitch Mode Power Supply

Panel Label Explanation

(1) Panel Model Name(2) Bar Code(3) Manufacture No.

(9) TUV Approval Mark (Not Used)(10) UL Approval Mark(11) UL Approval No.

(4) Adjusting Voltage DC, Va, Vs(5) Adjusting Voltage (Set Up / -Vy / Vsc / Ve / Vzb)(6) Trade name of LG Electronics(7) Manufactured date (Year & Month)

(12) Panel Model Name(13) Max. Watt (Full White)(14) Max. Volts(15) Max Amps(7) Manufactured date (Year & Month)

(8) Warning(15) Max. Amps


Adjustment Notice

C

All adjustments (DC or Waveform) are adjusted in WHITE WASH.Customer’s Menu, Select “Options”, select “ISM” select “WHITE WASH”.

It is critical that the DC Voltage adjustments be checked when;1) SMPS, Y-SUS or Z-SUS board is replaced.2) Panel is replaced, Check Va/Vs since the SMPS does not come with new panel.3) A Picture issue is encountered

ADJUSTMENT ORDER “IMPORTANT”C O G S S

3) A Picture issue is encountered4) As a general rule of thumb when ever the back is removed

DC VOLTAGE ADJUSTMENTS1) POWER SUPPLY: VS, VA (Always do first)2) Y-SUS: Adjust –Vy, VSC 3) Z-SUS: Adjust Z-Bias (VZB) Remember, the Voltage Label MUST be followed, 3) Z-SUS: Adjust Z-Bias (VZB)WAVEFORM ADJUSTMENTS1) Y-SUS: Set-Up, Set-Down

it is specific to the panel’s needs.

Power Supply

All label references are from a specific panel

Panel“Rear View”

The Waveform adjustment is only necessary1) When the Y-SUS board is replaced2) When a “Mal-Discharge” problem is

encounteredSet-Up Ve-Vy Vsc ZBias


All label references are from a specific panel. They are not the same for every panel encountered.

3) When an abnormal picture issues is encountered

SWITCH MODE POWER SUPPLY SECTION

This Section of the Presentation will cover troubleshooting the Switch Mode Power Supply for the Single Scan Plasma. Upon completion of the section the technician will have a better understanding of the operation of the Power Supply Circuit and will be able to locate voltage and test points needed for troubleshooting and alignments.

• DC Voltages developed on the SMPS• Adjustments VA and VS.

Always refer to the Voltage Sticker located on the back of the panel, in the upper Left Hand side for the correct voltage levels for the VA, VS, -VY, VSC, and Z Bias as these voltages will vary from Panel to Panel even in the same size category.y g ySet-Up and Ve are just for Label location identification and are not adjusted in this panel.

SMPS p/n: EAY62170901Ch k th ilk l b l th t t f th P S l b d t id tif th t tCheck the silk screen label on the top center of the Power Supply board to identify the correct part number. (It may vary in your specific model number, always confirm part number).

On the following pages, we will examine the Operation of this Power Supply.


The Switch Mode Power Supply Board Outputs to the :

Switch Mode Power Supply Overview

VAZ-SUS Board

VS

M5V

To ZY-SUS, fused then to Z-SUB, then to the X-Board Left, then X-Right.Primarily responsible for Display Panel Vertical Electrodes.

Drives the Display Panel’s Horizontal Electrodes. (From Z-SUS to Y-SUS).

Used to develop Bias Voltages on the Z-SUS then routed to the Y-SUS, p g ,Then Routed to the Control board and then back to the Z-SUS Board.

Main Board 17V Audio B+ Supply, Tuner B+ Circuits5V Signal Processing Circuits

STBY 5V Microprocessor Circuits

Also AC_Det (if missing, Mutes the Audio and Error_Det (not used)

Adjustments There are 2 adjustments located on the Power Supply Board VA and VS. The M5V i dj t d d fi d All dj t t d f d t Ch ij M5V is pre-adjusted and fixed. All adjustments are made referenced to Chassis Ground. Use “Full White Raster” 100 IRE

VA

VS

VR502

VR901


VA VR502

Example:Model : PDP 42T3###Voltage Setting: 5V/ Va:55/ Vs:200N.A. / -200 / N.A. / N.A. / 125

VA VS

42PW350 SMPS Layout Drawing


P811 Connector SMPS to Z-SUS P7Pin Label Run Diode Check

1~2

3~4

5

6

*VS

Gnd

*VA

200V OL

n/c n/c

Gnd Gnd

55V OL

M5V OV 2.16V

*VS/VA Varies by Panel Label

n/cn/c

P813 Connector SMPS to Main P501Pin Label Stby

18

16

15

13-14

Auto_Gnd

AC_Det

RL_On

Gnd

0V

3.46V

0V

STBY 3.46V

M_On17

9-12

5-7

3-4

1-2

8

Gnd

Error_Det

5.1V

Gnd

17V

Gnd

Gnd

3.39V

0V

0V

Run Diode Check

Gnd OL

3.29V OL

4.14V 3.07V

2.22V OL

5.16V 2.51V

Gnd

Gnd

Gnd

Gnd

4.89V 2.92V

5.16V 2.14V

17V 3.1V

INPUT: 100~240V ~ 50/60Hz 3.2A17V: 17V = 1.0A5.1V: 5.1V = 3.0ASTBY5V: 5V = 1.0A

VS: 199-203V = 1.3AVA: 55V = 1.5AM5V: 5.1V = 2.5APDP Module Max: 210W

XP5 42T3

LG Electronics

VS TP

F3022.5A/250V

STBY 160VRUN 390V

P811

P813

VA TP

F10110A/250V

SMPSP/N: EAY62170901

P702

SC101

RL103

T901

L601

L602

VSSupply

VASupply

5VSupply

17VSupply

F3014A/250VSTBY 160VRUN 390V

VR502VA Adj

VR901VS Adj

D602

Q601

Q602

D101

Q802

Q801

IC301

Q356

D352

Q355

D351

Q501

D504

D901

D902

Power Supply Circuit Layout

To Z SUS

VS VR901

P811

To Z-SUS

Fuse F301160V Stby390V Run

VSSource

VS VR901

PFCVA VR501

4Amp/250V

Fuse F302160V Stby

VASource

Primary Source

STBY-5VM5V, +5VSource

Circuit 160V Stby389V Run

2.5Amp/250V

STBY-5V+5V M5V

RL103

Main Fuse

+5V, M5Vand

ControllerOn Back of the boardController

17VSource

To MAIN

P813AC InputSC 101

F101BridgeRectifier N/C10Amp/250V


SC 101P702

Power Supply Basic OperationAC Voltage is supplied to the SMPS Board at Connector SC101 from the AC Input assembly. Rectified by the Bridge rectifier D101 generates a primary B+. The Power factor circuit generates a Primary supply which can be read at Fuse F301 and F302 160V. This primary voltage is routed through T901 and routed to the Standby 5V supply. The STBY5V (standby) is p y g g y pp y ( y)B+ for the Controller chip on the back of the board (IC701) on the SMPS and output at P813 pins 13 and 14 then sent to the Main board for Microprocessor (IC101) operation (STBY 3.46V RUN 5.16V). The Main board will receive +5V_ST (STBY 3.46V RUN 5.16V) which is sent to the +3.3V_ST regulator IC500. The 3.3V_ST is used by the Micro circuitry.

When the Microprocessor (IC101) on the Main Board receives a “POWER ON“ Command from either the Power button th R t IR Si l it t t hi h (2 22V) ll d RL ON t Pi 15 f P813 Thi d th R l Ci itor the Remote IR Signal, it outputs a high (2.22V) called RL_ON at Pin 15 of P813. This command causes the Relay Circuit

to close RL103 which allows the primary voltage to the PFC circuit (Power Factor Controller) to rise to 390V which can be read measuring voltage at Fuses F301 and F302 from “Hot” Ground. AC Detection (AC Det) is generated on the SMPS, by rectifying a small sample of the A/C Line and routed to the Controller (IC701) where it outputs at P813 pin 16 (4.15V) and sent to P601 to the Main Board where it is sensed by the Audio Processor IC700 pin 23.

When RL ON arrives the run voltage +5V source becomes active and is sent out P813 (5 16V at pin 5 6 and 7) to theWhen RL_ON arrives, the run voltage +5V source becomes active and is sent out P813 (5.16V at pin 5, 6 and 7) to the Main Board P501. The (Error Det) from the SMPS Board to the Main Board can be measured at pin 8 of P813 (3.39V STBY and 4.89V RUN), but it is not used. The RL-ON command also turns on the 17V (Audio B+ 17V) which is also sent to the Main Board. The 17V Audio supply outputs to the Main board at P813 pins 1 and 2 and used for Audio processing and amplification by IC700.

The next step is for the Microprocessor IC101 on the Main Board to output a high (3.29V) on M_ON Line to the SMPS at P813 Pin 17 which is sensed by the Controller IC701, turning on the M5V line and outputs at P811 pins 6 to the Z-SUS board.

The Controller (IC701) also uses the M_ON line to turn on the VA and the VS supplies. (Note there is no VS On Command i thi t) VS i t t t P811 t th Z SUS b d P7 (VA i 5 d VS i 1 d 2) N t Th V i f d thin this set). VS is output at P811 to the Z-SUS board P7. (VA pins 5 and VS pins 1 and 2). Note: The Va is fused on the Z-SUS then routed out P3 to the Z-SUB and then out P203 to P312 to the X-Board Right. VS is also routed out of the Z-SUS P2 pins 6 and 7 to the Y-SUS P206.AUTO GND Pin 18 of P813: This pin is grounded on the Main board. When it is grounded, the Controller (IC701) works in the normal mode, meaning it turns on the power supply via commands sent from the Main board. When AUTO GND is floated (opened) it pulls up and places the Controller (IC701) into the Auto mode In this state the Controller turns on the


floated (opened), it pulls up and places the Controller (IC701) into the Auto mode. In this state, the Controller turns on the power supply in stages automatically. A load is necessary to perform a good test of the SMPS if the Main board is suspect.

7

42PW350 Television Turn On Sequence

Stand By 5V

Power On

Remote Power Key

AC Det.

SOC_ResetR200/C142

MAIN Board

RL On

MicroprocessorIC101

Error Det.

1

26

5

6

7

At point TV is in Stand-By state. It isEnergy Star Compliant.Less than 1 Watt

5

In Stand-By Primary side is 160VIn Run (Relay On) Primary side is 390V

3

CONTROL

X BoardLeft

8

3.3V RegIC500 2

Error Det.

Relay On

Y-SUSZ-SUS

18V

X BoardRight

STBY 5V

M5V

7

4

2

VS

VA

7

Front IR / Soft Touch Key PadBoard

(SMPS)

IfMissingAudioMutes

5V

17V AudioIC700

17V

17V Reg

6

+5V toIC506 +3.3V Reg

All EDID ICs

M_On

FG5V Floating Gnd

6

NotUsed

STBY 5V Reg

Error Det.

3.3VST

M_On

7

9

9

STBY3.46V

RUN5.16V

18V M5V

Power Key

IC5075V_TU

Va

Va3.3V

5

F301F302


Not Used

Y DR

IVE

7Va

Reg

Vs Reg

VS

9

M5V Reg

8

M5V

18VReg

7

7

AC Det

AC In

RL On

RL On

3.3V Reg

Remote or Key Pad

1st

2nd

3rd

Relay+5V

Regulator

7

4

3.3V

8

IC700AudioAmp

3

5V Generation

8

VS M5V VS Z-SUB

VA

VA

VA 85VFGReg

M5V

77

VA

8

M5V

7M5V

VS

Power Supply Va and Vs Adjustments

Important: The Power Supply adjustments “Must” be performed “First” before any

Example Voltage LabelMust be performed First before any

other adjustments.

V TP

VAVR502

VSVR901Important: Use the Panel Label

Not this book for all voltage adjustments.Vs TP

Pin 1 or 2

Va TPPin 6 or 7

Use Full White Raster “White Wash”For all Adjustments.

Vs Adjust:Place voltmeter on VS TP. Adjust VR901 until the reading matches your Panel’s label.

Va Adjust:Place voltmeter on VA TP. Adjust VR502 until the reading matches your Panel’s label.


42PW350 Power Supply Static Test with Light Bulb Load

Note:Always test the SMPS under a load using the 2 light bulbs. Abnormal operational conditions may result if not loaded.

Any time AC is applied to the SMPS, STBY 5V will be 3.46V and will be 5.14V when the set turns on.AC DET WILL NOT be present until set comes on, if missing it will mute the audio.Error line WILL NOT be present until set comes on, but it’s not used.

P813

67

Using two 100 Watt light bulbs, attach one end to Vs and the other end to ground. Apply AC to SC101. If the light bulbs turn on and VS is the correct voltage, allow the SMPS to run for several minutes to be sure it will operate under load. If this test is successful and all other voltages are generated, you can be fairly assured the power supply is OK. Note: To be 100% sure, you would need to read the current handling capabilities of each power supply listed on the silk screen on the SMPS and place each supply voltage under the appropriate load.

Note:To turn on the Power Supply;1) With Main Board connected, press power.2) Without Main Board connected SMPS will turn on automatically.

Check Pins 1 or 2for Vs voltageP811

Check Pins 5for Va voltage


CURRENT LABEL

Check Pins 6for M5V voltage

VS TP

F3022.5A/250V

STBY 160VRUN 390V

P811

P813

VA TP

F10110A/250V

VR901VS Adj


P702

SC101

RL103

T901

L601

L602

VSSupply

VASupply

5VSupply

17VSupply


VR502VA Adj

Gnd

VS

100W100W

12 or Pins

P811

Check Pins 13 or 14for 5V SBY (5.22V)

Check Pin 8for Error Det (4.95V)

Check Pin 5,6 and 7for (+5.22V)

Check Pins 1 or 2For 17V (17V)

Check Pin 16for AC Det (4.96V)

INPUT: 100~240V ~ 50/60Hz 3.2A17V: 17V = 1.0A5.1V: 5.1V = 3.0ASTBY5V: 5V = 1.0A

VS: 199-203V = 1.3AVA: 55V = 1.5AM5V: 5.1V = 2.5APDP Module Max: 210W

XP5 42T3

LG Electronics

WARNING: Remove AC when adding or removing any plug or resistor.

Power Supply Static Test (Forcing on the SMPS in stages)

TEST CONDITIONS:Connector going to the Z-SUS P811 is disconnected. P601 on the Main board disconnected (coming in on P813).Use the holes on the connector P501 (Main Board side) to insert the resistors or jumper leads.Connect (2) 100 Watt light bulbs in series between VS and Ground.

When the supply is operational in its normal state the Auto Ground lineat Pin 18 of P813 is held at ground by the Main Board.This Power Supply can be powered on sequentially to test the Controller Chip IC701 operational capabilities and for troubleshooting purposes. By disconnecting P501 on the Main board, pin 18 is opened. To return theBy disconnecting P501 on the Main board, pin 18 is opened. To return the SMPS to the normal state for the Static Test procedure, this pin must be grounded. (See first step A below).

Note: Leave previous installed 100Ω resistor in place when adding the next resistor.

(A) Ground the Auto Gnd Line (Pin 18) will allow the supply to be powered up one section at a time.

(B) Add a 100Ω ¼ watt resistor from 5V Standby to RL_ON and the 17V and 5V Run Lines on P813 will become active Also AC-Det andand 5V Run Lines on P813 will become active. Also AC-Det and Error_Det will go high.

(C) Add a 100Ω ¼ watt resistor from any 5V line to M_ON (Monitor On) to make the M5V, VS and VA lines operational. P811 (VS pins 1 and 2) (VA pins 5) and the (M5V pins 6)


P811 (VS pins 1 and 2) (VA pins 5) and the (M5V pins 6).

P813 SMPS Connector Identification, Voltages and Diode Check

P813 "SMPS" to P601 "Main"

P813Pin Label STBY Run No Load Diode Check

18 eAuto_Gnd Gnd Gnd 4.87V OL

17 bM_ON 0V 3.29V 0V OL

16 a dAC Det 0V 4 15V 4 95V OL16 AC Det 0V 4.15V 4.95V OL

15 aRL_ON 0V 2.22V 0V OL

13-14 STBY_5V 3.46V 5.16V 5.2V OL

9-12 Gnd Gnd Gnd Gnd Gnd18 a cError_Det 3.39V 4.89V 4.94V OL

5-7 a5.1V 0V 5.16V 5.2V 2.38V

3-4 Gnd Gnd Gnd Gnd Gnd

1 2 a17V 0V 17V 17V OL

Note:This connector has two

a Note: The 17V, 5V, AC_Det and Error Det turn on when the RL_On command arrives.b Note: The M5V, Va and Vs turn on when the M_On (Monitor On) command arrives.c Note: The Error Det line is not used in this model.d Note: If the AC Det line is Missing the Audio will Mute

1_2 a17V 0V 17V 17V OL

rows of pins.Even on bottom row.

Odd on top row.

Note: If the AC Det line is Missing, the Audio will Mute.e Note: Pin 18 is grounded on the Main board. If this line is floated, the SMPS turns on

Automatically when AC is applied.


Diode Mode Readings taken with all connectors Disconnected. DVM in Diode Mode.

P811 & SC101 SMPS Connector Identification, Voltages and Diode Check

SC101 AC INPUT

Standby Run Diode ModeConnector Pin Number

SC101 120VAC 120VAC OpenL and N

P811P811 "Power Supply" to P7 "Z-SUS"

Pin Label Run Diode Check

1~2 Vs *200V OL

Vs TPn/c n/c n/c n/c

3~4 Gnd Gnd Gnd

5 Va *55V OL

1

5 Va 55V OL

6 M5V 5.06V 2.39V

* Note: Voltages vary according to the Panel Label

Z-SUS routes Va to the Z-SUS and then to the Bottom X-Right. Vs routed to Y-SUS from P2 on the Z-SUS.

M5V routed through Z-SUS to Control board and to Y-SUS.`

Va TP



This Section of the Presentation will cover troubleshooting the Z-SUS Board Assembly. Upon completion of this section the Technician will have a better understanding of the circuit and be

Z-SUS SECTION

Upon completion of this section the Technician will have a better understanding of the circuit and be able to locate voltage and diode mode test points needed for troubleshooting and all alignments.

Note: The Z-SUS can run “Stand-Alone” in the 42T3 Panel Models.

• DC Voltage and Waveform Test Points• Z BIAS Alignment• Diode Mode Test Points

LOCATIONS:

OPERATIONAL VOLTAGES:

Power Supply Supplied VSM5VVA

Also Routed to Y-SUS Board.

Also Routed to the Y-SUS and to the Control Board.

Not used by the Z-SUS but Routed to the Z-SUB and then to the Right X-Board

Y-SUS Supplied 18VDeveloped on Z-SUS Z Bias

then to the Right X-Board.

Routed through Control Board


Simplified Block Diagram of Z-SUS (Sustain) Board Z-SUS Block Diagram

Y-SUS Board Power Supply Board

Via 2 FPC

Control Board18V

VS, M5V andERR_COM

M5V

M5V

VS, VA andM5V Z-SUB

Via 2 FPC

Flexible PrintedCircuits

18V

Z-SUS board receives VS and M5V SMPS and 18V from the

Control board

M5V VA

Receives Logic

Signals

PDP

Display

G tCircuits generate erase,sustain waveforms

Panel

NO IPMs

GeneratesZ Bias 125V

FET Makes Drive waveform

VAVA


X-Board RightX-Board LeftVAVA

Z-SUS Board Component IdentificationP/N EBR68342001

P2VS, M5V to

Y-SUS.Z-BiasVR1 Z-Bias TP

P7In on this Connector:

VS, M5V and VA

Top Two Pins are VA

P4

Y SUS.Also Error Com

Z-Bias TPR151

Z-SUSWaveformTest Point

J17Z-SUS

W f

No IPMs

In on this Connector:M5V from SMPS to the Y-SUS generates +18V.M5V and 18V are routed

J17WaveformDevelopment and

outputFETsP6

from Control

through the Control board.

Logic Signals generated on the Control board.

P3 To Z-SUB

P3

Control


P3 To Z-SUB

Example:

Model : PDP 42T3###Voltage Setting: 5V/ Va:55/ Vs:200N.A. / -200 / N.A. / N.A. / 125

Z-Bias P2 Connector Z-SUS to Y-SUS P206


1~3

4~5

6

7

8

15V

M5V

Y-OE

CTRL_OE

VZ_CON

2.18V

1.03V

GndOL

9 GND Gnd

OL

10

11

12

13

14

ZBIAS

N/C

ZSUSDN

Gnd

ZSUSUP

15 Gnd

OL

OL

Gnd

OL

Gnd

OL

42PW350 Z-SUS Layout Drawing


*VS Varies with Panel Label

P7 Connector Z-SUS to SMPS P811Pin Label Run Diode Check

1~2

3~45

6

*VS

Gnd

*VA

200V OL

n/c n/c

Gnd Gnd

55V OL

M5V 5.06V 1.03V

*VS/VA Varies by Panel Label

n/cn/c


1~45

6~78

9~11

ERROR

n/c

VS

n/c

Gnd

102V OL

n/c n/c

200V OL

n/c n/c

Gnd Gnd

12 M5V 5.06V 1.03V

18.2V

5.06V

Gnd

3.25V

Gnd

0.05V

1.92V

Gnd

Gnd

0.22V

Gnd

0.79V

P6

FS2 VA

18V J1

J17

Z-SUSWaveform

P2

Vzbias TPR151

P4

10A/125V

7A/125V

6.3A/250V

P7

P3

Top 2 Pins are VA

Z-SUSP/N: EBR68342001

FS1 VS

FS3 (M5V)

5V J28

R1Y-OE

VR1Vzbias

FS1/FS2: Diode CheckOL: Connected or DisconnectedFS3: Diode Check0.76V: Connected1.03V: Disconnected

The Z-SUS will run stand alone.Disconnect P2 to the Y-SUS.Disconnect P105 on CTL. Board.Jump 17V from the SMPS J2 (just left of P813) to Z-SUS J1 (just above P6) connector.Ground Y-OE Z-SUS (bottom R1).Output Waveform J17 (281V p/p).

P6 Connector Z-SUS to Control P2

The Z-SUS (in combination with the Y-SUS) generates a SUSTAIN Signal and an ERASE PULSE for generating SUSTAIN and DISCHARGE in the Panel.

Z-SUS Waveform

g g

This waveform is supplied to the Z-SUB through P3 and P4 and then to the panel through two FPC (Flexible Printed Circuit) connections P201 and P202.

Reset

Y DriveW f

577V p/p

Oscilloscope Connection Point.

J17 to check Z Output waveform.

Right Hand Side Center.Z D i

Waveform

Right Hand Side Center.

Vzb voltage *125V ± 1V (*See Your Label)

Z DriveWaveform

(Vzb) Z Bias VR1 manipulates the offset of this waveform segment.

230V p/p

100V per/div 100uSec

TIP: The Z-Bias (VZB) Adjustment is a DC level adjustment.This is only to show the effects of Z-Bias on the waveform.

p

TIP: To help lock the scope when capturing the Z-SUS Waveform, us the VS DA TP on the Control Board for an External Clock


This Waveform is just for reference to observe the effects of Zbz adjustment

VS_DA TP on the Control Board for an External Clock.

VZB (Z-Bias) VR1 Adjustment

Read the Voltage Label on the panel when adjusting

Top Right of Z-SUS Board

VZB (Z Bias)VR1 VZB (Z Bias) TP LOCATION

VZBVR1

VR1 VZB (Z-Bias) TPR151

LOCATION

+ -

Set should run for 15 minutes, this is the “Heat Run” mode.Set screen to “White Wash” mode or 100 IRE White input. All SMPS adjustments should have been completed.1. Place DC Volt meter between VZB TPs.


2. Adjust VZB (Z Bias) VR1 in accordance with your Panel’s voltage label.

Z-SUS Board Fuse Identification

FS2

P/N EBR68342001

FS2VA Fuse

10A / 125V

FS3M5V Fuse

FS1VS Fuse

M5V Fuse7A / 125V

6.3A / 250V


P7 Connector to SMPS P811 Voltages and Diode ChecksVoltage and Diode Mode Measurements

P2 Location: Top LeftP7 "Z-SUS" to "SMPS" P811

Pin 1Pin Label Run Diode Check1~2 +Vs *200V OL3~4 Gnd Gnd Gnd

5 +Va *55V OL5 +Va *55V OL6 M5V 5.06V 1.03V

* Note: Varies according to Panel Label

There are no Stand-By voltages on this connector



P2 Connector to Y-SUS P206 Voltages and Diode ChecksVoltage and Diode Mode Measurements

P2 Location: Top LeftP2 "Z-SUS" to "Y-SUS" P206

Pin Label Run Diode CheckPin Label Run Diode Check1~4 ER_PASS 98V~102V OL

5 n/c n/c n/c6~7 +Vs *200V OL

Pin 1

8 n/c n/c n/c9~11 Gnd Gnd Gnd12 M5V 5.06V 1.03V

* Note: This voltage will vary in accordance with Panel Label




P6 Connector to Control P2 Voltages and Diode ChecksVoltage and Diode Mode Measurements

LocationBottom Left hand side

P6 "Z-SUS Board" to P2 "Control"Pin Label Run Diode Check1~3 (+15V) 18.2V 2.18V4~5 M5V 5.06V 1.03V

6 Y-OE 0.05V OL7 CTRL_OE Gnd Gnd8 VZ CON 3 25V OL

Pin 18 VZ_CON 3.25V OL9 Gnd Gnd Gnd10 ZBIAS 1.92V OL11 n/c n/c OL11 n/c n/c OL12 ZSUSDN 0.79V OL13 Gnd Gnd Gnd14 ZSUSUP 0.22V OL


15 Gnd Gnd Gnd



Testing the Z-SUS without the Y-SUS (Stand-Alone)This procedure will test the Z-SUS, Power Supply

and Control board without the Y-SUS. Tip: On SMPS just to the left of P813. Use jumper J2 for 17V.

(1) Disconnect P206

(1) Jump 17V (J2) SMPS to J1 on the Z-SUS

(2) Ground Y-OE(Bottom of R1)

(1) Disconnect P813

(4) Check J17for 281V p/p

(1) Disconnect P101

Leave P6 to P2 connected

for 281V p/p

(3) Apply AC

Tip: Disconnect P206 on Y SUS Jump “Only” M5V to the Y SUS (Not VS) If this brings up the 18V on P101 pins


Tip: Disconnect P206 on Y-SUS. Jump Only M5V to the Y-SUS (Not VS). If this brings up the 18V on P101 pins 24~27, then leave P101 connected. There will be no need to jump 17V to the Z-SUS.

Y-SUS Board develops the V-Scan drive signal to the Y-Drive boards.

Y-SUS BOARD SECTION (Overview) p/n: EBR68341901

This Section of the Presentation will cover alignment and troubleshooting the Y-SUS Board for the Single Scan Plasma. Upon completion of the Section the technician will have a betterunderstanding of the operation of the circuit and will be able to locate voltage andDiode mode test points needed for troubleshooting and alignmentsDiode mode test points needed for troubleshooting and alignments.

• Adjustments• DC Voltage and Waveform Checks• Diode Mode Measurements

Operating Voltages

Z-SUS SuppliedFrom SMPS

VS Supplies the Panel’s Horizontal Electrodes. (Routed from the Z-SUS board).M5V S li Bi t Y SUS (Al t d t th C t l B d th Z SUS)From SMPS

Y-SUS Developed -VY VR502V SET UP VR601V SET DN VR401

M5V Supplies Bias to Y-SUS. (Also routed to the Control Board then Z-SUS).

-VY Sets the Negative excursion of Reset in the Drive Waveform.SET UP sets amplitude of the Top Ramp of Reset in the Drive Waveform.SET DOWN sets the Pitch of the Bottom Ramp for Reset in the Waveform.Used internally to develop the Y-Drive signal (Also routed to the Control Board

18V / VSC

Floating Ground FG 5VFG 15V

Used internally to develop the Y Drive signal. (Also routed to the Control Board then routed to the Z-SUS board).Note: There is no VSC or 18V adjustment on this model.

Used on the Y-Drive board (Measured from Floating Gnd)Used in the Development of the Y-Drive Waveform (Measured from Floating Gnd)


Y-SUS Block Diagram

Power Supply Board - SMPSZ-SUS Board

Distributes Vs, M5V, Va

Z-SUB

Distributes Va

Simplified Block Diagram of Y-Sustain Board

Distributes M5V

Distributes 18V / M5V

Y-SUS Board

Distributes Vs, M5V

Distributes M5VReceive M5V, Vs

from Z-SUSDistributes 18V

Control Board

VSM5V

Generates Vsc and -VyFrom VS by DC/DC Converters

Also controls Set Up/Down

Circuits generate Y-Sustain Waveform

Right X BoardGenerates Floating Ground

Distributes VA

Distributes 3.3V

M5V

FETs amplify Y-Sustain Waveform

g5V & 15V by DC/DC Converter

Also 18V by same DC/DC

FG5VLeft X Board

Logic signals needed to generate drive waveform

Y-Drive BoardReceives Scan Waveform Display Panel

Logic signals needed to scan the panel


Logic signals needed to generate drive waveform

Y-SUS Board Layoutp/n: EBR68341901

P206M5V, VS and ERR_COMfrom Z-SUS

VR601Set Up

T Y D i

All Floating Gnd

P213

-Vy TP

To Y-Drive

1~10 Floating Gnd11~12 FG5V

18V (pins 28~30)to Control for Z-SUSM5V (pins 24-27) for both

VR401Set Up

VR502-Vy

1~2 Y-SCAN3 4 VPP

C213P212

Logic Signals from the Control Board

Ribbon

P101FS501 (18V)

P211

Logic Signals to

3~4 VPP6~12 Scan Data


2A/125VLogic Signals toY-Drive Board

42PW350 Y-SUSLayout Drawing


Example:

Model : PDP 42T3###Voltage Setting: 5V/ Va:55/ Vs:200N.A. / -200 / N.A. / N.A. / 125

-Vy


1~45

6~78

9~11

ERROR

n/c

VS

n/c

Gnd

102V OL

n/c n/c

200V OL

n/c n/c

Gnd Gnd

12 M5V 5.03V 1.15V


28~30

24~27

20~23

19

18

15V

5V

Gnd

Dummy2

Y-OE

1.13V

1.15V

OL2.02V

17 PC OL

Gnd

16

15

14

13

12

ER_DN

DATA_PRE

ER_UP

SC_A

RAMP_UP

11 STB

10 RAMP_BLK

9 CLK

8

7

6

5

4

SUS_DN

DUMMY_3

DUMMY_1

DUMMY_4

SUS_UP_0

3 CTRL_OE

2 RAMP_DN

1 Gnd

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

OL

Gnd

OL

18.2V

4.94V

2.14V

0.03V

1.84V

Gnd

0.5V

0.01V

1.45V

0.22V

1.5V

0.3V

1.07V

0.6V

2.14V

1.07V

1.35V

2.71V

0.75V

0.11V

Gnd

2.17V

P212 Connector Y-SUS to Y-Drive P102Pin Label Run Diode Check

1~1011~12

Floating Gnd

FG5V

FGnd FGnd

5.06V 1.57V

P213 Connector Y-SUS to Y-Drive P101Pin Label Run Diode Check

1~12 Floating Gnd FGnd FGnd

P206 Y-SUS to Z-SUS P2

P101 Y-SUS to Control P105


1~2 VSC (Y-Scan) 146.2V OL

3~4 VPP 145V OL

5 n/c n/c OL

6 SUS_DN (FG) FG FG

7 CLK 0.92V 1.46V

8 STB 2.24V 1.46V

9 OC1 2.26V 1.54V

10 DATA 0V 1.46V

11 OC2 2.8V 1.54V

12 SUS_DN (FG) FG FG

Black Lead on FG (Floating Gnd)

P211 "Y-SUS" to "Y-Drive" P106

D506 18V SourceD502 -Vy Source 200VD503 VSC Source 146V

P212

P211

P213

-Vy TPR201

-Vy AdjVR502

P101

P206

Y-SUSP/N: EBR68341901

C213

T501

T502

FG5VJ54

OE J73FS501

18V

18V J55

M5V J13

Use Left leg of C213 for Y-Drive TP.

Y-Drive board removed 470Vp/pWith Y-Drive board 485Vp/p

FG15VJ66

VR601Set-Up

VR401Set-Dn

D506

D502D503

D508 FG15V SourceIC508 FG5V Source

Back of Board

Scan FG

M5V J35

There are Chocolate pieces between the Y-SUS and the Panel. Be sure to return

them to there correct location if they should fall off when removing the Y-SUS.

TIP:You can run FG supplies and 18V

Remove All Connectors.Short OE (J73) to Gnd.

Supply any 5V to the Y-SUS and Gnd.Use J35 or J13 as M5V TP.

-VY Adjustment

These are DC level Voltage Adjustments. They are generated when the VS voltage arrives on the board

CAUTION: Use the actual panel label and not the book for exact voltage settings.This is just for example

They are generated when the VS voltage arrives on the board.

PROCEDURE:Set should run for 15 minutes, this is the “Heat Run” mode.Set screen to “White Wash”. -Vy1) Adjust –Vy VR502 to Panel’s Label voltage (+/- 1V)

-Vy

Location: Bottom Center of boardJust Left of Transformer T501

VR502-VY ADJ

-Vy TPR201

+-

Voltages Reads Positive

Location: Bottom Center of boardJust above Transformer T501Note: There is no VSC adjustment in this model.


Y-Drive Signal Overview

Y-Drive Test Point (Under 2nd Buffer from Top)

Note, this TP (VS_DA) can be

used as an External(Under 2 Buffer from Top) used as an External Trigger for scope

when locking onto the Y-Drive (Scan) or

the Z-Drive signal.

This signal can also

NOTE: The Waveform Test Points

This signal can also be used to help lock

the scope when observing the LVDS

video signals.NOTE: The Waveform Test Points are fragile. If by accident the land is torn and the run lifted, make sure there are no lines left to right in the screen picture.

There are several other test points on either the Upper or Lower Y-Drive boards that can be used.Basically any output pin on any of the FPC to the panel are OK to use.


Observing (Capturing) the Y-Drive Signal for Set Up Adjustment

Fi 1

Set must be in “WHITE WASH” All other DC Voltage adjustments should have already been made.

AdjustmentArea

Fig 1:As an example of how to lock in to the Y-Drive Waveform. Fig 1 shows the signal locked in at 2ms per/div. Note the 2 blanking sections.The area for adjustment is pointed out within the Waveform

FIG12mS

Area to expand

Blanking Blankingj p

Fig 2:At 200uSec per/division, the area of the waveform to use for SET-UP or SET-DN is now becoming clear.Now only one blanking signal is present

FIG2200uSArea to

expand

AdjustmentArea

Fig 3:At 100us per/div the area for adjustment of SET-UP or SET-DNi i t i It i tli d ithi th W f

Now only one blanking signal is present.

FIG3

p

Expanded from above

is now easier to recognize. It is outlined within the Waveform.Remember, this is the 1st large signal to the right of blanking.

TIP: If you expand to 40uSec per/division, the Area for Set-Up

100uS

155Vp/p

Expanded from above

y p padjustment for: SET-UP can be made using VR601 and theSET-DN can be made using VR401. It will make this adjustment easier if you use the “Expanded” mode of your scope

Area for Set Up adjustment

Blanking


Expanded mode of your scope.

195 uSecArea for Set-Dn

adjustment

Observe the Picture while making these adjustments Normally they do not have to be done

Set Up and Set Down AdjustmentsSet must be in “WHITE WASH”

All other DC Voltage adjustments should have already been made.

Observe the Picture while making these adjustments. Normally, they do not have to be done.

ADJUSTMENT LOCATION: Center Right of the board.

Waveform TP on the Y-Drive Board

Y-Drive Test Point

U d 2nd B ff f t

A

VR601

Under 2nd Buffer from top

SET-UP ADJUST:1) Adjust VR601 and set the (A) portion of the signal to

match the waveform above. (155V p/p ± 5V)

B

ADJUSTMENT LOCATION:

SET-DN ADJUST:2) Adjust VR401 and set the (B) time of the signal to match

the waveform above. (195uSec ± 5uSec)VR401

B

TIP: To help lock the scope when capturing the Y SUS W f th VS DA TP th C t l


Bottom RightJust above P101

Y-SUS Waveform, us the VS_DA TP on the Control Board for an External Clock.

Set Up or Down Adjustment ExtremesSet Up swing is Minimum 146V Max 204V p/p Set Dn swing is Minimum 146uSec Max 206uSec

Normal155V

BackPorch

Normal

Too Short146uSec

Too Low146V

Normal195uSec

B k

206uSec200V off th Fl

Too High204V

BackPorch

the Floor

Floor

Normal155V


Y-SUS Board Troubleshooting Y-ScanCaution: Do not use C213 for adjustments on the Y-Scan

signal. This is just a Test Point for board operation.

Y-SUS Board develops the Y-Scan drive signal to the Y-Drive board The Y-SUS (Y-Scan) signal can be

TIP: Use C213 Right leg to test for V-Scan signal when the Y-Drive board is removed

to the Y Drive board. The Y SUS (Y Scan) signal can be tested on the left leg of C213 if the Y-Drive board is defective and has to be removed. (Check for 470V p/p)

C213Left Leg Y-SCAN


P213 Y-SUS Board Connector to P101 Y-Drive (Floating Ground)

P101 P213

All pins are Floating Ground.

Y-DriveBoard

Y-SUSBoard


P212 Y-SUS Board Connector to P102 Y-Drive (Floating Ground 5V)

Y Drive Y SUSP212 "Y-SUS" to "Y-Drive" P102

Y-DriveBoard

Y-SUSBoard Pin Label Run Diode Check Diode Check

1~10 FGnd FGnd FGnd FGnd

11~12 FG5V 5.06V 1.63V 0.56V

Floating Ground 15V

TPPins 1~10 Floating Ground

Black LeadFloating Gnd

Red LeadFloating Gnd

Note: Pin 1 is at the top.P211

FG5V (4.9V) measured from Pins 11 or 12 to Floating Gnd.

For Floating Ground, use any pin on P213. P102

Floating G d 5V TP g , y p

P102Ground 5V TP


P211 Y-SUS Board to Y-Drive P106 Logic Signals Explained

P211 Connector

Pins 7~11Pin Label

1~2 VSC (Y-Scan)

3~4 VPP

(4mSec per/div)

P211

3 4 VPP

5 n/c

6 SUS_DN (FG)

CThese signals look very similar

due to the fact they are read from Chassis Gnd, but they are actually Floating Ground related.DO NOT hook scope Gnd to Floating Gnd TP

ith t I l ti T f

7 CLK

8 STB

9 OC1

10 DATA

All logic pins about (420V p/p)

without an Isolation Transformer.

Y-Drive Y-SUS

10 DATA

11 OC2

12 SUS_DN (FG)

Pins 7~11 are Logic (Drive) Signals to the Y-Drive Upper.Y-DriveBoard

Y-SUSBoardP106


P106 P211

P211 Y-SUS Connector Diode Mode Testing

Measurements taken from Floating Gnd.For Floating Ground use any pin on P213.



1 2 VSC (Y S ) 146 2V OL1~2 VSC (Y-Scan) 146.2V OL

3~4 VPP 145V OL

5 n/c n/c OL

6 SUS DN (FG) FG FG6 SUS_DN (FG) FG FG

7 CLK 0.92V 1.46V

8 STB 2.24V 1.46V

9 OC1 2.26V 1.54V

Y-Drive Y-SUS

10 DATA 0V 1.46V

11 OC2 2.8V 1.54V

12 SUS_DN (FG) FG FGY DriveBoard

Y SUSBoard

Y-Drive Board should be DISCONNECTEDf th Di d M d t t

Diode Mode Readings taken with all connectors Disconnected.

DVM in Diode Mode



for the Diode Mode test. DVM in Diode Mode.

Y-SUS Floating Ground (FG 15V, FG 5V) and 18V Checks and TestTIP: Some Circuit components are on the back of the board. To Test these voltages, remove the board completely,

supply Ground and any 5V supply Y-SUS. Ground OE Jumper J73.

Floating Ground checks must be made from Floating Ground. Use any pin on P213.

These voltages are generated when the M5V arrives on the board.

FG 15V J66D506 Cathode

Run: 18.2VDiode Check

1 13V

D506 18.2VFG 5V J54 1.13V

Location

T502

J73 OE

Location Back Side of BoardSource FG15V (Floating Ground 15V) D508 cathode.

Source FG5V (Floating Ground 5V) FG15V i l t d d t 5V b IC508

Must be grounded to test FG5, FG15V


is regulated down to 5V by IC508. and 18V with only 5V applied to board.

Y-SUS 18V Fuse Information

LocationLocation

FS501(18V)( )

2A/125V

FS501 Protects 18V line (created by D506 and T502). 18V is used on the Y-SUS and leaves the Y-SUS on P101 pins 28~30 to

the Control Board. Then leaves the Control board on P2 pinsthe Control Board. Then leaves the Control board on P2 pins 13~15 and goes to the Z-SUS arriving on P201 pins 1~3.

Diode Check with Board Disconnected.0.5V Red Lead on Chassis Gnd

1 13V Black Lead on Chassis Gnd

Diode Check with Board Connected.0.85V Black lead on Chassis Ground.


1.13V Black Lead on Chassis Gnd

P206 Y-SUS Voltage and Diode Mode Measurement

P206 "Y-SUS" to "Z-SUS" P2

P206

P206 Y-SUS to Z-SUS P2Pin Label Run Diode Check1~4 ER_PASS 98V~102V OL

5 n/c n/c n/c

6~7 +Vs *200V OL

8 n/c n/c n/c9~11 Gnd Gnd Gnd12 M5V 5.06V 1.15V

* Note: These voltages will vary in accordance with Panel Label



P101 Y-SUS to Control P101 Plug Voltage ChecksThere are No Stand By

Voltages on this Connector

TIP: Use the Control Board (P101) side of this connector to make voltage readings

TIP: The ribbon does not come with a new Y-SUS or Control board.

TIP: Use the Control Board (P101) side of this connector to make voltage readings.

P101 "Y-SUS" to P105 "Control"

Pin Label Run Diode Check Pin Label Run Diode Check28 30 15V 18 2V 1 13V 11 STB 1 5V OL28~30 +15V 18.2V 1.13V 11 STB 1.5V OL24~27 +5V 4.94V 1.15V 10 RAMP_BLK 1.07V OL

20~23 Gnd Gnd Gnd 9 CLK 0.6V OL

19 Dumy2 2.14V OL 8 SUS_DN 2.71V OL18 Y-OE 0.03V 2.02V 7 DUMMY_3 2.14V OL17 PC 1.84V OL 6 DUMMY_1 1.07V OL16 ER_DN 0.5V OL 5 DUMMY_4 1.35V OL15 DATA_PRE 0.01V OL 4 SUS_UP_0 0.75V OL14 ER UP 0 3V OL 3 CTRL OE 0 11V OL14 ER_UP 0.3V OL 3 CTRL_OE 0.11V OL

13 SC_A 1.45V OL 2 RAMP_DN 2.17V OL

12 RAMP_UP 0.22V OL 1 Gnd Gnd Gnd



(Y(Y--Drive Explained)Drive Explained)Y-DRIVE BOARD SECTION

Y-DRIVE BOARD

p/n: EBR68288401

The 42PW350 uses 8 Driver ICs on one Y-Drive Board commonly called “Y-Drive Buffers” but are actually Gate Arrays.

Y-Drive Board works as a path supplying the Sustain and Reset waveforms which are made in the Y-Sustain board and sent to the Panel through Scan Driver IC’s.

The Y-Drive Boards receive a waveform developed on the Y-SUS board then selects the horizontal electrodes sequentially starting at the top and scanning down the panel.top and scanning down the panel.Scanning is synchronized by receiving Logic scan signals from the Control board.


Key Points of interest are;

Y-Drive Board Layout

Key Points of interest are;

There are 6 FPC (Flexible Ribbon Cables) connecting the Y-Drive board to the Panel. These FPC connect to a total of 1080 individual l t d d t i i V ti l l tielectrodes determining Vertical resolution.

Floating Ground is delivered to the Y-Drive board via all 3 connectors. P101 is only FG.

Y S d VPP d li d t th Y D i

Y-DRIVE BOARD

P101 All PinsFloating Ground

Y-Scan and VPP are delivered to the Y-Drive board by P106.

The Y-Drive board operates from Floating Ground, (no reference to Chassis Gnd). However, whenP102 top 10 pins FG (no reference to Chassis Gnd). However, when reading the Y-Drive Waveform with a scope, use chassis ground only.

Floating Gnd 5V can be measured across C18 or C523 f t l t l ti it

Bottom 2 pins FG5V

P106Top 2 pin Y-ScanPins 10~9 VPP C523 surface mount electrolytic capacitors or

Fuse FL1 next to P102.

Pins 10 9 VPPPins 1~6 Logic (Scan

Control signals


Y-Drive Diode Check Scan and FG

Y SUSPANEL

This checks the output Buffers or the input side of the board.

Y-SUS SIDE

PANEL SIDE

FG5V TP

P101Floating Gnd

Any Connector to the Panel (Buffer Output TP) Front Side

C18 +

FG5V TP

Scan Signal TPOL with Red Lead on Scan1.13V with Black Lead on Scan

Diode Mode Reading from Floating GroundFloating Gnd

FL1

P102

FG5V TP (P106 pins 2 and 3)

VPP Signal TPOL with Red Lead on Scan0.67V with Black Lead on Scan

P102

FG5V TP (P106 pins 2 and 3)OL with Red Lead on Scan0.53V with Black Lead on Scan

Any Output Buffer TPOL with Red Lead on Scan

Y-Scan

VPPTP

P106


OL with Red Lead on Scan0.80V with Black Lead on Scan

TP

Y-Drive Buffer TroubleshootingYou can Check for a shorted Buffer output using this check.

6 Ribbon cables communicating with the Panel’s (Horizontal

Using the “Diode Test” on the DVM, check

FRONT SIDEBACK SIDEAny connector going to the Panel.

6 Ribbon cables communicating with the Panel s (Horizontal Electrodes) totaling 1080 lines determining the Panel’s Vertical resolution pixel count.

the pins for shorts or abnormal loads.

BUFFER IC (FGnd)

RED LEAD OnFloating Ground

BLACK LEAD On “ANY” Output Lug Reads 0.80V

White outline on Left

BLACK LEAD OnFloating Ground

RED LEAD On “ANY” Output Lug Reads Open

Any of these output lugs can be checked from

Indicated by white outline


floating ground. Look for shorts indicating a defective Buffer IC

Removing (Panel) Flexible Ribbon Cables from Y-Drive Upper or Lower

Flexible Ribbon Cables shown may be different, but process is the same.To remove the Ribbon Cable from the connector first carefully lift the Locking Tab fromthe back and tilt it forward ( lift from under the tab as shown in Fig 1). The locking tab must be standing straight up as shown in Fig 2.Lift up the entire Ribbon Cable gently to release the Tabs on each end. (See Fig 3)Gently slide the Ribbon Cable free from the connectorGently slide the Ribbon Cable free from the connector.

Gently PryUp Here

Be sure ribbon tab is releasedBy lifting the ribbon up slightly,

before removing ribbon.

Locking tab in upright position

Fig 1 Fig 3Fig 2


To reinstall the Ribbon Cable, carefully slide it back into the slot see ( Fig 3 ), be sure the Tab is seated securely and press the Locking Tab back to the locked position see ( Fig 2 then Fig 1).

The Ribbon Cable is clearly improperly seated

Incorrectly Seated Y-Drive Flexible Ribbon Cables

The Ribbon Cable is clearly improperly seated into the connector. You can tell by observing the line of the connector compared to the FPC, they should be parallel. p

The Locking Tab will offer a greater resistance to closing in the case.

Note the cable is crooked. In this case the Tab on the Ribbon cable was improperly seated at the t Thi b li i t itt t litop. This can cause bars, lines, intermittent lines abnormalities in the picture.

Remove the ribbon cable and re seat it correctlyRemove the ribbon cable and re-seat it correctly.


P101 Y-Drive to Y-SUS P213 (Floating Ground)

P101 P213

All pins are Floating Ground.

Y-DriveBoard

Y-SUSBoard


P102 "Y-Drive" to P212 "Y-SUS" Pin Label Run Diode Check Diode Check

P102 Y-Drive to Y-SUS P212 (Floating Ground 5V)

Y Drive Y SUSPin Label Run Diode Check Diode Check12~3 FGnd FGnd FGnd FGnd1~2 FG5V 5.06V OL 0.53V

Black Lead Red Lead

Y-DriveBoard

Y-SUSBoard

Floating Gnd Floating Gnd

Pins 1~10 Floating Ground

Note: Pin 1 is at the bottom. P211

FG5V (4.9V) measured from Pins 1 or 2 to Floating Gnd.

For Floating Ground, use any pin on P101. P102

g , y pP102Floating

Ground 5V TP


P106 Y-Drive to Y-SUS P211 Y-Drive Logic Signals ExplainedThe purpose of the Logic Signals sent to the Y-Drive board are to address a specific gate out of the 8 Gate arrays (Buffers) to allow the output of the Y-Drive signal. The Panel is scanned from the Top (Gate

Pin LabelPins 7~11

P211 Connector

y ( ) p g p (1) to the Bottom (Gate 1080) every frame.

Pin Label

11~12 VSC (Y-Scan)

9~10 VPP

8 n/c8 n/c7 SUS_DN (FG)

6 CLK

5 STB

(4mSec per/div)

These signals look very similar

P211

4 OC1

3 DATA

2 OC2

These signals look very similar due to the fact they are read from Chassis Gnd,

but they are actually Floating Ground related.DO NOT hook scope Gnd to Floating Gnd TP

without an Isolation Transformer.

1 SUS_DN (FG)All logic pins about (420V p/p)

Pins 1~7 are Logic (Drive) Signals to the Y-Drive Upper.Y-DriveBoard

Y-SUSBoardP106


g ( ) g

P106 P211

P106 Y-Drive to Y-SUS P211 Connector Diode Mode Testing

Measurements taken from Floating Gnd.For Floating Ground use any pin on P101.

P106 "Y-Drive" to P211 "Y-SUS" Pin Label Run Diode Check

11~12 VSC (Y-Scan) 146 2V OL11 12 VSC (Y Scan) 146.2V OL9~10 VPP 145V OL

8 n/c n/c OL

7 SUS DN (FG) FG FG_ ( )6 CLK 0.92V OL5 STB 2.24V OL4 OC1 2.26V OL3 DATA 0V OL

Y-Drive Y-SUS

3 0 O2 OC2 2.8V 1.52V1 SUS_DN (FG) FG FG

Black Lead on FG (Floating Gnd)Y DriveBoard

Y SUSBoard

Y-SUS Board should be DISCONNECTEDf th Di d M d t t

Diode Mode Readings taken with all connectors Disconnected.

DVM in Diode Mode


for the Diode Mode test.DVM in Diode Mode.

Y-Drive FG5V Fuse Information

P102

Location FL1(FG5V)

2A/125V

FG1 Protects the Floating Ground 5V line (created by IC508 and T502 on the Y SUS board) FG5V is used on the Y Drive by all

/ 5

T502 on the Y-SUS board). FG5V is used on the Y-Drive by all the Y-Drive Gate Arrays (Buffers).

Diode Check with Board Disconnected.0 53V Red Lead on Floating Gnd

Diode Check with Board Connected.1 33V Black lead on Floating Ground


0.53V Red Lead on Floating GndOL Black Lead on Floating Gnd

1.33V Black lead on Floating Ground.

CONTROL BOARD SECTIONThis Section of the Presentation will cover troubleshooting the Control Board Assembly. Upon completion of this section the Technician will have a better understanding of the circuit and be able to locate voltage and diode mode test points needed for troubleshooting

• DC Voltage and Waveform Test Points• Diode Mode Test Points

SIGNALS

able to locate voltage and diode mode test points needed for troubleshooting.

SIGNALSMain Board Supplied Panel Control and LVDS (Video) Signals

Control Board Generated Y-SUS and Z-SUS Drive Signals (Sustain)X B d D i Si l (RGB Add )

+5V (M5V) Developed on the SMPS

OPERATING VOLTAGES

X Board Drive Signals (RGB Address)

From the Y-SUS Supplied+18V (Routed through the Control board to the

Z-SUS)(Not used by the Control Board)

Developed on the Control Board +1.0V (IC703) for internal usep 1.0V (IC703) for internal use

+1.8V (IC701) for internal use

+3.3V (IC53) for internal use and for the X-Boards (TCPs)


Control Board Pictorial p/n: EBR71200701

P2To Z-SUS13~15 11~12

P105

P218V

IC701

M5V

IC703IC101P105D101 Shouldbe blinking

P106LVDSVS_DA

F E t l T i

1~3 (18V)4~7 (M5V)

IC703IC101DDR

IC22

Pattern GeneratorFor Panel Test

P106For External Trigger

IC702 IC53

IC22SerialFlash

From IC533.3V

IC53

n/c (For ROM Updates)P107 P108P22To X-RightTo X-Left



X125 MHz

IC702MCM

IC101

IC701

IC22SerialFlash

D1

IC703L1

P105

P107 P108 P22 n/c

Auto Gen

VS_DA

P2

P106

IC53

IC11


n/c Upgrades


4.94V

1.05V

1.06V

1.05V

3.3V 1.8V

1.8V On

3.31V

3.27V

42PW350 Control Board Layout Drawing


TESTING THE CONTROL BOARD:Disconnect all connectors. Jump STBY 5V from SMPS P813 Pin 13 to pin 3 (top leg) of IC701Apply AC and turn on the Set. Observe Control board LED D1, if it’s blinking, most likely Control board is OK.

NO VIDEO or ABNORMAL VIDEO:* If the complaint is no video running the Panel Test causes video to appear or appear normal, suspect the Main board or LVDS cable.Note: LVDS Cable must be removed for Auto Gen to work.

3.3V and X-Drive Right RGB Signals

Ribbon CableY-SUS and Y Drive Signals

To Y-SUS

With the unit on, if D1 is not on, check 5V supply. Note: In this set M5V is routed from the SMPS (P811 pin 6) to the Z-SUS (P205), from the Z-SUS to the Y-SUS, from the Y-SUS to the Control board, from Control to Z-

SUS, Pins 4~7 of P101. If present replace the Control Board. If missing, see (To Test Control Board)

LVDS Videofrom Main

Z-Drive Creation SignalsM5V and 18V to Z-SUS

PANEL TEST: Disconnect P106 andRemove LVDS Cable. Short across Auto Gen TPs to generate a test pattern when A/C power is applied.

IC53 Diode Check Pin 2 (3.3V)All Connectors Connected0.52V Red Lead0.31V Blk LeadAll Connectors Removed0.66V Red Lead0.36V Blk Lead

18V generated by D506 on Y-SUS

1~3 (18V)4-7 (M5V)

IC701 (1.8V Regulator)(1) Gnd(2) 1.8V(3) 3.31V

3.3V and X-Drive Left RGB Signals

IC53 (3.3V Regulator)(1) 4.94V(2) 3.32V(3) Gnd

28~30 (18V)24-27 (M5V)

IC11(1) Gnd(2) 0V(3) 3.31V

X1Top: 1.6VBottom: 1.7V

IC22(1) 3.25V(2) 0V(3) 3.27V(4) 0V

(5) 3.28V(6) 0V(7) 3.27V(8) 3.31V

12

32

12

32

1 2

3

(1) 4.94V(2) 0V(3) Gnd(4) Gnd(5) Gnd(6) 0.83V(7) 0.61V(8) 0.52V

( 9) 1.92V(10) 1.06V(11) 1.06V(12) 1.06V(13) 6.1V(14) 4.96V(15) 3.31V(16) 5V

IC703 (1.0V Core Regulator)

DDRMemory

3D-SyncPin 50

3.48V p/p 60 Hz

Control Board Temperature Sensor Location (Chocolate)Note: The temperature circuit not only protects the panel from

overheating, but it also is responsible for manipulating the Y-Drive waveform as the panel changes temperature

Make sure the Chocolate(Heat Transfer Material) remains in place

waveform as the panel changes temperature.

Chocolate(Heat Transfer Material)Behind Control Board

(Heat Transfer Material) remains in place if the board is removed.

It makes contact with the Panel and IC103 (Temperature Sensor)

IC103

Pin 1

CONTROL BOARD TEMPERATURESENSOR LOCATION

BACK SIDE OF THE BOARD03) Gnd02) Gnd01) 3.3V

04) 3.3V05) Gnd06) 3.3V

IC103

Pin 1


))

VS_DA Test Point on the Control Board

This signal can also be used to help lock

the scope when observing the LVDS

Note, this TP (VS DA) can be

gvideo signals.

(VS_DA) can be used as an External

Trigger for scope when locking onto

the Y-Drive (Scan) or the Z-Drive signal.


Check the output of the Oscillator (Crystal) X1. The frequency of the sine wave is 25 MHZ.Mi i thi l k i l ill h lt ti f th l

X1 Checking the Crystal “Clock” on the Control Board

Osc. Check: 25Mhz Top Leg

Missing this clock signal will halt operation of the panel drive signals. X1

1.61V

CONTROLBOARD CRYSTAL

LOCATION

Osc. Check: 25Mhz Bottom Leg1.69V


The Control Board supplies Video Signals to the TCP (Tape Carrier Package) ICs.

Control Board Signal (Simplified Block Diagram)

If there is a bar defect on the screen, it could be a Control Board problem.

Basic Diagram of Control BoardControl Board to X Board

This Picture shows Signal Flow Distribution to help determine the failure depending on where the it shows on the screen.

MCM

Basic Diagram of Control Board Address Signal Flow

IC702

CONTROL BOARDMCM

IC101SerialFlash

16 bit words

Resistor Array

2 Buffer

X-DRIVE BOARD

PANEL

There are 12 total TCPs.

IC702MCM

256 Lines output Total

2 Buffer Outputs per TCP

128 Lines per Buffer

There are 12 total TCPs.

43072 Vertical Electrodes

43072 (RGB) / 3 =

1024 Total Pixels (H)

To LeftX-Board

To RightX-Board

To 6 TCPs To 6 TCPs


P105 Control Board Connector to Y-SUS P101 Voltages and Diode Mode ChecksThese pins are very close together. Use Caution when taking Voltage measurements.

Pin P105 Label Silk ScreenPins 1 through 3

Receive 18V from the Y-SUS.Developed by D506

Note: 18V is labeled 15V on silk screen.

Pins 4 through 7 Receive M5V from the Y-SUS.Protected on Z-SUS by FS3

All the rest are deliveringY-SUS Waveform development and Y Drive logic signals to the Y SUSY-Drive logic signals to the Y-SUS Board (Y-Drive logic signals are simply routed right through the Y-SUS to the Y-Drive boards).

Note: The +18V is not used by the Control board, it is routed to the Z-SUS leaving on P2 Pins 13~15.


The M5V also leaves on P2 Pins 11~12.

P105 Control to Y-SUS P101 Plug InformationNote: There are no voltages in Stand-By mode

Pin TIP: The ribbon cable between the Control board and the Y-SUS does not comeith ith f th b dwith either of the new boards.

P105 "Control" to P101 "Y-SUS"

Pin Label Run Diode Check Pin Label Run Diode Check

1~3 +15V 18.2V OL 20 STB 1.5V OL

4~7 +5V 4.94V 1.15V 21 RAMP_BLK 1.07V OL

8~11 Gnd Gnd Gnd 22 CLK 0.6V OL

P105

12 Dumy2 2.14V OL 23 SUS_DN 2.71V OL

13 Y-OE 0.03V OL 24 DUMMY_3 2.14V OL

14 PC 1.84V OL 25 DUMMY_1 1.07V OL

15 ER_DN 0.5V OL 26 DUMMY_4 1.35V OL

16 DATA_PRE 0.01V OL 27 SUS_UP_0 0.75V OL

17 ER_UP 0.3V OL 28 CTRL_OE 0.11V OL

18 SC A 1 45V OL 29 RAMP DN 2 17V OL18 SC_A 1.45V OL 29 RAMP_DN 2.17V OL

19 RAMP_UP 0.22V OL 30 Gnd Gnd Gnd


Diode Mode Readings taken with all connectors Disconnected. Black lead on Gnd. DVM in Diode Mode.

LVDS Cable P106 on Control board shown.Flip the locking tab upward to release.

P106 Control Board LVDS Signals

Pins are close together, use caution.

Video Signals from the Main Board to the Control Board are referred to as Low Voltage Differential Signals or LVDS. The video is delivered in 20 bit LVDS format. Their presence can be confirmed

ith th O ill b it i th LVDS i l ith SMPTE

P106LVDS

with the Oscilloscope by monitoring the LVDS signals with SMPTE Color Bar input. Loss of these Signals would confirm the failure is on the Main Board or the LVDS Cable itself.

Example of LVDS Video SignalPin 41 5mSec per/div 100mV p/p Pin 40 5mSec per/div 100mV p/p

Pin 41 2mSec per/div 100mV p/p Pin 40 2mSec per/div 100mV p/pExample of Normal Signals measured at 1V p/p at 10µSec

Pins 12~17 22~25 28~33 38~41 are LVDS Video Signals


Pins 12 17, 22 25, 28 33, 38 41 are LVDS Video Signals.Pins 19~20 and 35~36 are clock signals for the data.

P106 Control Board LVDS Connector Voltages and Diode CheckP106 LVDS "Control" to P1401 "Main"Pin Label Run Diode Check Pin Label Run Diode Check51 Gnd Gnd Gnd 26 Gnd Gnd Gnd51 Gnd Gnd Gnd 26 Gnd Gnd Gnd50 VS_3D *0V OL 25 RE1+ 1.11V 1.31V49 UART_TXD 3.31V OL 24 RE1- 1.19V 1.31V48 UART_RXD 3.3V OL 23 RD1+ 1.11V 1.31V47 n/c n/c OL 22 RD1- 1.19V 1.31V46 n/c n/c OL 21 Gnd Gnd Gnd45 G d G d G d 20 RCLK1 1 16V 1 31V45 Gnd Gnd Gnd 20 RCLK1+ 1.16V 1.31V44 Gnd Gnd Gnd 19 RCLK1- 1.13V 1.31V43 Gnd Gnd Gnd 18 Gnd Gnd Gnd42 Gnd Gnd Gnd 17 RC1+ 1.11V 1.31V41 RE3+ 1.11V 1.31V 16 RC1- 1.19V 1.31V40 RE3- 1.19V 1.31V 15 RB1+ 1.11V 1.31V39 RD3+ 1.11V 1.31V 14 RB1- 1.19V 1.31V38 RD3- 1.19V 1.31V 13 RA1+ 1.11V 1.31V37 Gnd Gnd Gnd 12 RA1- 1.19V 1.31V36 RCLK3+ 1.16V 1.31V 11 Gnd Gnd Gnd35 RCLK3- 1.13V 1.31V 10 n/c n/c OL34 Gnd Gnd Gnd 9 n/c n/c OL

1

34 Gnd Gnd Gnd 9 n/c n/c OL33 RC3+ 1.11V 1.31V 8 n/c n/c OL32 RC3- 1.19V 1.31V 7 n/c n/c OL31 RB3+ 1.11V 1.31V 6 SDA 3.3V OL30 RB3- 1.19V 1.31V 5 *DISP_EN 3.05V OL29 RA3+ 1.11V 1.31V 4 SCL 3.3V OL

Bold Pins indicate 20 bit differential video signal

Pin 5 is the reason the LVDS cable must be removed to use the EX_AUTO_GEN shorting pins to create multiple internal generated test patterns (Panel Test).

Pin 5: Enables the Control Board

28 RA3- 1.19V 1.31V 3 PC_SER_DATA 3.31V OL27 Gnd Gnd Gnd 2 PC_SER_CLK 3.31V OL

1 Gnd Gnd Gnd


Note: There are no voltages in Stand-By mode.

Bold Pins indicate 20 bit differential video signal

Presenter

Presentation Notes

The reason for the comment in the first paragraph “And most likely the Control board is OK too.” is because we have seen a case where the picture was abnormal, but when the Auto Gen was started, the picture was normal. But the problem was the Control Board.

P2 Control Board Connector Pin ID and VoltagesVoltage and Diode Mode Measurements for the Control Board.Note: There are no voltages in Stand-By mode.

P2 "Control" to P201 "Z-SUS Board"Pin Label Run Diode Check1 Gnd Gnd Gnd

1

P2 Label

18V 5V

1 Gnd Gnd Gnd2 SUS_UP 0.22V OL3 Gnd Gnd Gnd4 SUS_DN 0.79V OL

Label5 n/c n/c OL6 ZBIAS 1.92V OL7 Gnd Gnd Gnd8 Vzbias-con 3.25V OL9 CTRL_EN Gnd OL

10 Y-OE 0.05V OL11~12 M5V 5.06V 1.15V13~15 (+15V) 18 2V OL13~15 (+15V) 18.2V OL



P107 Connector "Control Board” to “Left X Board” P23241~433.3V

P107 "Control" to P232 "X-Left"


1Pin Label Run Diode Check Pin Label Run Diode Check

1 Gnd Gnd Gnd 27 n/c n/c OL

2 PDDS_A2_P11 1.11V 1.34V 28 PDDS_A2_P15 1.11V 1.34V

3 PDDS_A2_N11 1.32V 1.32V 29 PDDS_A2_N15 1.32V 1.32V


5 PDDS A1 N11 1.32V 1.32V 31 PDDS A1 N15 1.32V 1.32V

White hash k t


6 n/c n/c OL 32 n/c n/c OL

7 PDDS_CLK_P5 1.09V 1.34V 33 PDDS_CLK_P8 1.09V 1.34V

8 PDDS_CLK_N5 1.35V 1.32V 34 PDDS_CLK_N8 1.35V 1.32V

9 n/c OL 35 n/c n/c OL

10 PDDS A2 P12 1.11V 1.34V 36 PDDS A2 P16 1.11V 1.34V marks countas 5

_ _ _ _





15 PDDS_A2_P13 1.11V 1.34V 41 +3.3V 3.32V 0.66V_ _

16 PDDS_A2_N13 1.32V 1.32V 42 +3.3V 3.32V 0.66V

17 PDDS_A1_P13 1.11V 1.34V 43 +3.3V 3.32V 0.66V

18 PDDS_A1_N13 1.32V 1.32V 44 n/c n/c OL

19 n/c n/c OL 45 STB (0) 3.25V OL

20 PDDS_CLK_P7 1.09V 1.34V 46 STB (1) 3.25V OL

21 PDDS_CLK_N7 1.35V 1.32V 47 BLK (0) 1.76V OL

22 n/c n/c OL 48 POL (0) 1.89V OL

23 PDDS_A2_P14 1.11V 1.34V 49 X_ER_DN(0) 0.28V OL

24 PDDS_A2_N14 1.32V 1.32V 50 X_SUS_DN(0) 0.28V OL

25 PDDS_A1_P14 1.11V 1.34V


26 PDDS_A1_N14 1.32V 1.32V

Presenter

Presentation Notes


P108 Connector "Control Board” to “Left X Board” P331

8~103 3V

P108 "Control" to P331 "X-Right"


13.3V

1 X_ER_DN(1) 0.28V OL 27 PDDS_A2_N19 1.32V 1.32V

2 X_SUS_DN(1) 0.28V OL 28 PDDS_A2_P19 1.11V 1.34V

3 POL (0) 1.89V OL 29 n/c n/c OL

4 BLK (0) 1.76V OL 30 PDDS_CLK_N10 1.35V 1.32V

5 STB (2) 3.25V OL 31 PDDS_CLK_P10 1.09V 1.34V

White hash k t

6 STB (3) 3.25V OL 32 n/c n/c OL

7 n/c OL 33 PDDS_A1_N20 1.32V 1.32V

8 +3.3V 3.32V 0.66V 34 PDDS_A1_P20 1.11V 1.34V

9 +3.3V 3.32V 0.66V 35 PDDS_A2_N20 1.32V 1.32V

10 +3.3V 3.32V 0.66V 36 PDDS_A2_P20 1.11V 1.34Vmarks count

as 511 n/c n/c OL 37 n/c n/c OL













24 n/c n/c OL 50 Gnd Gnd Gnd

25 PDDS_A1_N19 1.32V 1.32V


26 PDDS_A1_P19 1.11V 1.34V

Presenter

Presentation Notes


X BOARD (LEFT and RIGHT) SECTION

The following section gives detailed information about the X boards. These boards deliver h C l i f i i l d l d h C l b d h TCP (T d C ithe Color information signal developed on the Control board to the TCPs, (Taped Carrier

Packages). The TCPs are attached to the vertical FPCs, (Flexible Printed Circuits) which are attached directly to the panel. The X boards are the attachment points for these FPCs.These boards have no adjustment.

X-BOARD VOLTAGES:• VA: Originally developed on the Switched Mode Power Supply VA (Voltage for

Address) sent out P811 pin 5 to Z-SUS P7 pin 5. VA is routed through the Z-SUS board and out on P4 pins 11~12 (top two pins) to the Z SUB board P101 VAboard and out on P4 pins 11~12 (top two pins) to the Z-SUB board P101. VA leaves the Z-SUB board on P203 pins 3~4 (bottom 2 pins). VA arrives on the Left X-Board via P312 pins 3~4. VA leaves the Left X-Board P311 pins 3~4 and is sent to the Right X-Board arriving on P211 pins 3~4.arriving on P211 pins 3 4.

• 3.3V: Control board develops 3.3V (IC53). 3.3V leaves on connector P107 pins 41~43 and routes to the Left X-Board via ribbon connector P232 pins 9~11.

• 3.3V: Control board develops 3.3V (IC53). 3.3V leaves on connector P108 pins 8~10 and routes to the Left X-Board via ribbon connector P331 pins 42~44.


X Board Additional Information

There are two X-Boards, the Left and the Right. As viewed from the rear of , gthe set.

The two X-Boards have very little circuitry. They are basically signal and voltage routing boards. g g

• They route Va voltage to all of the Taped Carrier Packages (TCPs). Va is introduced to the Left X board first, then the Left X-Board sends Va to the Right X-Board.g

• The X-Boards also route the Logic (Color) signals from the Control board to all of the Taped Carrier Packages (TCPs).

• The X Boards have connectors to 12 TCPs 6 on the left and right• The X-Boards have connectors to 12 TCPs, 6 on the left and right.

• There are a total of 12 TCPs and each TCP has 2 gate arrays, so there are a total of 24 buffers feeding the panel’s 5760 vertical electrodes which determine the Horizontal Resolution of the Paneldetermine the Horizontal Resolution of the Panel.


X Board TCP Heat Sink Warning

NEVER run the television with this heat sink removed

The Vertical Address buffers (TCPs) Taped Carrier Packages have one

NEVER run the television with this heat sink removed. Damage to the TCPs will occur and cause a defective panel.


heat sink indicated by the arrow. It protects all 12 TCPs.

P211, P232, P311 and P331 X Board Connector (VA and 3.3V)

Pins 3~4 Pins 3~4T f th L ft d Ri ht X D i B d

VAVA

3.3V 3.3V

Pins 9~11 Pins 42~44

Top of the Left and Right X-Drive Boards

P232 P331

P311P211 P311P211

This shows the routing for VA and for the 3.3V input to the X-Drive boards.

Using a regular diode check:Using a regular diode check:VA should be (OL)3.3V should be (0.53V)


X Board Layout Primary Circuit Diode CheckThe two X-Boards have similar circuit layouts for the connections going to the TCPs, as shown below.

3.3VEC

Gnd

Pins 33~34EC

Pins 47~48

ECPins 3~4 Logic

VAPins 6~7 VA

Pi 44 45

TCP

Pins 44~45

- On the below: + On the below:

All Connectors to Control and Z-SUB boards are disconnected from Left X board.All readings are in Diode Mode from Chassis Ground

On any Va (0.45V) TCPs connected.On EC (0.45V) TCPs connected.On 3.3V (0.37V) TCPs connected.On any Va (OL) TCPs disconnected.

On any Va (OL) TCPs connected.On EC (OL) TCPs connected.On 3.3V (1.22V) TCPs connected.On any Va (OL) TCPs disconnected.


On EC (OL) TCPs disconnected.On 3.3V (OL) TCPs disconnected.

On EC (OL) TCPs disconnected.On 3.3V (OL) TCPs disconnected.

TCP 3.3V B+ Check Warning: DO NOT attempt to run the set with the Heat Sink over the TCPs removed.

Checking IC53 for 3 3V use center pin or Case of component

For Connectors P107 and P108 on the Control board,

C t l b d ti Checking IC53 for 3.3V, use center pin or Case of component.see Control board section.

With all connectors connected, place the Red Lead On 3.3V = Diode Check (0.53V)Black Lead On 3.3V = Diode Check (0.32V) 5.0V3.3V for TCPs

IC121 on 3.3V

3.3V in on Pins 1 ~ 5 only on P232 connector from the Control board

Control BoardWith all connectors removed, place the Red Lead On 3.3V = Diode Check (0.66V)Black Lead On 3.3V = Diode Check (0.36V)

Gnd

Control BoardP161 and P162

3.3V3.3V

All Connectors to All TCPs look very similar for the 3.3V test point. The

DC

Continuity

3.3V

picture shows the trace at pins 33 and 34 for each connector. There is a small feed trough and a Cap, you can use for Test Points.Example here from P305. You can only check for continuity back to IC231 you


check for continuity back to IC231, you can not run the set with heat sink removed.

TCP (Tape Carrier Package)This shows the layout of the bottom ribbon cables connecting to the Panel’s Vertical electrodes, (Address Bus). Note that each ribbon cable has a solid state device called a TCP attached.

Front

Y-SUB BoardVaX Drive Board

Fram

e

X_B/D

t panel HorizoRear pane

Control BoardLogic

3.3VConnector

e

ontal Ad

dress

el Vertical A

dd

TCPTaped Carrier 128 lines 128 lines

256 total lines

ChocolateLock

dress

Package256 VerticalElectrodes

TCPAttached directly to Flexible cable

Long BlackHeat Sink


Back side of TCP Ribbon

TCP Connector Pin DescriptionAny X Board to Any TCP P201~P206 or P301~P3063.3V ORIGINATION

From Control board IC53 center leg.Leaves P107 to P232 and P108 to P331

VA: ORIGINATIONFrom Z-SUB P203 In Right X P312 3~4

Va: ROUTING:

TCP Testing

Leaves P107 to P232 and P108 to P331Arrives on X board Left P232 Pins 9~11

Arrives on X board Right P331 Pins 42~44

Va: ROUTING:Leaves Right X P311 pins 3~4To Left X : P211 pins 3~4

Fl ibl P i t d Ribb C bl t TCP IC

Look for any TCPs being discolored.Ribbon Damage. Cracks, folds Pinches, scratches, etc…

DIODE CHECKTCP DISCONNECTED

Must be checked on FPC

Flexible Printed Ribbon Cable to TCP IC

Red Lead on TCP VA OL

DIODE CHECKALL TCPs INSTALLED

Red Lead on TCP VA OLBlack Lead on TCP VA 0 47V

Va Gnd

EC 3.3VGnd

Gnd

Gnd

ECVaBlack Lead on TCP VA 0.5V

Red Lead on TCP 3.3V OLBlack Lead on TCP 3.3V 0.53V

EC OL either way

Black Lead on TCP VA 0.47V

Red Lead on TCP 3.3V 0.53VBlack Lead on TCP 3.3V 0.32V

EC (OL) either wayGndLogic


5 10 15 25 30 35 40 45 501 20

EC OL either way

TCP Visual Observation. Damaged TCP

Warning: DO NOT attempt to run the set with the Heat Sink over the TCPs removed

This damaged TCP can, (at the location of the TCP).a) Cause the Power Supply to shutdown. (VA shorted, 3.3V shorted).

Warning: DO NOT attempt to run the set with the Heat Sink over the TCPs removed. After a very short time, these ICs will begin to self destruct due to overheating.

a) Cause the Power Supply to shutdown. (VA shorted, 3.3V shorted).b) Generate abnormal vertical bars, (colored noise).c) Cause the entire area driven by the TCP to be “All White” or “ALL BLACK”.d) Cause a “Single Pixel Width Line” defect. The line can be Red, Green or Blue.e) A dirty contact at the connector can cause b, c and d also.

“TCP”Tapped Carrier

Package

Look for burns, pin holes, damage, etc.


P211 Left X Drive Connector from Right X Drive P311 Information

Voltage and Diode Mode Measurement (No Stand-By Voltages)


P211 "X Drive Left" to “X Drive Right" P311

1 Gnd Gnd Gnd

2 Gnd Gnd Gnd

1P211

3 VA *55V Open

4 VA *55V Open

* Note: This voltage will vary in accordance with Panel Label.There are no Stand-By voltages on this connector.



P232 Left X Drive Connector from Control Board P107 Information

(No Stand-By Voltages)P232 "X-Left" to P107 "Control" Note: All connector removed except TCPsPin Label Run Diode Check Pin Label Run Diode Check1 X_SUS_DN(0) 0.28V 1.87V 27 PDDS_A2_N14 1.32V 1.8V

2 X_ER_DN(0) 0.28V 1.87V 28 PDDS_A2_P14 1.11V 1.8V

3 POL (0) 1.89V 1.85V 29 Gnd Gnd Gnd

4 BLK (0) 1.76V 1.84V 30 PDDS_CLK_N7 1.35V 1.8V

5 STB (1) 3.25V 1.87V 31 PDDS_CLK_P7 1.09V 1.8V

P2326 STB (0) 3.25V 1.87V 32 Gnd Gnd Gnd

7 Gnd Gnd Gnd 33 PDDS_A1_N13 1.32V 1.8V

8 +3.3V 3.32V 1.23V 34 PDDS_A1_P13 1.11V 1.8V

9 +3.3V 3.32V 1.23V 35 PDDS_A2_N13 1.32V 1.8V

10 +3.3V 3.32V 1.23V 36 PDDS_A2_P13 1.11V 1.8V

1

11 Gnd Gnd Gnd 37 Gnd Gnd Gnd














25 PDDS_A1_N14 1.32V 1.8V


Diode Mode Readings taken with all connectors Disconnected except TCPs. Black lead on Gnd. DVM in Diode Mode.

26 PDDS_A1_P14 1.11V 1.8V

P311 Right X Drive Connector from Left X Drive P211 Information



P311 "X Drive Right" to “X Drive Left" P211

1 Gnd Gnd Gnd

2 Gnd Gnd Gnd

P311

3 VA *55V Open

4 VA *55V Open

1




P312 Right X Drive Connector from Z-SUB P203 Information



P312 "X Drive Right" to “Z-SUB Left" P203

1 Gnd Gnd Gnd

2 Gnd Gnd Gnd

P312

3 VA *55V Open

4 VA *55V Open

1




P331 Right X Drive Connector from Control Board P108 Information

(No Stand-By Voltages)P331 "X-Right" to "Control" P108 Note: All connector removed except TCPsPin Label Run Diode Check Pin Label Run Diode Check1 Gnd Gnd Gnd 27 n/c n/c OL





P3316 Gnd Gnd Gnd 32 Gnd Gnd Gnd





1





15 PDDS_A2_P20 1.11V 1.8V 41 +3.3V 3.32V 1.23V

16 PDDS_A2_N20 1.32V 1.8V 42 +3.3V 3.32V 1.23V

17 PDDS_A1_P20 1.11V 1.8V 43 +3.3V 3.32V 1.23V

18 PDDS_A1_N20 1.32V 1.8V 44 Gnd Gnd Gnd

19 Gnd Gnd Gnd 45 STB (3) 3.25V 1.87V

20 PDDS_CLK_P10 1.09V 1.8V 46 STB (2) 3.25V 1.87V

21 PDDS_CLK_N10 1.35V 1.8V 47 BLK (0) 1.76V 1.85V

22 Gnd Gnd Gnd 48 POL (0) 1.89V 1.84V

23 PDDS_A2_P19 1.11V 1.8V 49 X_SUS_DN(1) 0.28V 1.87V

24 PDDS_A2_N19 1.32V 1.8V 50 X_ER_DN(1) 0.28V 1.87V

25 PDDS_A1_P19 1.11V 1.8V


Diode Mode Readings taken with all connectors Disconnected except TCPs. Black lead on Gnd. DVM in Diode Mode.

26 PDDS_A1_N19 1.32V 1.8V

MAIN BOARD SECTIONThe following section gives detailed information about the Main board. This board contains the Microprocessor, Audio section, video section and all input, outputs. It also receives all input signals andMicroprocessor, Audio section, video section and all input, outputs. It also receives all input signals and processes them to be delivered to the Control board via the LVDS cable. The main tuner (Silicon Tuner using discreet components) which provides VSB (NTSC), 8VSB (Over the Air Digital Broadcast) and QAM (Cable Digital) is located on the main board. This board is also where the television’s software upgrades are accomplished through the USB input.This board has no mechanical adjustmentsThis board has no mechanical adjustments.

The Main Board Receives its operational voltage from the SMPS:

STBY 5V

DURING STAND-BY: From SMPS DURING RUN From SMPS : (STBY 5V remains):

• STBY 5V • +5V for Video processing

• 17V for Audio

OUTPUTS:

• Sends power supply turn on commands to the SMPS.• Distributes Key 1 and Key 2 to the Front IR/Key Pad Board.• Receives Intelligent Sensor data from the Front IR/Key Pad Board (via SCL/SDA). • Controls the front Power LEDs. • Distributes +3 3V ST to the Front IR Board• Distributes +3.3V_ST to the Front IR Board.• Routes 20 bit LVDS video and Panel Turn On signals to the Control Board.• Processes and Outputs all audio signals and sends them to the Invisible Speakers• Routes Optical Audio Out.• Receives and Transmits to the Motion Remote via RF.• Transmits 3D Sync to the 3D Shutter Glasses


• Transmits 3D Sync to the 3D Shutter Glasses.

Main Board Layout and Identification

P501 to SMPS

P1401LVDS

IC14003D Formatter

IC101 Microprocessor

LVDS

P902t Ft IR Microprocessor

Video Processor

USB

to Ft IR

P1404Motion

HDMI

HDMI

PC

OpticalAudio RGB

Remote / 3D Transmitter

P700Audio

Remote

RF

PCAudio

Composite


Rear Inputs

RFInRS232

pA/V

IC101Micro/Video

Processor

P1401

IC1400

P902

12

32

P1404 12

3

2

IC1401

IC700

P700

12

32

IC1406

IC506

IC504

IC1407

IC1202

1 2 3

123

IC600

IC507

IC1404

L1402

IC502

L503

D

G

SQ501

L506IC1201A2 A1

C

D200

IC103

L502

Q1401D

GS

D

GS

Q1402

X1400

C

BE

Q1400

P501

X200

24MhzL700L701

L702

L703

R-R+L-L+

D501

IC501

TUNER


Other Main Boards p/n: EBR72942901 AUSLLHR

p/n: EBR71638619Interchangeable

Q901

C

B E

24Mhz


8. NC 7. SDA 6. SCL 5. NC 4. NC 3. 5V

2. NC 1. NC

TU1300

C

A1 A2

IC1402

D805

IC1101

IC804

CBEQ807

Q1304

C

B E

C

B E

Q1305IC901

IC900

IC801C

B E

Q805

C

A1A2D803

IC802

CB

ECA1

A2D804 Q103

C BE Q8061

D801C

A1

A2

IC104

IC102

IC109

123

IC505

CB

EQ500

3

12

IC500

Q800

CB

EQ900

NANDFLASH

42PW350 Main (Front and Back) Layout Drawing


P501 "Main" to P813 "SMPS"Pin Label STBY Run Diode Check1_2 a 17V 0V 17V Open3-4 Gnd Gnd Gnd Gnd5-7 a 5.1V 0.46V 5.17V 1.18V8 a c Error_Det 3.44V 4.02V 1.73V

9-12 Gnd Gnd Gnd Gnd13-14 STBY_5V 3.47V 5.14V 1.07V

15 a RL_ON 0V 3.28V 1.78V16 a d AC Det 0V 4.06V 1.04V17 b M_ON 0V 3.28V 1.79V18 e Auto_Gnd Gnd Gnd Gnd

P902 "MAIN" to "Front IR"Pin Label STBY Run Diode Check1 IR 2.84V 2.7V 2.63V2 Gnd Gnd Gnd Gnd3 Key1 3.3V 3.3V 1.77V4 Key2 3.3V 3.3V 1.77V5 LED_RED 3.25V 0V 1.72V6 Gnd Gnd Gnd Gnd7 EYE_SCL 3.3V 3.3V 1.72V8 EYE_SDA 3.3V 3.3V 1.72V9 Gnd Gnd Gnd Gnd10 3.3VST 3.3V 3.3V 0.85V11 n/c n/c n/c n/c12 n/c n/c n/c n/c13 Touch_Ver_Check 0.19V 0V 1.69V14 n/c n/c n/c Open15 n/c n/c n/c Open

P1404 "MAIN Board" To "Motion Remote Sensor"

Pin Label STBY Run Diode Check

1 3.3V_Normal 0V 3.29V 0.49V

2 Gnd Gnd Gnd Gnd

3 3D_RF_RX 0V 3.29V 1.18V

4 3D_RF_TX 0V 3.29V 1.17V

5 3D_RFModule_Reset 0V 3.1V 2.37V

6 3D_RFModule_DC 0V 0.1V 1.32V

7 3D_RFModule_DD 0V 0.1V 1.34V

8 Gnd Gnd Gnd Gnd

9 3D_RF_GPIO_0 0V 0V 1.26V

10 3D_RF_GPIO_1 0V 0V/3.18V 1.26V

11 3D_RF_GPIO_2 0V 0V 1.26V

*12 3D_L/R_Sync 0V 0V/1.59V Open

*No 3D / With 3D

Note: Pin 12 with 3D Sync 3.48V p/p 60 Hz square wave.

3.3V_ST5V_ST in (3)

+1.5V_DDR_IN+5V_ST_EN In in

Serial Flash

DDR

Audio AmpEDID

EDID

RS232

EDID

DDR

DDR

3D Formatter

+1.8V+3.3V_3D_A In (3)

Serial Flash

+1.0V+5V in

+3.3V Reg

+5V in (3)

HDCP EEPROMEEPROM

+1.26V_VDDC) Reg +5V_ST_EN In +5V_ST_EN Switch

+5V_ST In

+3.3V+5V in

+2.5V_AVDD+3.3V_AVDD

USB +5V OCP+5V in

+5V_TU17V in

+3.3V_AVDD+5V_ST_EN In

EDID+1.2V_DE+3.3V in (3)

Tuner SIF

Tuner CVBS

Hot Swap

B+ Routing

Q501 CTL

HDMI CEC Hot SwapEDID WP

RS232 TX Buffer

Hot Swap

+3.3V_3D Reg

SDA_3.3V_MODSCL_3.3V_MOD

LED_RedDriver

Serial Flash WP

IC101Micro/Video

Processor

P1401

IC1400

P902

12

32

P14041

23

2

IC1401

IC700

P700

12

32

IC1406

IC506

IC504

IC1407

IC1202

1 2 3

123

IC600

IC507

IC1404

L1402

IC502

L503

Q501

L506

IC1201

A2 A1

C

D200

IC103

Q901

L502

Q1401

DGS

DGS

Q1402

X1400

C

BE

Q1400

P501

X200

24MhzL700L701

L702

L703

R-R+L-L+

D501

IC501

TUNER


Other Main Boards p/n: EBR72942901

AUSLLHRp/n: EBR71638619

Interchangeable

C

B E

D

S

G

24Mhz

42PW350 Main (Front) Layout Drawing



8. NC 7. SDA 6. SCL 5. NC 4. NC 3. 5V

2. NC 1. NC

TU1300


Serial Flash

DDR

Audio Amp

DDR

DDR

3D Formatter

+1.8V+3.3V_3D_A In (3)

+1.0V+5V in

+3.3V_3D Reg+5V in (3)

+5V_ST_EN Switch+5V_ST In

+3.3V+5V in

USB +5V OCP+5V in

+5V_TU17V in


+1.2V_DE+3.3V in (3)

+1.26V_VDDC+5V_ST_EN In

+3.3V Reg


LED_RedDriver

Serial Flash WP

42PW350 Main Board Front Side Component Voltages

IC103 Serial IC502 +1.26V_VDDC IC507 +5V_TU IC1404 +1.0V Q501 +5V_ST_ENFlash Pin Regulator Pin Regulator Pin Regulator Pin Switch

Pin For HDMI [1] 5V (In) [1] 11.1V [1] 5V (In) [B] 0.7V[1] Gnd [2] 5V (In) [2] 17V [2] 0V [C] 5.2V[2] Gnd [3] 0V [3] 3.1V [3] 0V [E] 5.2V[3] Gnd [4] 0V [4] 1.8V [4] 0V[4] Gnd [5] 081V [5] 0.8V [5] 0V Q901 LED_RED[5] 3.29V [6] 0.81V [6] 0.6V [6] 0.8V Pin Driver[6] 3.29V [7] 0.72V [7] 0V [7] 0.65V [B] 0.71V[7] 3.29V [8] 0.53V [8] 5V [8] 0.54V [E] 0V[8] 3.29V [9] 1.7V [9] 1.7V [C] 0V

[10] 1.3V IC600 +1.2V_DE [10] 1.05VIC501 +1.5V_DDR_IN [11] 1.3V Pin Regulator [11] 1.05V Q1400 Write Protect

Pin Regulator [12] 1.3V [1] 3.3V (In) [12] 1.05V Pin for IC1402[1] 5V (In) [13] 6.47V [2] 1.26V (Out) [13] 6.1V [B] 0V[2] 5V (In) [14] 0.25V [3] Gnd [14] 0.15V [E] 0V[3] 0V [15] 2.96V [15] 2.9V [C] 3.18V[4] 0V [16] 5V (In) [16] 0V[5] 0V Q1401 SCL_3.3V_MOD[6] 0.81V IC504 +3.3V_AVDD D200 Reset IC1406 +3.3V_VST Pin Buffer[7] 0.72V Pin Regulator Pin Speed Up Pin +3.3V_3D [B] 3.28V[8] 0.53V [1] 0V [A1] 0V [1] 0V [C] 3.3V[9] 1.7V [2] 3.3V (Out) [C] 0V [2] 3.31V (Out) [E] 3.28V

[10] 1.58V [3] 5.2V (In) [A2] 0V [3] 5V (In)[11] 1.58V Q1402 SDA_3.3V_MOD[12] 1.58V IC506 +3.3V D501 Reg IC1407 (+1.8V) Pin Buffer[13] 6.7V Pin Regulator Pin IC507 Pin Regulator [B] 3.28V[14] 0.12V [1] 0V [A] 0V [1] 0V [C] 3.3V[15] 2.98V [2] 3.3V (Out) [C] 5V [2] 1.8V (Out) [E] 3.28V[16] 2.98V (In) [3] 5.2V (In) [3] 3.3V (In)



8. NC 7. SDA 6. SCL 5. NC 4. NC 3. 5V

2. NC 1. NC

Digital Video

Analog Video

C

A1A2

TU1300

IC1402

D805

IC1101

IC804

CB

EQ807

Q1304C

BE

C

BE

Q1305 IC901

IC900

IC801

C

BEQ805

C

A1 A2

D803IC802

CB

EC

A1

A2D804Q103 C

B

E

Q8061

D801C

A1

A2

IC102IC109

1 2 3

IC505

CB

E

Q5003

1 2

IC500

Q800




CB

E

Q900

IC104NANDFLASH

144

42PW350 Main Back Layout Drawing


3.3V_ST5V_ST in (3)

EDID

EDID

RS232EDID

Serial Flash

HDCP EEPROM

+3.3V+5V in

USB +5V OCP+5V in

EDID

EEPROM

Tuner SIF

Tuner CVBS

Hot Swap

B+ Routing

Q501 CTL

HDMI CECHot Swap

EDID WP

RS232 TX Buffer

Hot Swap

42PW350 Main Board Back Side Component Voltages

IC102 HDCP IC505 +2.5V_AVDD IC900 RS232 Tx/Rx IC1101 USB 5V Q800 HDMI CEC Q1305 TunerEEPROM Pin Regulator Pin Pin Limiter Pin Buffer Pin CVBS

Pin [1] 3.3V (In) [1] 3.3V [1] Gnd [1 B] 3.29V [B] 3.63V[1] Gnd [2] Gnd [2] 5.6V [2] 5.1V (In) [2 S] 3.29V [C] 0V[2] Gnd [3] 2.52V (Out) [3] 0V [3] 5.1V (In) [3 D] 3.23V [E] 4.3V[3] 3.3V [4] 0V [4] 3.3V [4 G] 3.3V[4] Gnd IC801 IC801, IC802 [5] (-5.6V) [5] 0V D801 Biasing[5] 3.3V EDID Data [6] (-5.6V) [6] 5.1V (Out) Q806 Hot Pin for Q800[6] 3.3V Pin For HDMI [7] 5.7V [7] 5.1V (Out) Pin Swap [A1] 3.28V[7] 3.3V [1] Gnd [8] 0V [8] n/c [B] 0V [C] 3.32V[8] 3.3V [2] Gnd [9] 3.3V [C] 0V [A2] 0V

[3] Gnd [10] 0V IC1402 Serial [E] 0VIC109 EEPROM [4] Gnd [11] 3.3V Pin Flash D803 5V

for Micro [5] 3.3V [12] 3.3V [1] 3.29V Q807 Hot Pin RoutingPin [6] 3.3V [13] 0V [2] 0V Pin Swap [A1] 0V[1] Gnd [7] 3.3V [14] (-5.6V) [3] 3.3V [B] 0.1V [C] 3.32V[2] Gnd [8] 3.3V [15] Gnd [4] 0V [C] 0V [A2] 3.28V[3] Gnd [16] 3.3V (B+) [5] 0V [E] 0V[ ] [ ] ( ) [ ] [ ][4] Gnd IC804 EDID Data [6] 0V D804 5V[5] 3.3V Side Input IC901 EDID Data [7] 3.29V Q900 Hot Pin Routing[6] 0V Pin For HDMI for PC [8] 3.29V Pin Swap [A1] 3.28V[7] 3.3V [1] Gnd Pin For HDMI [B] 0.63V [C] 3.32V[8] 3.3V [2] Gnd [1] Gnd Q103 EDID [C] 0V [A2] 0V

[3] Gnd [2] Gnd Pin WP [E] 0VIC500 3.3V_VST [4] Gnd [3] Gnd [B] 0V D805 5V

Pin Regulator [5] 3.3V [4] Gnd [C] 5V Q1304 Tuner Pin Routing[1] Gnd [6] 3.3V [5] 3.3V [E] 0V Pin SIF [A1] 5.1V[2] 3.3V (Out) [7] 3.3V [6] 3.3V [B] 0.23V [C] 4.9V[3] 5.09V (In) [8] 3.3V [7] 3.3V Q500 +5V_ST_EN [C] 0V [A2] 0V

[8] 3.3V Pin Switch CTL [E] 0.92V[B] 0.64V[C] 0V[E] 0V


Main Board Tuner Explained

TU1300

Pop the cover off to expose the Tuner Pins. Or flip the board over to access the back side of access to the pins.

C f

18. IF p17. IF n16. IF AGC15. Reset14 3 3V TU

Check for Digital signal 700mV p/p on pins 17 and 18.

Check for Tuner B+:+5V_TU Pin 3 (provided by IC507 pin 8)1.2V_DE Pin 13 (provided by IC600 pin 1)+3.3V Pin 14 (provided by IC506 pin 2)

14. 3.3V_TU13. 1.26V_TU12. GND11. CVBS10. NC

9. SIF

8. NC7. SDA6. SCL5. NC4. NC

Data only present during channel change on SDA/SCL. approx:. 4V p/p.

4. NC3. 5V_TU

2. NC1. NC

Front bottom right hand side


Front bottom right hand side

Main Board Crystal X200 and X1400 CheckX1400 25Mhz

X14001.51V 1.61V

X1400 Runs only when set is on.(3D Formatter IC1400 Crystal)

Right Side 4.73V p/pLeft Side 3.41V p/p

X200 R h li dX200 Runs when power applied.(Micro Crystal) X200 25MHZX1400

X200

1.67V 1.66VBottom Side 3.0V p/pTop Side 3.38V p/p

X200


MAIN Board Crystal Location

Bottom Side 3.0V p/pTop Side 3.38V p/p

Main Board Removing the LVDS Cable or Power Supply Connector

(1) Using your fingers and press in gently on the two locking tabs. ( ) g y g p g y gThen rock the connector out of the plug.

(2) Pull the Cable from the Connectorby rocking back and forth.

P501 Main or P813 SMPS

If the Connector Locks have been damaged and will not release, cut off tabs. Use a thin object and slide straight down j g

as indicated by the arrows below and release the locks.

CutCutOffOff


P501 Main Board Plug to Power Supply Voltages and Diode CheckPin front

P501 "Main" to P813 "SMPS"

P501

F t i dd


1_2 a17V 0V 17V Open

3-4 Gnd Gnd Gnd GndFront pins are oddBack pins are even

5-7 a5.1V 0.46V 5.17V 1.18V

8 a cError_Det 3.44V 4.02V 1.73V

9-12 Gnd Gnd Gnd Gnd

13-14 STBY_5V 3.47V 5.14V 1.07V

15 aRL_ON 0V 3.28V 1.78V

16 a dAC Det 0V 4.06V 1.04V

17 bM ON 0V 3 28V 1 79V

a Note: The RL_On turns on +5V, 17V Error Det. and AC_DET.b Note: The M5-On command turns on M5V Va and Vs

17 bM_ON 0V 3.28V 1.79V

18 eAuto_Gnd Gnd Gnd Gnd

b Note: The M5-On command turns on M5V, Va and Vs.c Note: The Error Det line is not used in this model.d Note: If the AC Det line is Missing, Audio will Mute.e Note: Pin 18 is grounded on the Main. If opened, the power supply turns on automatically.


Diode Mode Check with the Board Disconnected. DVM in the Diode mode.

Voltage and Diode Mode Measurements for the Main Board Speaker Plug

P700 Main Board Speaker Plug Voltage and Diode Check

P700 Connector "Main" to "Speakers"

Pin Label Run Diode Mode1 R- 0V~1.0V Open2 R+ 0V~1.0V Open

P700 Connector Main to Speakers

IC700Audio Amp

2 R 0V 1.0V Open3 L- 0V~1.0V Open4 L+ 0V~1.0V Open

Audio Right out pin 6 and 9.Audio Left out pin 10 and 13.

17V Audio Amp Power: Right pins 8. Left pins 11.3 3V Low Voltage Signal Processing: Pins 21 35 13.3V Low Voltage Signal Processing: Pins 21, 35.Audio Mute: Pins 23, control is AC_DET.

Rig

ht (-

)R

ight

(+)

Left

(-)Le

ft (+

)


P700Speaker ConnectorDiode Mode Check with the Board Disconnected. DVM in the Diode mode.

Voltage and Diode Mode Measurements for the Main Board

P902 Main Board Plug to IR Board1

P902 "MAIN" t "F t IR"

3 & 4S ft T h

P902 "MAIN" to "Front IR"Pin Label STBY Run Diode Check1 IR 2.84V 2.7V 2.63V2 Gnd Gnd Gnd Gnd

1 Infrared Receiver

7 & 8Intelligent

Soft Touch Key Board

3 Key1 3.3V 3.3V 1.77V4 Key2 3.3V 3.3V 1.77V5 LED_RED 3.25V 0V 1.72V6 Gnd Gnd Gnd Gnd

10

Intelligent Sensor 7 EYE_SCL 3.3V 3.3V 1.72V

8 EYE_SDA 3.3V 3.3V 1.72V9 Gnd Gnd Gnd Gnd

10 3.3VST 3.3V 3.3V 0.85V

Stand-By 3.3V

11 n/c n/c n/c n/c12 n/c n/c n/c n/c13 Touch_Ver_Check 0.19V 0V 1.69V14 n/c n/c n/c Open13 15 n/c n/c n/c OpenSoft Touch

Sensitivity Setting



Presenter

Presentation Notes

This set does not use the usual U2 IC controlled front Power LEDs. (Moving LEDs) Control is determined by the logic levels of pins 13, 14 and 15.

P1401 Main Board LVDS Video Signal Test Points

Waveforms Taken from P1401 pins 11 and 12, but there are actually 20 pins carrying video.

P106Control

P1401 Main

Pin Pin y p y gInput Signal SMPT Color Bar. 20mV per/div.

Pin 11 5mSec per/div 100mV p/p Pin 12 5mSec per/div 100mV p/pP140151 1

50 2 3D-Sync49 3 TXD48 4 RXD47 546 645 744 843 942 1042 1041 11 Video40 12 Video39 13 Video38 14 Video37 1536 16 CLK35 17 CLK34 1833 19 Video

Pin 11 2mSec per/div 100mV p/p Pin 12 2mSec per/div 100mV p/p

The rest of the Waveforms are very similar in appearance and Peak to Peak.

32 20 Video31 21 Video30 22 Video29 23 Video28 24 Video27 2526 2625 27 Video24 28 Video23 29 Video

Main Board

Note1: The Control Board has Test Points that make taking measurements easier to take.

Note2: The Control Board pins are

23 29 Video22 30 Video21 3120 32 CLK19 33 CLK18 3417 35 Video16 36 Video15 37 Video14 38 Video Main Board

P1401 LocationNote2: The Control Board pins are reversed from the Main Board. Pin 1 is at the bottom of P106 connector. Use the table on the left.

Note3: Use the VS DA Test Point and

13 39 Video12 40 Video11 4110 429 438 447 456 465 47 Disp_En4 48


Note3: Use the VS_DA Test Point and external trigger to help lock the scope onto the video waveforms.

4 483 492 501 51

P1401 Main Board LVDS Voltage and Diode Check

P1401 "Main" to P106 LVDS "Control" Pin Label Run Diode Check Pin Label Run Diode Check

P1401

1 Gnd Gnd Gnd 26 Gnd Gnd Gnd2 VS_3D *0V OL 27 TE1P 1.11V 1.25V3 UART_TXD 3.31V OL 28 TE1N 1.19V 1.25V4 UART_RXD 3.3V OL 29 TD1P 1.11V 1.38V5 n/c n/c n/c 30 TD1N 1.19V 1.37V6 n/c n/c n/c 31 Gnd Gnd Gnd6 n/c n/c n/c 31 Gnd Gnd Gnd7 Gnd Gnd Gnd 32 RCLK1P 1.16V 1.25V8 Gnd Gnd Gnd 33 RCLK1N 1.13V 1.25V9 Gnd Gnd Gnd 34 Gnd Gnd Gnd

10 Gnd Gnd Gnd 35 TC1P 1.11V 1.25V11 TE2P 1.11V 1.25V 36 TC1N 1.19V 1.25V12 TE2N 1.19V 1.25V 37 TB1P 1.11V 1.38V13 TD2P 1.11V 1.38V 38 TB1N 1.19V 1.37V14 TD2N 1.19V 1.37V 39 TA1P 1.11V 1.38V15 Gnd Gnd Gnd 40 TA1N 1.19V 1.37V16 RCLK2P 1.16V 1.25V 41 Gnd Gnd Gnd17 RCLK2N 1 13V 1 25V 42 n/c n/c n/c17 RCLK2N 1.13V 1.25V 42 n/c n/c n/c18 Gnd Gnd Gnd 43 n/c n/c n/c19 TC2P 1.11V 1.25V 44 n/c n/c n/c20 TC2N 1.19V 1.25V 45 n/c n/c n/c21 TB2P 1.11V 1.38V 46 SDA 3.3V OL22 TB2N 1.19V 1.37V 47 DISP_EN 3.05V 1.0V_23 TA2P 1.11V 1.38V 48 SCL 3.3V OL24 TA2N 1.19V 1.37V 49 PC_SER_DATA 3.31V OL25 Gnd Gnd Gnd 50 PC_SER_CLK 3.31V OL

51 Gnd Gnd Gnd* Pin 50 0V (No 3D) 1.65V (With 3D)Pins in Bold are Video pins (20 Total)



Voltage and Diode Mode Measurements for the Main Board Speaker Plug

P1404 Main Board Motion Remote and 3D Transmitter Voltage and Diode Check

P1404 "MAIN Board" To "Motion Remote Sensor" P14040 oa d o ot o e ote Se so


1 3.3V_Normal 0V 3.29V 0.49V

2 Gnd Gnd Gnd Gnd

3 3D_RF_RX 0V 3.29V 1.18V

Pin

_ _4 3D_RF_TX 0V 3.29V 1.17V

5 3D_RFModule_Reset 0V 3.1V 2.37V

6 3D_RFModule_DC 0V 0.1V 1.32V

7 3D_RFModule_DD 0V 0.1V 1.34V

8 Gnd Gnd Gnd Gnd

9 3D_RF_GPIO_0 0V 0V 1.26V

10 3D_RF_GPIO_1 0V 0V/3.18V 1.26V

11 3D_RF_GPIO_2 0V 0V 1.26V

*12 3D_L/R_Sync 0V 0V/1.59V Open

*No 3D / With 3D

Note: Pin 12 with 3D Sync 3.48V p/p 60 Hz square wave.

RF Freq GPIO 0 (9) GPIO 1 (10) GPIO 2 (11)3D Disable 0 0 0

60Hz 1 0 0

59.94Hz 0 1 0



FRONT IR, POWER LED and SOFT TOUCH KEY PAD SECTIONThe following section gives detailed information about the Front IR and Soft Touch Key Pad. These boards contains the Infrared Receiver, Intelligent Sensor and PowerKey Pad. These boards contains the Infrared Receiver, Intelligent Sensor and Power LEDs section.

The Soft Touch Function Keys is actually a thin pad adhered to the front protective shield and actually underneath (as viewed from the rear) the Front IR Board.shield and actually underneath (as viewed from the rear) the Front IR Board.

The Power LED is driven by LED_RED pin from the Micro IC101. Sent to the base of Q901 and then to P902 pin 4. Then sent to the Ft. IR board connector pin 5 P100.This board has no adjustments other than the Soft Touch Key board sensitivity fromThis board has no adjustments other than the Soft Touch Key board sensitivity from the Customer’s Menu.

The Front Control Board (IR and Intelligent Sensor) receives its operational B+ from the Main Board. 3.3V ST P100 pin 10 from the Main Board. This voltage is generated t e a oa d 3 3 _S 00 p 0 o t e a oa d s o tage s ge e atedon the Main Board by the 3.3V_ST Regulator (IC500) The Intelligent Sensor IC communicate with the Main Board Microprocessor (IC101) via Clock and Data lines out P100 to P902 pins 7 and 8.

The IR signal is routed back to the Main Board via pin 1.

Also, the Soft Touch Key Pad is routed through out P100 to P902 pins 3 and 4.


Front IR and Intelligent Sensor Board Locations

Lower Left Side (As viewed from rear)Lower Left Side (As viewed from rear).

IR Receiver

P100 To Main Board

To gain access to the Front IR board, as viewed from the bottom of the TV, remove to two screws that hold the Front Right Speaker and pull the speaker out.

Screw Screw


P100 IR Board Connector Voltage and Pin Identification

32KHz Pulse

P100 "Front IR and Soft Touch Keys" to "Main" Board P902Pin Label STBY Run Diode Check

3 & 4 For the Soft T h K P d

32KHz Pulse3.5V p/p 1 IR 2.84V 2.7V OL

2 Gnd Gnd Gnd Gnd3 Key1 3.3V 3.3V OL4 Key2 3.3V 3.3V OL

7 & 8 Front LEDsand

Touch Key Pad section.

4 Key2 3.3V 3.3V OL5 LED_RED 3.25V 0V OL6 Gnd Gnd Gnd Gnd7 EYE_SCL 3.3V 3.3V OL8 EYE SDA 3 3V 3 3V OL

10 Stand-By 3.3VFrom IC302

Intelligent Sensor 8 EYE_SDA 3.3V 3.3V OL9 Gnd Gnd Gnd OL10 3.3VST 3.3V 3.3V 2.3V11 n/c n/c n/c OL12 / / / OL12 n/c n/c n/c OL13 Touch_Ver_Check 0.19V 0V 0.62V14 n/c n/c n/c OL15 n/c n/c n/c OL

For Readings when any Key is touched, see Soft Key Pad SectionFor Key 1 and Key 2.

1P100



For Key 1 and Key 2.

Presenter

Presentation Notes

This set does not use the usual U2 IC controlled front Power LEDs. (Moving LEDs) Control is determined by the logic levels of pins 13, 14 and 15.

Soft Touch Key Pad Resistance

d d d

P100 (Key 1, Key 2) Resistance Reading with Soft Touch Key pressed.

KEY Pin 3 measured from Gnd KEY Pin 4 measured

from Gndand Diode Mode

ChecksPower 3.0M Ohms Enter 3.0M Ohms

CH (Dn) 1.9M Ohms Menu 1.9M OhmsInput 900K Ohms Volume (+) 900K OhmsThe Front IR Board

h K b d CH (Up) 205K Ohms Volume (-) 205K Ohms

P100 Voltage Measurements with Soft Touch Key pressed.

KEY Pin 3 measured from Gnd KEY Pin 4 measured

from Gnd

has a Key board decoder that is generating these Resistance changes when a Soft Touch Key is touched from Gnd from Gnd

Power 2.4V Enter 2.42VCH (Dn) 1.6V Menu 1.6V

Input 0.9V Volume (+) 0.89V

is touched.This in turn pulls down the Key 1 and Key 2 lines to be interpreted by the Microprocessor.

P100 Connector “FT IR Board“ to P902 “Main” (No Key Pressed)Diode Mode

Input 0.9V Volume ( ) 0.89VCH (Up) 0.2V Volume (-) 0.2V

Pin Label STBY Run Diode Mode3 KEY 1 3.29V 3.29V 2.58V4 KEY 2 3.29V 3.29V 1.58V

Readings taken with all connectors Disconnected. Black lead on Gnd. DVM in Diode Mode.


MOTION REMOTE and 3D SYNC BOARD SECTION

The first time the Motion Remote has it’s batteries installed and pointed at the Television, the Motion Remote is synchronized with the TV. After that, whenTelevision, the Motion Remote is synchronized with the TV. After that, when pointing the remote at the TV and pressing the Enter key, a pointer appears on screen, then by moving the Motion Remote around, the pointer moves with the movement of the remote. When the pointer is placed over a selectable button, you can press the center “Enter” button and active theselectable button, you can press the center Enter button and active the object. This makes navigation much easier.

You can also adjust the volume, change channels and mute the audio with the Motion Remote and it has a convenient “Home” button for the TV Menu.Motion Remote and it has a convenient Home button for the TV Menu.

A wrist band can be attached to the remote to avoid dropping and damaging the remote.

The Motion Remote utilizes a specialized receiver on the Television to receive the RF signal and this information is then routed to P1302 and on to the IC101 the BCM IC for pointer positioning and interpretation of the other functions.

How to Re-register the Magic Motion Remote Control after Registration Failure. Reset the remote control by pressing and holding both the ENTER and MUTE buttons for 5 seconds.

An LED will blink 3 times indicating the remote is ready for registering.


Motion Remote “Magic Remote” AKB73295502

Motion Remote Receiver Board

The following section gives detailed information about the Motion Remote Receiver Board The Motion Remote Receiver receives signals from theReceiver Board. The Motion Remote Receiver receives signals from the Motion Remote to manipulate the On-Screen pointer.

The Motion Remote receives its operational B+ from the Main Board:

• 3.3V_Normal P1302 pin 1 from the Main Board to J1 Pin 1. This voltage is generated on the Main Board (IC505)

• 3 3V MULTI generated on the Main Board (IC402)• 3.3V_MULTI generated on the Main Board (IC402).

No Connector NumberSilk Screened on board

p/n: EBR72499601

1


Motion Remote Receiver Board Close Up

Rear View

p/n: EBR72499601

No Connector No.

11

Front View

RF TransmitterReceiver


Motion Remote Connector Voltage and Diode Check

"Motion Remote Sensor“ to P1302 "MAIN Board"Pin Label STBY Run Diode Check No LabelPin Label STBY Run Diode Check1 3.3V_Normal 0V 3.33V 0.49V2 Gnd Gnd Gnd Gnd3 M_REMOTE_RX 0V 3.29V 1.18V

No Label

4 M_REMOTE_TX 0V 3.3V 1.17V5 M_RFModule_Reset 0V 3.3V 2.37V6 DC_Mremote 0V 3.3V 1.32V7 DD Mremote 0V 3 3V 1 34V

1

7 DD_Mremote 0V 3.3V 1.34V8 Gnd Gnd Gnd Gnd9 3D_GPIO_0 0V 0V 1.26V

10 3D_GPIO_1 0V 0V/3.18V 1.26V11 3D_GPIO_2 0V 0V 1.26V12 3D Sync 0V 0V/1.59V Open

*Pin 10/12 voltages without 3D / with 3D

3.48V p/p60 Hz

Pin 12w/3D

Freq GPIO 0 GPIO 1 GPIO 2

3D Disable 0 0 0

60Hz 1 0 0

59.94Hz 0 1 0



INVISIBLE SPEAKER SYSTEM SECTION

The 50PZ950 contains the Invisible Speaker system

Invisible Speaker System Overview (Full Range Speakers) p/n: EAB62028901

The 50PZ950 contains the Invisible Speaker system.The Full Range Speakers point downward, so there are no front viewable speaker grills or air ports.

Installed Bottom View

Anti Rattle Pad

Anti Rattle Pad

Reading across speaker wires,

8.2 ohm.

Remove two screwsfrom the bottom

Rear View Front View

Speaker


SpeakerConnection

INTERCONNECT DIAGRAM (11 X 17 Foldout) SECTION

This section shows the Interconnect Diagram called the 11X17 foldout that’s available in the Paper and Adobe pversion of the Training Manual.

Use the Adobe version to zoom in for easier readingUse the Adobe version to zoom in for easier reading.

When Printing the Interconnect diagram, print from the Ad b i d i t t 11X17 i f b tAdobe version and print onto 11X17 size paper for best results.


P6

FS2 VA

18V J1

J17

Z-SUSWaveform

P2

Vzbias TPR151

P4

10A/125V

7A/125V

6.3A/250V

P7

P3

Top 2 pins are VA11~12

Z-SUSP/N: EBR68342001

FS1 VS

FS3 (M5V)

5V J28

R1Y-OE

VR1Vzbias

FS1/FS2: Diode CheckOL: Connected or DisconnectedFS3: Diode Check0.76V: Connected1.03V: Disconnected

The Z-SUS will run stand alone.Disconnect P2 to the Y-SUS.Disconnect P105 on CTL. Board.Jump 17V from the SMPS J2 (just left of P813) to Z-SUS J1 (just above P6) connector.Ground Y-OE Z-SUS (bottom R1).Output Waveform J17 (281V p/p).


12

32X1

25 MHz

IC702

IC101

IC701

IC22

D1

IC703L1

P105

P107 P108 P22 n/c

Auto Gen

VS_DA

P2

P106

IC53

IC11


n/c Upgrades


4.94V

1.05V

1.06V

1.05V

3.3V 1.8V

1.8V On

3.31V

3.27V

12

32

1 2

3

P201

FPC

All FGndP101

1, 2 FG5V

P202

FPC

FPC

P203

FPC

P204

P102

FPC

P205

FPC

P206

P106

Waveform

P2323.3V in onPins 9~11

P3313.3V in onPins 42~44

P211Va in onPins 3~4

P311Va out onPins 3~4

42PW350 (42T3 Panel) CIRCUIT INTERCONNECT DIAGRAM

Connect Scope between Waveform TP on Y-Drive and Gnd

Note a:The RL_On command turns on the 17V, +5V, Error_Det and AC_DET.Note b: The M-On command turns on M5V, Va and Vs.Note c: The Error Det line is not used in this model.Note d: AC Det line is not used. Note e: Pin 18 is grounded on the Main. If opened, the power supply turn on automatically.

Remove LVDS Cable. Short across Auto Gen TPs to generate a test pattern.

* If the complaint is no video and shorting the points (AutoGen) causes video to appear suspect the Main board or LVDS cable.Note: LVDS Cable must be removed for Auto Gen to work.

With the unit on, if D1 is not on, check 5V supply. If present replace the Control Board.If missing, see (To Test Power Supply)

To Test Y-SUS18V, FG5V & FG15V supplies.Disconnect all connectors.Jump M5V from SMPS to Y-SUS.(J35 bottom of the board is an easy TP).Ground J73 (OE)Ground the Y-SUS. Apply AC to SMPS.Check 18V, FG5V & FG15V supplies.

Note: IC53 (3.3V Regulator) routed to all X Boards

FS501 18V Diode Check reads

0.85V Board Connected or 1.13V

Disconnected

To SpeakersAll speaker

wires 0V~1VSoft to Loud

Power LEDP100IR/Key Board

p/n: EAB62028901

To Ft IR

P6 Pins inverted from P2 on Control

Connect Scope between Waveform TP J17 on Z board and Gnd. Use RMS information just to

check for board activity.

P101

P103

P201

P202


Pin Label Run

FGnd FGnd1-2

P212 "Y-SUS" to "Y-Drive" P102Pin Label Run

1-10

Black Lead on Floating Gnd

Y-DRIVE BOARDp/n: EBR69839101

SMPS Test – Unplug P813to Main board. Use two (100W) light bulbs in series between Vs and Gnd to place a load on the SMPS. Apply AC, all voltage should run. See “Auto Gen” on the Control board to perform a Panel Test.If all supplies do not run when A/C is applied, disconnect P811 to isolate the excessive load.

P813 "SMPS" to P500 "Main"Pin Label STBY Run No Load Diode

18 e Auto_Gnd Gnd Gnd 4.86V Open

17 b M_ON 0V 3.28V 0V Open

16 a dAC Det 0V 4.06V 4.94V 3.1V

15 a RL_ON 0V 3.28V 0V Open

13-14 STBY_5V 3.47V 5.14V 4.94V 2.53V


8 a c Error_Det 3.44V 4.02V 4.94V 2.84V

5-7 a 5.1V 0.46V 5.17V 5.22V 2.13V


1_2 a17V 0V 17V 17V 3.06V

P811 "Power Supply" to P7 "Z-SUS"

Pin Label Run Diode

1~2 Vs *200V Open

3~4 Gnd Gnd Gnd

5 Va *55V Open

6 M5V 5.0V 1.38V

X-Board Leftp/n: EBR68019901

X-Board Rightp/n: EBR68020001

A

OE should be 0V(5V indicates a Problem)

Z-SUS Signal

3D sync/ Motion Remotep/n: EBR72499601

To P1404 Main

*Voltage varies with panel label

Attached to front glass

P1404 on Main to Motion Remote3D Sync pin 12 (3.48V p/p) 60HzPin 9 or 10 should be high to turn on 3D RF transmitter on Motion Remote board.

B

Motion

PANEL TEST:

C523

FG5V+

-FG

FL1

FGnd FGnd

11-12 FG5V 5V

0V

B

VR601Set-up

195uSec ± 5uSec

100V 100uS69VRMS 576V p/p

VR401Set-Dn

A

155V ± 5V

100V 2MSec 577V p/p

Note: Screws on Y-Drive are Chassis Ground

P203

P312VA in onPins 3~4

Z-SUB BOARDp/n: EBR71728001

63VRMS 50V 100uSec 230V p/p

VS TP

F3022.5A/250V

STBY 160VRUN 390V

P811

P813

VA TP

F10110A/250V


P702

SC101

RL103

T901

L601

L602

VSSupply

VASupply

5VSupply

17VSupply


VR502VA AdjVR901

VS Adj

D602

Q601

Q602

D101

Q802

Q801

IC301

Q356

D352

Q355

D351

Q501

D504

D901

D902

P206P205P204P203P202P201 P306P305P304P303P302P301

18V P2 pins 13-15M5V P2 pin 11-12

18V P6 pins 1-3M5V P2 pin 4-5

1~3 (18V)4-7 (M5V)

28~30 (18V)24-27 (M5V)

IC701 (1.8V Core)(1) Gnd(2) 1.8V(3) 3.31V

IC53 (3.3V Reg)(1) 4.94V(2) 3.32V(3) Gnd

Diode Check

P7 "Z-SUS" to "SMPS" P811Pin Label Run Diode Check1~2 +Vs *200V OL3~4 Gnd Gnd Gnd5 +Va *55V OL6 M5V 5.06V 1.03V* Note: Varies according to Panel Label

P2 "Z-SUS" to "Y-SUS" P206Pin Label Run 1~4 ER_PASS 98V~102V OL5 n/c n/c n/c

6~7 +Vs *200V OL8 n/c n/c n/c

9~11 Gnd Gnd Gnd12 M5V 5.06V 1.03V

* Note: Varies according to Panel Label

P2 "Control" to P201 "Z-SUS Board"

Diode CheckPin Label Run

1 Gnd Gnd Gnd

2 SUSUP 0.22V OL

3 Gnd Gnd Gnd

4 SUSDN 0.79V OL

5 n/c n/c OL

6 ZBIAS 1.92V OL

7 Gnd Gnd Gnd

8 VZ_CON 3.25V OL

9 CTRL_OE Gnd OL

10 Y-OE 0.05V OL

11~12 M5V 5.06V 1.15V

13~15 (+15V) 18.2V OL

P201 "Z-SUS Board" to P2 "Control"


1~3 (+15V) 18.2V 2.18V

4~5 M5V 5.06V 1.03V

6 Y-OE 0.05V OL

7 CTRL_OE Gnd Gnd

8 VZ_CON 3.25V OL

9 Gnd Gnd Gnd

10 ZBIAS 1.92V OL

11 n/c n/c OL

12 ZSUSDN 0.79V OL

13 Gnd Gnd Gnd

14 ZSUSUP 0.22V OL

15 Gnd Gnd Gnd

P211 "Y-SUS" to "Y-Drive" P106Pin Label Run Diode Check

1~2 VSC (Y-Scan) 146.2V OL

3~4 VPP 145V OL5 n/c n/c OL

6 SUS_DN (FG) FG FG

7 CLK 0.92V 1.46V

8 STB 2.24V 1.46V

9 OC1 2.26V 1.54V

10 DATA 0V 1.46V

11 OC2 2.8V 1.54V

12 SUS_DN (FG) FG FG


BUFFER OUTPUTDIODE CHECK0.8V Red Lead on FGndOL Black Lead on FGnd

VSCANDIODE CHECK1.13V Red Lead on FGndOL Black Lead on FGnd

Y-DRIVE CHECKS

VPPDIODE CHECK0.67V Red Lead on FGndOL Black Lead on FGnd

DATADIODE CHECK0.78V Red Lead on FGnd2.1V Black Lead on FGnd

CLK, LE, OC1, OC2DIODE CHECK0.6VV Red Lead on FGndOL Black Lead on FGnd

Pins are reversed

from Y-SUS

Pins are reversed

FromY-SUS

IC703(1) 4.94V(2) 0V(3) Gnd(4) Gnd(5) Gnd(6) 0.83V(7) 0.61V(8) 0.52V

( 9) 1.92V(10) 1.06V(11) 1.06V(12) 1.06V(13) 6.1V(14) 4.96V(15) 3.31V(16) 5V

P105 "Control" to P101 "Y-SUS"Pin Label Run Diode Check1~3 +15V 18.2V OL4~7 +5V 4.94V 1.15V8~11 Gnd Gnd Gnd

12 Dumy2 2.14V OL13 Y-OE 0.03V OL14 PC 1.84V OL15 ER_DN 0.5V OL16 DATA_PRE 0.01V OL17 ER_UP 0.3V OL18 SC_A 1.45V OL19 RAMP_UP 0.22V OL20 STB 1.5V OL21 RAMP_BLK 1.07V OL22 CLK 0.6V OL23 SUS_DN 2.71V OL24 DUMMY_3 2.14V OL25 DUMMY_1 1.07V OL26 DUMMY_4 1.35V OL27 SUS_UP_0 0.75V OL28 CTRL_OE 0.11V OL29 RAMP_DN 2.17V OL30 Gnd Gnd Gnd

D506 18V SourceD502 -Vy Source 200VD503 VSC Source 146V

P212

P211

P213

-Vy TPR201

-Vy AdjVR502

P101

P206

Y-SUSP/N: EBR68341901

C213

T501

T502

FG5VJ54

OE J73FS501

18V

18V J55

M5V J13

FG15VJ66

VR601Set-Up

VR401Set-Dn

D506

D502D503

D508 FG15V SourceIC508 FG5V Source

Back of Board

Scan FG

M5V J35

There are Chocolate pieces between the Y-SUS and the Panel.

Be sure to return them to there correct location if they should fall off

when removing the Y-SUS.

FG5V Diode Check reads

1.33V Board Connected or 1.63V Disconnected

FG5V Diode Check reads

1.33V Board Connected or OL Disconnected

Ribbon CableY-SUS and Y Drive Signals

See Waveform Above

Bottom 2 Pins are VA

4~5

Diode Check TCP disconnectedRed Lead on TCP VA OLBlack Lead on TCP VA 0.5VRed Lead on TCP 3.3V OLBlack Lead on TCP 3.3V 0.53VEC OL either way

P902 "MAIN" to "Front IR"Pin Label STBY Run 1 IR 2.84V 2.7V2 Gnd Gnd Gnd3 Key1 3.3V 3.3V4 Key2 3.3V 3.3V5 LED_RED 3.25V 0V6 Gnd Gnd Gnd7 EYE_SCL 3.3V 3.3V8 EYE_SDA 3.3V 3.3V9 Gnd Gnd Gnd10 3.3VST 3.3V 3.3V11 n/c n/c n/c12 n/c n/c n/c13 Touch_Ver_Check 0.19V 0V14 n/c n/c n/c15 n/c n/c n/c

P1401

IC1400

P902

12

32

P14041

23

2

IC1401

IC700

P700

12

32

IC1406

IC506

IC504

IC1407

IC1202

1 2 3

123

IC600

IC507

IC1404

L1402

IC502

L503

D

G

SQ501

L506IC1201A2 A1

C

D200

IC103

L502

Q1401D

GS

D

GS

Q1402

X1400

C

BE

Q1400

P501

X200

24MhzL700L701

L702

L703

R-R+L-L+

D501

IC501

TUNER




Q901

C

B E

24Mhz


8. NC 7. SDA 6. SCL 5. NC 4. NC 3. 5V

2. NC 1. NC

TU1300

IC101Micro/Video

Processor C

A1 A2

IC1402

D805

IC1101

IC804

CBEQ807

Q1304

C

B E

C

B E

Q1305IC901

IC900

IC801C

B E

Q805

C

A1A2D803

IC802

CB

ECA1

A2D804 Q103

C BE Q8061

D801C

A1

A2

IC104

IC102

IC109

123

IC505

CB

EQ500

3

12

IC500

Q800

CB

EQ900

NANDFLASH

3.3V_ST5V_ST in (3)


Serial Flash

DDR

Audio AmpEDID

EDID

RS232

EDID

DDR

DDR

3D Formatter

+1.8V+3.3V_3D_A In (3)

Serial Flash

+1.0V+5V in

+3.3V Reg

+5V in (3)

HDCP EEPROMEEPROM

+1.26V_VDDC) Reg +5V_ST_EN In +5V_ST_EN Switch

+5V_ST In

+3.3V+5V in

+2.5V_AVDD+3.3V_AVDD

USB +5V OCP+5V in

+5V_TU17V in


EDID+1.2V_DE+3.3V in (3)

Tuner SIF

Tuner CVBS

Hot Swap

B+ Routing

Q501 CTL

HDMI CEC Hot SwapEDID WP

RS232 TX Buffer

Hot Swap

+3.3V_3D Reg


LED_RedDriver

Serial Flash WP

Ribbon CableLVDS

See 2nd page for Waveforms

ATo Motion Remote

3D Sync

To P902 Main

B

WITH NO Y-DRIVE (Board removed completely)

116VRMS 100V 2mSec 485V p/p

112VRMS 100V 2mSec 470V p/p

DO NOT USE THIS TP FOR ADJUSTMENTSWaveform Taken from C213 Left Side with Y-DRIVES

42PW350 Main Board (Front Side) Component Voltages

IC103 Serial IC502 +1.26V_VDDC IC507 +5V_TU IC1404 +1.0V Q501 +5V_ST_ENFlash Pin Regulator Pin Regulator Pin Regulator Pin Switch

Pin For HDMI [1] 5V (In) [1] 11.1V [1] 5V (In) [B] 0.7V[1] Gnd [2] 5V (In) [2] 17V [2] 0V [C] 5.2V[2] Gnd [3] 0V [3] 3.1V [3] 0V [E] 5.2V[3] Gnd [4] 0V [4] 1.8V [4] 0V[4] Gnd [5] 081V [5] 0.8V [5] 0V Q901 LED_RED[5] 3.29V [6] 0.81V [6] 0.6V [6] 0.8V Pin Driver[6] 3.29V [7] 0.72V [7] 0V [7] 0.65V [B] 0.71V[7] 3.29V [8] 0.53V [8] 5V [8] 0.54V [E] 0V[8] 3.29V [9] 1.7V [9] 1.7V [C] 0V

[10] 1.3V IC600 +1.2V_DE [10] 1.05VIC501 +1.5V_DDR_IN [11] 1.3V Pin Regulator [11] 1.05V Q1400 Write Protect

Pin Regulator [12] 1.3V [1] 3.3V (In) [12] 1.05V Pin for IC1402[1] 5V (In) [13] 6.47V [2] 1.26V (Out) [13] 6.1V [B] 0V[2] 5V (In) [14] 0 25V [3] Gnd [14] 0 15V [E] 0V[2] 5V (In) [14] 0.25V [3] Gnd [14] 0.15V [E] 0V[3] 0V [15] 2.96V [15] 2.9V [C] 3.18V[4] 0V [16] 5V (In) [16] 0V[5] 0V Q1401 SCL_3.3V_MOD[6] 0.81V IC504 +3.3V_AVDD D200 Reset IC1406 +3.3V_VST Pin Buffer[7] 0.72V Pin Regulator Pin Speed Up Pin +3.3V_3D [B] 3.28V[8] 0.53V [1] 0V [A1] 0V [1] 0V [C] 3.3V[9] 1.7V [2] 3.3V (Out) [C] 0V [2] 3.31V (Out) [E] 3.28V

[10] 1.58V [3] 5.2V (In) [A2] 0V [3] 5V (In)[11] 1.58V Q1402 SDA_3.3V_MOD[12] 1.58V IC506 +3.3V D501 Reg IC1407 (+1.8V) Pin Buffer[13] 6.7V Pin Regulator Pin IC507 Pin Regulator [B] 3.28V[14] 0.12V [1] 0V [A] 0V [1] 0V [C] 3.3V[15] 2.98V [2] 3.3V (Out) [C] 5V [2] 1.8V (Out) [E] 3.28V[16] 2.98V (In) [3] 5.2V (In) [3] 3.3V (In)

42PW350 Main Board (Back Side) Component Voltages

IC102 HDCP IC505 +2 5V AVDD IC900 RS232 Tx/Rx IC1101 USB 5V Q800 HDMI CEC Q1305 TunerIC102 HDCP IC505 +2.5V_AVDD IC900 RS232 Tx/Rx IC1101 USB 5V Q800 HDMI CEC Q1305 TunerEEPROM Pin Regulator Pin Pin Limiter Pin Buffer Pin CVBS

Pin [1] 3.3V (In) [1] 3.3V [1] Gnd [1 B] 3.29V [B] 3.63V[1] Gnd [2] Gnd [2] 5.6V [2] 5.1V (In) [2 S] 3.29V [C] 0V[2] Gnd [3] 2.52V (Out) [3] 0V [3] 5.1V (In) [3 D] 3.23V [E] 4.3V[3] 3.3V [4] 0V [4] 3.3V [4 G] 3.3V[4] Gnd IC801 IC801, IC802 [5] (-5.6V) [5] 0V D801 Biasing[5] 3.3V EDID Data [6] (-5.6V) [6] 5.1V (Out) Q806 Hot Pin for Q800[6] 3.3V Pin For HDMI [7] 5.7V [7] 5.1V (Out) Pin Swap [A1] 3.28V[7] 3.3V [1] Gnd [8] 0V [8] n/c [B] 0V [C] 3.32V[8] 3.3V [2] Gnd [9] 3.3V [C] 0V [A2] 0V

[3] Gnd [10] 0V IC1402 Serial [E] 0VIC109 EEPROM [4] Gnd [11] 3.3V Pin Flash D803 5V

for Micro [5] 3.3V [12] 3.3V [1] 3.29V Q807 Hot Pin RoutingPin [6] 3.3V [13] 0V [2] 0V Pin Swap [A1] 0V[1] Gnd [7] 3.3V [14] (-5.6V) [3] 3.3V [B] 0.1V [C] 3.32V[2] Gnd [8] 3.3V [15] Gnd [4] 0V [C] 0V [A2] 3.28V[3] Gnd [16] 3.3V (B+) [5] 0V [E] 0V[4] Gnd IC804 EDID Data [6] 0V D804 5V[ ] [ ][5] 3.3V Side Input IC901 EDID Data [7] 3.29V Q900 Hot Pin Routing[6] 0V Pin For HDMI for PC [8] 3.29V Pin Swap [A1] 3.28V[7] 3.3V [1] Gnd Pin For HDMI [B] 0.63V [C] 3.32V[8] 3.3V [2] Gnd [1] Gnd Q103 EDID [C] 0V [A2] 0V

[3] Gnd [2] Gnd Pin WP [E] 0VIC500 3.3V_VST [4] Gnd [3] Gnd [B] 0V D805 5V

Pin Regulator [5] 3.3V [4] Gnd [C] 5V Q1304 Tuner Pin Routing[1] Gnd [6] 3.3V [5] 3.3V [E] 0V Pin SIF [A1] 5.1V[2] 3.3V (Out) [7] 3.3V [6] 3.3V [B] 0.23V [C] 4.9V[3] 5.09V (In) [8] 3.3V [7] 3.3V Q500 +5V_ST_EN [C] 0V [A2] 0V

[8] 3.3V Pin Switch CTL [E] 0.92V[B] 0.64V[C] 0V[E] 0V

End of the 42PW350 Presentation

This concludes the 42PW350

Presentation 09/06/2011 UpdatePage 1: Corrected Front Cover page: 1080P changed to 720P.Pages 10 and 11: Dropped Wireless Ready information. g pp yPages 21~28: Added Power Off Status information.Page 29: Added EDID D/L informationPage 91: Added waveform for Y-SUS waveform with no Y-DrivesPage 165 Interconnect: Added waveform for Y-SUS waveform output with no Y-Drives.M d 3D S ti i f t f Di bl S tiMoved 3D Section in front of Disassembly Section

Th k YThank You.


Lg 42pw35 - Training Manual

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