PLASMA MONITOR/TUNER SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : RF-04GC MODEL : MZ-42PM13/13B/23 MODEL : RZ-BA55 website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html
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PLASMA MONITOR/TUNERSERVICE MANUAL
CAUTIONBEFORE SERVICING THE CHASSIS,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by inthe Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual toprevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used duringthe servicing of a receiver whose chassis is not isolated fromthe AC power line. Use a transformer of adequate power ratingas this protects the technician from accidents resulting inpersonal injury from electrical shocks.
It will also protect the receiver and it's components from beingdamaged by accidental shorts of the circuitry that may beinadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this monitor is blown, replaceit with the specified.
When replacing a high wattage resistor (Oxide Metal FilmResistor, over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to high vacuum and large surface area of picture tube,extreme care should be used in handling the Picture Tube.Do not lift the Picture tube by it's Neck.
Leakage Current Cold Check(Antenna Cold Check)With the instrument AC plug removed from AC source,connect an electrical jumper across the two AC plug prongs.Place the AC switch in the on position, connect one lead ofohm-meter to the AC plug prongs tied together and touch otherohm-meter lead in turn to each exposed metallic parts such asantenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, themeasured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis thereading must be infinite.An other abnormality exists that must be corrected before thereceiver is returned to the customer.
Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitorbetween a known good earth ground (Water Pipe, Conduit, etc.)and the exposed metallic parts.Measure the AC voltage across the resistor using ACvoltmeter with 1000 ohms/volt or more sensitivity.Reverse plug the AC cord into the AC outlet and repeat ACvoltage measurements for each exposed metallic part. Anyvoltage measured must not exceed 0.75 volt RMS which iscorresponds to 0.5mA.In case any measurement is out of the limits specified, there ispossibility of shock hazard and the set must be checked andrepaired before it is returned to the customer.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument'sexposed METALLIC PARTS
Good Earth Groundsuch as WATER PIPE,CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF
- When using the remote control aim it at the remote control sensor of the set.- There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature.
POWERMUTE
INPUT SELECT MULTIMEDIA
LIST ARC MENU
PR
PR
VOLOK
1 2 3
4 5 6
7
PSM SSM
8 9
0
VOL
SPLIT ZOOM PIP/DW SLEEP
REVEAL TEXT/PIP PR+
WIN. SIZE MIXPIP PR-
POSITION TIMESWAP
HOLD INDEXPIP INPUT
?
i
I/II
MULTIMEDIAselects the Component, RGB or DVI
modes.
PIP/DWswitches the sub picture on or off.
selects PIP or DW modes.PIP PR + /- (option)
selects a programme for the sub picture.SWAP
alternates between main and sub pic-ture.
PIP INPUTselects the input mode for the sub pic-
ture.WIN.SIZE
adjusts the sub picture size.POSITION
moves the sub picture to DD / EE or FF / GGdirection.
POWERswitches the set on from standby oroff to standby.
ARC changes the picture format.
MENUdisplays on screen menus one by one.exits the current menu.memorizes menu changes.
SWAP (option)returns to the previously viewed pro-gramme.Note : This function works only whenFavourite programme is set to Off.Otherwise each press of this buttonwill select a stored favorite pro-gramme.
SSMto select the sound appropriate toyour viewing programme character.
NUMBER buttons
SLEEPsets the sleep timer.
I/II (option)selects the language during dual lan-guage broadcast.selects the sound output.
TEXT/* (option)These buttons are used for teletext.For further details, see the ‘Teletext’section.Note : In teletext mode, the PIP PR+/-, SWAP and PIP INPUT buttons areused for teletext function.
LIST (option)displays the programme table.
INPUT SELECT
MUTEswitches the sound on or off.
DD / EE (Programme Up/Down)selects a programme or a menu item.
switches the set on from standby.FF / GG (Volume Up/Down)
adjusts the volume.adjusts menu settings.
OKaccepts your selection or displays the
current mode.
PSMadjusts the factory preset picture
according to the room.
SPLIT ZOOMenlarge the screen with regular
ration.
DESCRIPTION OF CONTROLS
- 4 -
- 5 -
<Front Panel Controls>
or
ON/OFF
VOLMENUINPUT SELECTON/OFF
- Shown is a simplified representation of the set.- Here shown may be somewhat different from your set.
1. Main Power Button
2. Remote Control Sensor
3. Power Standby IndicatorIlluminates red in standby mode, Illuminates green when theset is turned on
4. INPUT SELECT Button
5. MENUDisplays on screen menus one by one.Exits the current menu.Memorizes menu changes.
6. DD / EE (Programme Up/Down)selects a programme or a menu item.switches the set on from standby.FF / GG (Volume Up/Down)adjusts the volume.adjusts menu settings.
Note: If you want to use your external hi-fi stereo system, turnoff the internal speakers of the set.
6. EXTERNAL SPEAKER OUTPUT (8 ohm)Connect to optional external speaker(s).* For further information, refer to ‘Speaker & Speaker Stand’
manual.
7. POWER CORD SOCKETThis Monitor operates on an AC power. The voltage is indi-cated on the Specifications page. Never attempt to operatethe Monitor on DC power.
- 8 -
Watching VCR (When the Interface board is installed.)
- When connecting the Plasma Monitor with external equipments, match the colours of connecting ports (Video - yellow, Audio(L)- white, Audio(R) -red).
- Connect the VIDEO INPUT socket(yellow) with the BNC-RCA adapter to the VIDEO INPUT socket of the set.- If you have a mono VCR, connect the audio cable from the VCR to the AUDIO(L/MONO) input of the Plasma Monitor. - If you connect an S-VIDEO VCR to the S-VIDEO input, the picture quality is improved; compared to connecting a regular VCR
to the Video input. - Or, connect the Euro scart socket of the VCR to the Euro scart socket of the set.
Avoid having a fixed image remain on the screen for a long period of time. Typically a frozen still picture from a VCR, 4:3 pic-ture format or if a CH label is present; the fixed image may remain visible on the screen.Use the orbiter function to avoid having a fixed image. (Refer to p.20)
1. Press INPUT SELECT button on the remote control and select MNT AV or (MNT AV1 or MNT AV2).(When connecting with S-Video, select the MNT S-Video.)
2. Insert a video tape into the VCR and press the PLAY button on the VCR. (See VCR owner’s manual)
Watching external AV source (When the Interface board is installed.)
- When connecting the Plasma Monitor with external equipments, match the colours of connecting ports.- Or, connect the Euro scart socket of the VCR to the Euro scart socket of the set.
1. Press INPUT SELECT button on the remote control of the monitor to select MNT AV or (MNT AV1 or MNT AV2).2. Operate the corresponding external equipment. (See external equipment operating guide.)
Watching Cable TV (When the Interface board is installed.)
- After subscribing to a cable TV service from a local provider and installing a converter, you can watch cable TV program-ming. This monitor cannot display TV programming without a TV tuner device or cable TV converter box connected to themonitor.
1. Press INPUT SELECT button on the remote control and select MNT AV or (MNT AV1 or MNT AV2).2. Tune to cable service provided channels using the cable box.
• Component Input portsYou can get better picture quality if you con-nect DVD player with component input portsas below.
Component ports of theMonitor
Y PB PR
Video output ports of DVD player
YYYY
PbB-YCbPB
PrR-YCrPR
Watching DVD (When the Interface board is installed.)
How to connect- Connect DVD video inputs to Y, PB, PR of COMPONENT (DVD
INPUT) and audio inputs to Audio sockets of AUDIO INPUT.- Or, connect the Euro scart socket of the VCR to the Euro scart socket
of the set.
How to use1. Press INPUT SELECT button on the remote control of the monitor to
select MNT Component or (MNT AV1 or MNT AV2).2. Try this after turning on the DVD player.
(Refer to the DVD player's manual for operating instructions.)
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Connecting PC- To enjoy vivid picture and sound, connect a PC to the set.- Avoid keeping a fixed image on the set’s screen for a long period of time. The fixed image may become permanently imprinted on
the screen; use a screen saver when possible.- Connect PC to the RGB INPUT(PC INPUT) or DVI INPUT(DIGITAL RGB INPUT) port of the set; change the resolution output of
PC accordingly.- There might be a noise according to some resolution, vertical pattern, contrast or brightness in PC mode. Then change the PC
mode into other resolution or change the refresh rate into other rate or adjust the brightness and contrast on the menu until thepicture is clean. If the refresh rate of the PC graphic card can not be changed, change the PC graphic card or consult it to themanufacturer of the PC graphic card.
- The synchronization input form for Horizontal and Vertical frequencies is separate.
Setup Instructions to Connect a PC to your set- We recommend using 640x480, 60Hz for the PC mode, they provide the best picture quality.- If the resolution of PC is over UXGA, there will be no picture on the set.- Connect the signal cable from the monitor output port of the PC to the RGB INPUT port of the set or the signal cable from the DVI
output port of the PC to the DVI INPUT port on the set.- Connect the audio cable from the PC to the Audio input on the set. (Audio cables are not included with the set).- If using a sound card, adjust PC sound as required.- This set apply a VESA Plug and Play Solution. The set provides EDID data to the PC system with a DDC protocol. The PC adjusts
automatically to use this set.- DDC protocol is preset for RGB (Analog RGB), DVI (Digital RGB) mode.- If required, adjust the set settings for Plug and Play functionally.- If graphic card on the PC does not output analog and digital RGB simultaneously, connect only one of both RGB INPUT or DVI
INPUT to display the PC on the set.If graphic card on the PC does output analog and digital RGB simultaneously, set the set to either RGB or DVI; (the other modeis set to Plug and Play automatically by the set.)
- DOS mode may not work depending on video card if using a DVI-I cable.
PC Setup1. Turn on the PC and apply power to the set.2. Turn on the display by pressing the POWER button on the set’s remote control.3. Use the INPUT SELECT or MULTIMEDIA button on the remote control to select the RGB or DVI input source.4. Set the resolution output of the PC to SXGA or under (1280 x 1024, 60Hz). (Refer to p. 12)
Watching DTV Setup (option)
- To watch digitally broadcast programs, purchase/connect a digital set-top box.
How to connect a user-supplied Digital Set-Top Box- Connect DTV set-top box video output to monitor COMPONENT
(DVD/DTV INPUT) or to the monitor RGB (PC/DTV INPUT) or to themonitor DVI (PC/DTV INPUT) connector depending on your set-topbox connectors.
- Optional extras can be changed or modified for quality improvement without any notification new optional extras can beadded.
- Contract your dealer for buying these items.
Optional Extras
AccessoriesAccessories
Tilt wall mounting bracket
404250 40 42 50
Video cables Audio cables
Ceiling mounting bracket
40
4250
42
40
Desktop stand
Speakers
BNC-RCA adapter(optional)
- 12 -
SPECIFICATIONSNOTE : Specifications and others are subject to change without notice for improvement.
V Application RangeThis spec is sheet is applied to the 42” PDP TV used RF-04GC chassis.
V Specification
Each part is tested as below without special appointment.1) Temperature : 25±5°C (77±9°F)2) Relative Humidity: 65±10%3) Power Voltage: Standard Input voltage (100V-240V~, 50/60Hz)
* Standard Voltage of each product is marked by models.4) Specification and performance of each parts are followed each drawing and specification by part number in
accordance with BOM.5) The receiver must be operated for about 20 minutes prior to the adjustment.
V Test and Inspection Method1) Performance : LGE TV test method followed.2) Demanded other specification
1. Application ObjectThis spec sheet is applied all of 42” PDP monitor, RF-04GCchassis by manufacturing LG monitor Plant or sort plants.
2. Specification(1) Because this is not a hot chassis, it is not necessary to
use an isolation transformer. However, the use of isolationtransformer will help protect test instrument.
(2) Adjustment must be done in the correct order.(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity ifthere is no specific designation.
(4) The input voltage of the receiver must keep 100-220V,50/60Hz.
(5) The receiver must be operated for about 15 minutes priorto the adjustment.
O After RGB Full white in HEAT-RUN Mode, the receivermust be operated prior to adjustment.
O Enter into HEAT-RUN MODE1) Press the POWER ON KEY on R/C for adjustment.2) OSD display and screen display 100% full WHITE
PATTERN.
[ Set is activated HEAT-RUN without signal generator inthis mode.
[ Single color pattern(RED/BLUE/GREEN) of HEAT-RUN mode uses to check PANEL.
Caution) If you turn on a still screen more than 20 minutes(Especially digital pattern, cross hatch pattern), a afterimage may be occur in the black level part of thescreen.
3. Channel memory
3-1. Setting up the LGIDS(1) Install the LGIDS. (idsinst.exe)(2) After installation, restart your PC.(3) Extract [files.zip] to folder [c:\LGIDS\files].
(4) Start LGIDS.
3-2. Channel memory Method (1) Select “PDP” and “Hurricane” on Model dialog. And check
your connection in Communication dialog.(If your connection is ‘NG’, then set your PORT(COM1,2,3,...) correctly.)
(2) Connect RS232 cable and turn on the power.
(If your connection has completed, you can see )
[ If your set is not an end products but only a board, youhave to make your board to Stand-by state(LED_R).And you have to Download in Stand-by power state.
(3) Select proper CH_memory file(*.nvm) for each model at[NVRAM Download] $ [Write Batch]Next, select proper binary file(*.bin) including the CHinformation for each model at [NVRAM File].
(4) Click the [Download] button.It means the completion of the CH memory download if allitems show ‘OK’ and Status is changed by ‘PASS’ at thelower right corner of the window.
(5) If you want to check whether the CH information ismemorized correctly or not, click the [Verify] button. And then compare NVRAM File(*.bin) with the CHinformation downloaded.
(Fig. 2)
(Fig. 3)
- 14 -
4. HDCP Download
4-1. LGIDS Setting Method(1) Click on ‘setup’ to install in your directory.(2) After installation is completed, check if the file shown on
(Fig. 4) has been created.(3) Copy the KEY from source CD into the HDCP directory
which was installed just now.(DVI_orderNo_2003_data)
(4) After running HDCP(application program) which is insidethe HDCP directory, setup the Communication.Port : COM1(modification possible)BaudRate : 115200
4-2. KEY Generation
(1) Click on ‘Key Generation (G)’.(2) Input the number of the key in Generation count.
ex) If 100 Keys are required, then just register 100 andnext time it will automatically get 101.
(3) Input file : When installing the program for the first time,you must find the original KEY that you copied and open it. It is crucial that you copy the original KEY into thisdirectory. When you use Generation, the information is recorded inConfig.ini.
(4) Click on ‘Generation’ ———————————————(1)If it is done correctly, you will see “Job is Success.”——(2)Click on ‘close’——————————————————(3)
(5) Check the Generation Data(Confirmation it’s possiblewithin HDCP\CreatedKeyFile)
(6) It is possible to check how many Generations are createdat this point.(Fig. 7) shows that you have created 130 Generations andyou will start from 131 next time.
(Fig. 5)
(Fig. 6)
(Fig. 4)
(Fig. 7)
- 15 -
4-3. HDCP Download Method (1) Input power of Stand-By 5V.
(Download must be executed only when it is on Stand-by)(2) The RS-232C(9PIN) must be connected to the COM1 on
the PC.
(3) If all the preparation is completed, click on ‘Download’.
(4) If abnormal state (Fig. 10) display then (3) execute.
5. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage Adjustments)
5-1. Test Equipment : D.M.M. 1EA
5-2. Connection Diagram for Measuring: Refer to (Fig.11).
5-2. Adjustment method(P/No 3501V00180A B/D)
(1) Va Adjustment1) After receiving 100% Full White Pattern, HEAT RUN.2) Connect + terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.3) After turning RV501, voltage of D.M.M adjustment as
same as Va voltage which on lable of panel right/top(Deviation; ±0.5V)
(2) Vs Adjustment1) Connect + terminal of D.M.M to Vs pin of P805, connect
– terminal to GND pin of P805.2) After turning RV401, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.(Deviation; ±0.5V)
(Fig. 8)
(Fig. 9) Normal State
Each PCB assembly must be checked by check JIG set.(Because power PCB Assembly damages to PDP Module,especially be careful)
(Fig. 10) Abnormal State
Va ADJRV601
P806
P805
P807
Va
GNDNCVS
DMM
+ - P804
P801 P802
Vs ADJRV401
P803
<3501V00180A>
Va ADJRV501
P806
P805
P807
Va
GNDNCVS
DMM
+ - P804
P801 P802
Vs ADJRV401
P803
<3501V00182A>
(Fig. 11) connection diagram of power adjustment for measuring.
- 16 -
5-3. Adjustment method(P/No 3501V00182A)
(1) Va Adjustment1) After receiving 100% Full White Pattern, HEAT RUN.2) Connect + terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.3) After turning RV601, voltage of D.M.M adjustment as
same as Va voltage which on lable of panel right/top(Deviation; ±0.5V)
(2) Vs Adjustment1) Connect + terminal of D.M.M to Vs pin of P805, connect
- terminal to GND pin of P805.2) After turning RV401, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.(Deviation; ±0.5V)
6. DDC Data Input
6-1. Required Test Equipment(1) A j ig for adjusting PC, DDC (PC serial to D-sub
Connection equipment)(2) S/W for writing DDC (EDID Data Write & Read)(3) D-sub 15P Cable, D-Sub to DVI Connector (Connect to
DVI Jack)
6-2. Setting of Device
6-3. Preparation for Adjustment(1) Set devices as above and turn the PC, jig on.(2) Put S/W for writing DDC (EDID data Write & Read) into
operation. (operated in DOS mode.)
6-4. Sequence of Adjustment(1) DDC Data Input for Analog-RGB
1) Put the set on the table and turn the power on.2) Connect PC Serial to D-sub 15P Cable of jig for DDC
adjustment to RGB terminal (D-Sub 15Pin).3) Operate S/W for DDC record and select DDC data for
Analog RGB in Model Menu.4) Operate EDID Write command.5) Operate EDID Read command and check whether
Check Sum is MZ/MT-42PM13(VGA) : CB6) If Check Sum is not CB(VGA), repeat 3) ~ 4).7) If Check Sum is CB(VGA), DDC data for Analog-RGB
input is completed.
(2) DDC Data input for Digital-RGB(DVI)1) Connect PC Serial to DVI Cable of j ig for DDC
adjustment to DVI terminal (DVI Jack).2) Operate S/W for DDC record and select DDC data for
digital RGB in model menu.3) Operate EDID Write command. 4) Operate EDID Read command and check whether
Check sum isMZ/MT-42PM13(VGA) : 4A(1Page), B(2Page)
5) If Check sum is not4A(1 Page), BF(2 Page) for repeat 3) ~ 4).
6) If Check sum is 4A(1 Page), BF(2 Page) for VGA, DDCdata for Analog-RGB input is completed.
7. Adjustment of White Balance
7-1. Required EquipmentColor Analyzer (CA-100 or same product)
7-2. Connection Diagram of Equipment for Measuring
7-3. Adjustment of White BalanceO Operate the Zero-calibration of the CA-100, then stick
sensor to PDP module surface when you adjust.O For manual adjustment, it is also possible by the following
sequence.
(1) Select white pattern of heat-run mode by pressing poweron key on remote control for adjustment then operate heatrun more than 15 minutes.
(2) Supply Gray Pattern (216 level=85IRE Full Size Pattern)signal to PIGGY VIDEO input. (Refer to Fig. 12)
(3) Press the FRONT-AV KEY on R/C for converting inputmode.
(4) To adjust, stick sensor to 216 Gray Level Pattern(85IRE),press ADJ key twice(White Balance) on remote control.For adjustment and D, E on remote control for adjustmentmode to select Red Gain and Green Gain, press VOL +, -Key and adjust it until color coordination becomes asbelow.