MFL42027505_01.pdf

PLASMA TVSERVICE MANUAL

CAUTIONBEFORE SERVICING THE CHASSIS,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : PU84A

MODEL : 50PG10 50PG10-UA

CANADA : http//biz.lgservice.comUSA : http//www.lgservice.com

: http//biz.lgservice.com

Internal Use Only

- 2 -Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

LGE Internal Use Only

SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in theSchematic 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 to preventX-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

An lsolation Transformer should always be used during theservicing of a receiver whose chassis is not isolated from the ACpower line. Use a transformer of adequate power rating as thisprotects the technician from accidents resulting in personal injuryfrom electrical shocks.

It will also protect the receiver and it's components from beingdamaged by accidental shorts of the circuitary that may beinadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this monitor is blown, replace itwith the same specified type.

When replacing a high wattage resistor (Oxide Metal Film Resistor,over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Leakage Current Cold Check(Antenna Cold Check)With the instrument AC plug removed from AC source, connect anelectrical jumper across the two AC plug prongs. Place the ACswitch in the on positioin, connect one lead of ohm-meter to the ACplug prongs tied together and touch other ohm-meter lead in turn toeach exposed metallic parts such as antenna terminals, phonejacks, 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 AC voltmeterwith 1000 ohms/volt or more sensitivity.Reverse plug the AC cord into the AC outlet and repeat AC voltagemeasurements for each esposed metallic part. Any voltagemeasured must not exceed 0.75 volt RMS which is corresponds to0.5mA.In case any measurement is out of the limits sepcified, there ispossibility of shock hazard and the set must be checked andrepaired before it is returned to the customer.

Leakage Current Hot Check circuit

CANADA: LG Electronics Canada, Inc. 550 MathesonBoulevard East Mississauga, Ontario L4Z 4G3

USA : LG Customer Interactive CenterP.O.Box 240007, 201 James Record Road Huntsville,AL 35824Digital TV Hotline 1-800-243-0000

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



SPECIFICATIONS.................................................................4

ADJUSTMENT INSTRUCTIONS ..........................................5

TROUBLE SHOOTING GUIDE...........................................11

BLOCK DIAGRAM...............................................................41

EXPLODED VIEW...............................................................44

EXPLODED VIEW PARTS LIST .........................................45

SCHEMATIC DIAGRAM..........................................................

PRINTED CIRCUIT BOARDS.................................................

TABLE OF CONTENTS



The specifications shown above may be changed without prior notice for quality improvement.

MODELS

AC100-240V ~ 50/60HzNTSC-M, ATSC, 64 & 256 QAM

VHF 2-13, UHF 14-69, CATV 1-135, DTV 2-69, CADTV 1-13575 ohm

32 ~ 104°F (0 ~ 40°C)Less than 80%

-4 ~ 140°F (-20 ~ 60°C)Less than 85%

Dimensions(Width x Height x Depth)

Weight

Power requirementTelevision SystemProgram CoverageExternal AntennaImpedance

Environment condition

With stand

Without stand

With standWithout stand

OperatingTemperatureOperating Humidity

Storage TemperatureStorage Humidity

42PG20 (42PG20-UA)42PG20C (42PG20C-UA)

50PG20 (50PG20-UA)50PG20C (50PG20C-UA)

MODELS 50PG30(50PG30F-UA)

60PG30(60PG30F-UA)

41.3 x 30.2 x 12.2 inches1048.0 x 766.0 x 310.0 mm

41.3 x 28.1 x 3.3 inches1048.0 x 713.0 x 83.5 mm

61.7 pounds / 28.0 kg54.2 pounds / 24.6 kg

48.9 x 34.9 x 14.6 inches1242.0 x 887.6 x 370.0 mm

48.9 x 32.6 x 3.5 inches1242.0 x 827.2 x 88.0 mm



Weight

With stand

Without stand


48.9 x 34.9 x 14.6 inches1242.0 x 887.6 x 370.0 mm

48.9 x 32.6 x 3.5 inches1242.0 x 827.2 x 88.0 mm


57.3 x 38.8 x 16.3 inches1455.0 x 985.0 x 414.0 mm57.3 x 38.5 x 15.8 inches1455.0 x 914.8 x 82.8 mm


MODELS 50PG60(50PG60F-UA)

60PG60(60PG60F-UA)


Weight

With stand

Without stand


48.9 x 34.9 x 14.6 inches1242.0 x 887.6 x 370.0 mm

48.9 x 32.6 x 3.5 inches1242.0 x 827.2 x 88.0 mm


57.3 x 38.8 x 16.3 inches1455.0 x 985.0 x 414.0 mm57.3 x 38.5 x 15.8 inches1455.0 x 914.8 x 82.8 mm


SPECIFICATIONS



ADJUSTMENT INSTRUCTIONS

1. Application RangeThis spec. sheet is applied to all of the PU84A chassis.

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±5cC of temperature and 65±10% of relative humidity ifthere is no specific designation.

(4) The input voltage of the receiver must keep 100~240V,50/60Hz.Caution : 42PG20-UA must keep 100 ~ 120V, 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 receiver mustbe operated prior to the adjustment.

O Enter into HEAT-RUN MODE(1) Press the POWER ON KEY on R/C for adjustment.(2) Press the ADJ KEY on R/C and enter EZ ADJUST

Select “4. White Pattern” by using D/E(CH +/-) and pressENTER(V)Select “White” by using F /G (VOL +/-) and pressENTER(V)

- Set is activated HEAT run without signal generator in thismode.

- Single color pattern ( RED / BLUE / GREEN ) of HEAT RUNMODE uses to check panel.

Caution: If you turn on a still screen more than 20 minutes(Especially digital pattern, cross hatch pattern), an afterimage may be occur in the black level part of thescreen.

3. Download(1) Execute ISP program “Mstar ISP Utility” and then click

“Config” tab.(2) Set as below, and then click “Auto Detect” and check “OK”

message If display “Error”, Check connect computer, jig,and set.

(3) Click “Connect” tab. If display “Can’t” , Check connectcomputer, jig, and set.

(4) Click “Read” tab, and then load download file(XXXX.bin)by clicking “Read”

(5) Click “Auto” tab and set as below(6) Click “Run”.(7) After downloading, check “OK” message.

- 6 -

4. ADC Process

4-1. PC Input ADC

(1) Auto RGB Gain/Offset Adjustment1) Convert to PC in Input-source

I2C COMMAND: 0xF4 (SELECT_INPUT) 0x00 0x60(RGB)cf. 0x10(TV), 0x20(AV), 0x40(COMPONENT),0x60(RGB), 0x90(HDMI)

2) Signal equipment displaysOutput Voltage : 700 mVp-pImpress Resolution XGA (1024 x 768 @ 60Hz) Model : 60 in Pattern GeneratorPattern : 65 in Pattern Generator (MSPG-925 SERISE) [gray pattern that left & right is black and center is whitesignal (Refer below picture)].

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)0x00 0x02 instruction.

(2) Confirmation1) We confirm whether “0xB6(RGB)” address of EEPROM

“0xA2” is “0xAA” or not. 2) If “0xB6(RGB)” address of EEPROM “0xB2” isn’t “0xAA”,

we adjust once more3) We can confirm the ADC values from

“0xB0~0xB5(RGB)” addresses in a page “0xA2”

[ Manual ADC process using Service Remocon. After enterService Mode by pushing “ADJ” key, execute “ADC Adjust” bypushing “G” key at “0. ADC CALIBRATION “.

4-2. COMPONENT Input ADC

(1) Component Gain/Offset Adjustment1) Convert to Component in Input-source

I2C COMMAND : 0xF4 (SELECT_INPUT) 0x00 0x40(COMPONENT)cf. 0x10(TV), 0x20(AV), 0x40(COMPONENT),0x60(RGB), 0x90(HDMI)

2) Signal equipment displaysImpress Resolution 480iMODEL : 209 in Pattern Generator(480i Mode)PATTERN : 65 in Pattern Generator(MSPG-925 SERISE)

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)0x00 0x02 instruction

4) Signal equipment displaysImpress Resolution 1080iMODEL : 223 in Pattern Generator(1080i Mode)PATTERN : 65 in Pattern Generator(MSPG-925 SERISE)

5) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)0x00 0x02 instruction

[ Manual ADC process using Service Remocon. After enterService Mode by pushing “ADJ” key, execute “ADC Adjust” bypushing “G” key at “0. ADC CALIBRATION”.

Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes



Adjustment pattern (RGB, COMPONENT)

- 7 -

4-3. Confirmation(1) We confirm whether “0xBF(480i)/0xC8(1080i)” address of

EEPROM “0xA2” is “0xAA” or not. (2) If “0xBF(480i)/0xC8(1080i)” address of EEPROM “0xA2”

isn’t “0xAA”, we adjust once more(3) We can confirm the ADC values from “0xB9 ~ 0xBE(480i) /

0xC2 ~ (1080i)” addresses in a page “0xA2”

[ Manual ADC Confirmation using Service Remocon. After enterService Mode by pushing “INSTART” key.

Caution: Each PCB assembly must be checked by check JIG set.(Because power PCB Assembly damages to PDPModule, especially be careful)

Caution: Set up “RF mode(noise)” before voltage adjustment.

5. POWER PCB Ass’y Voltage Adjustment (Va, Vs voltage Adjustment)

5-1. Test Equipment: D.M.M 1EA

5-2. Connection Diagram for MeasuringRefer to Fig.1, Fig 2

5-3. Adjustment Method

(1) 50” Va Adjustment (refer fig.1)1) After receiving 100% Full White Pattern, HEAT RUN.2) Connect + terminal of D.M.M. to Va pin of P802,

connect-terminal to GND pin of P802.3) After turning VR902,voltage of D.M.M adjustment as

same as Va voltage which on label of panel right/top(deviation; ±0.5V)

(2) 50” Vs Adjustment (refer fig.1)1) Connect + terminal of D.M.M. to Vs pin of P802, connect

-terminal to GND pin of P802.2) After turning VR901, voltage of D.M.M adjustment as

same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)

(3) 42” Va Adjustment (refer fig.2) 1) After receiving 100% Full White Pattern, HEAT RUN.2) Connect + terminal of D.M.M. to Va pin of P811, connect

-terminal to GND pin of P811.3) After turning VR901,voltage of D.M.M adjustment as

same as Va voltage which on label of panel right/top(deviation; ±0.5V)

(4) 42” Vs Adjustment (refer fig.2)1) Connect + terminal of D. M..M. to Vs pin of P811,

connect -terminal to GND pin of P811.2) After turning VR951, voltage of D.M.M adjustment as

same as Vs voltage which on label of panel right/top(deviation ; ±0.5V)




(Fig. 1) 50inch Power PCB Assy Voltage Adjustment

(Fig. 2) 42inch Power PCB Assy Voltage Adjustment

- 8 -

6. DDC EDID Write (MODEL NAME: LG TV)

Caution: Press the POWER ON KEY on R/C before EDID download.

EDID download is processed automatically through RS-232CPC(for communication through RS-232C), UART baud rate:115200 bps

O EDID Download Protocol (RS-232C)

O HDMI-1 EDID DATA

O HDMI-2 EDID DATA

O HDMI-3 EDID DATA

O RGB EDID DATA




- 9 -

7. Adjustment of White Balance

Caution: Press the POWER ON KEY on R/C before W/B adjustment.

7-1. Test Equipment- Color Analyzer (CS-1000, CA-100+(CH.10), CA-210(CH.10))

[ Please adjust CA-100+ / CA-210 by CS-1000 before measuring--> You should use Channel 10 which is Matrix compensated

(White, Red, Green, Blue revised) by CS-1000 and adjustin accordance with White balance adjustment coordinate.

O Color temperature standards according to CSM and Module

O Change target luminance and range of the Auto adjustmentW/B equipment.

O White balance adjustment coordinate and color temperature

7-2. Connecting Picture of the Measuring Instrument (On Automatic control )

Inside PATTERN is used when W/B is controlled. Connect toauto controller or push control R/C ADJ Key—> Enter themode of White-Balance, the pattern will come out.

7-3. Auto-control Interface and Directions(1) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10ux).(2) In case of PDP: Measure and adjust after sticking the Color

Analyzer (CA-100+, CA210) to the side of the module.

In case of LCD: Adhere closely the Color Analyzer (CA210 ) to the module less than 10cm distance, keep itwith the surface of the Module and Color Analyzer’s Provevertically.(80~100°).

(3) Aging time 1) After aging start, keep the power on (no suspension of

power supply) and heat-run over 15 minutes.2) In case of PDP, keep white pattern using inside pattern.3) In case of LCD, using ’no signal’ or ‘full white pattern’ or

the others, check the back light on.

O Auto Adjustment Map(RS-232C)

7-4. Manual White Balance 1) Press the ADJ KEY on R/C and enter EZ ASJUST

Select “3. Test Pattern” by using D/E(CH +/-) and pressENTER(V)Select “White” by using F /G (VOL +/-) and pressENTER(V) and heat run over 15 minutes.

2) Zero Calibrate CA-100+ / CA-210, and when controlling,stick the sensor to the center of PDP module surface.

3) Press the ADJ KEY on R/C and enter EZ ASJUSTSelect “2. White Balance” and press G(VOL +)Set test-pattern on and display inside pattern.

4) Control is carried out on three color temperatures, COOL,MEDIUM, WARM. (Control is carried out three times)

<Temperature: COOL>- R-Cut / G-Cut / B-Cut is set to 64- Control R-Gain and G-Gain.- Each gain is limited to 192

<Temperature: MEDIUM>- R-Cut / G-Cut / B-Cut is set to 64- Control R-Gain and G-Gain.- Each gain is limited to 192




- 10 -

<Temperature: WARM>- R-Cut / G-Cut / B-Cut is set to 64- Control G-Gain and B-Gain.- Each gain is limited to 192

8. HDCP(High-Bandwidth DigitalContents Protection) SETTING

(1) Connect D-sub Signal Cable to D-Sub Jack(2) Input HDCP key with HDCP-key- in-program(3) HDCP Key value is stored on EEPROM(AT24C512) which

is 80~A1 addresses of 0xA0~0xA2 page(4) AC off/ on and on HDCP button of MSPG925 and confirm

whether picture is displayed or not of using MSPG925(5) HDCP Key value is different among the sets.

9. RS-232C Press In-start key and select 3.Baud Rate menu. Check RS-232C after changing Baud Rate 115200.

10. OPTION(1) Press ADJ R/C In-start key and select 0.AREA OPTION(2) Select Country by using F/G(VOL +/-) in accordance with

destination






TROUBLE SHOOTING GUIDE




Power-Up Boot Fail Trouble Shooting

Check P701 AllVoltage Level (16V, 5V)

Check Power connectorOK ?

Replace Power board

Y

N Y

Check IC706 #2 PinVoltage Level 2.6V

Replace IC706 &Recheck

Y

N

Check X100 Clock12MHz

Replace 100

Y

N

Replace IC105 Flash Memory

Check Q706 OutputVoltage Level (5V)

Replace Q801N

Y







No OSD Trouble Shooting

Check P302#33(TXAC-) , #32(TXAC+) ,#17(TXBC-) , #16(TXBC+)

Maybe Mstar has problems

Check LVDS Cable

Check PDP ModuleControl board

Refer to Module CAS

Y

N

Y

Replace CableN

Y

Check PDP Vs,Va VoltageModule 5V Replace PowerN

Check P701 Disp_EN,VaVs ON, 5V_MNT Check GPIO PathN

Y




No OSD Trouble Shooting (Module Power Sequence)

Normal Display

Vcc(5V)

Va

Vs

DISPEN

TVaR

TVsR

TOn

TVaF

TVsF

TOff

1)

Power_on

3 Sec

Power_off

3 Sec

Min100ms

Min.2Frame (Recommend: 2 sec)

msec50090Falling Time of Vs (90% to 10%)TVsF

msec2000600Time interval between 90% of Vcc and 90% of Vs

when Power OnTon +TVsR

msec800100Rising Time of Vs (10% to 90%)TVsR

msec30050Falling Time of Va (90% to 10%)TVaF

msec30010Rising Time of Va (10% to 90%)TVaR

msec-20Time interval between 10% of Vs and 90% of Vcc

when Power OffTOff

msec-500Time interval between 90% of Vcc and 10% of Vs

when Power OnTOn

unitMax.Min.DescriptionSymbol




Module Control Trouble Shooting

Check the PDP Module ControlBoard

Replace Module Control BoardN

Y

Check the IIC To II C Test- Debug Menu IIC Test

Remove R330, R334Check each IC sharing

IIC channel

N

Check P302 SCL,SDA line SCL,SDAline R330, R334 Check SignalN

Y

SCL (continue)

SDA (continue)

ACKBy Slave

9 1

D0D7

9

ACKBy Slave

Command Datafor Addr

StopBy Master

D6

SCL8

SDA 0 0 1 1 1 A7W

StartBy

Master

Chip ID Address Byte(0x1C)

ACKBy Slave

0

1 9 1

A6 A1 A0

Command AddressAddr=A[7:0]

0

Writeonly

Master : Image BoardSlave : PDP Module







Digital TV Video Trouble Shooting

Check RF Cable

Check TP Clock, Data, SyncR440, R441, R442

Maybe Tuner(TU400) has problems

Check Mstar LVDS output#33(TXAC-) , #32(TXAC+) ,#17(TXBC-) , #16(TXBC+)

Y

N

Check Tuner 5V PowerIC703 #5 Pin

Replace IC703

Y

N

Y

Maybe Mstar(IC100) has problemsN

Y

Check LD400 color Bad Tuner. Replace Tuner.

None

Yellow --> none

Check Demodulator Input ClockX400 (25MHz)

Replace itN

Y

Check PDP ModuleControl board

Refer to Module CAS







Analog TV Video Trouble Shooting

Check RF Cable

Check CVBS signalTU400 #16 Pin

Maybe Tuner(TU400) has problems

Check CVBS signalC112

Y

N

Check Tuner 5V PowerIC703 #5 Pin

Replace it

Y

N

Y

Replace itN

Y

Maybe Mstar(IC100) has problems







Component Video Trouble Shooting

Check signal formatIs it supported?

Check signalC833, C834, C835, C838, C839, C840

Replace it.

Check signal IC601 outputR631, R632, R633

Y

Y

N

Check JK602 / JK603 Replace connector

Y

N

Y

Replace itN


Y

Check Component Cable







RGB Video Trouble Shooting


Check signal, Hsync, VsyncR673, R674

Replace it.

Check signalR678, R679, R680

Y

Y

N

Check JK607 Replace connector

Y

N

Y

Replace it.N


Y

Check SignalC116, C124, C126

Replace itN

Check RGB Cable

Y







AV Video Trouble Shooting


Check signalC948 (Composite), C991 / C992 (S-Video) (Rear)

C949 (Composite)Replace it.

Check signalC111 (Composite), C109 / C110 (S-Video) (Rear)

C174 (Composite) (Side)

Y

N

Check JK601 (Rear)Check JK604 (Side)

Replace connector

Y

N

Y

Replace itN


Y

Check AV Cable / S-Video Cable

Y






TROUBLE SHOOTING GUIDEH

DM

I Vid

eo T

rou

ble

Sh

oo

tin

g

Che

ck s

igna

l for

mat

Is it

sup

port

ed?

Y

Che

ck J

801

/ J80

2 / J

803

Rep

lace

con

nect

or

Y

N

Y

Che

ck H

DM

I Cab

le

Che

ck E

DID

NV

RA

M(I

C80

1, 8

02, 8

04)

Pow

er &

I2C

Sig

nal (

#5, #

6)

Rep

lace

it o

r re

-dow

nloa

d

Y

N

Che

ck H

DC

P K

ey N

VR

AM

(IC

102)

Pow

er &

I2C

Sig

nal (

#5, #

6)R

epla

ce it

Y

N

Che

ck IC

803

Out

Vol

tage

Lev

el3.

3VR

epla

ce it

Y

N

Che

ck L

802

Vol

tage

Lev

el 3

.3V

Rep

lace

it

Y

N

Che

ck IC

803

Clo

ck S

igna

l#2

6, #

27R

epla

ce it

Y

NM

aybe

Mst

ar(I

C10

0) h

as p

robl

ems







All Source Audio Trouble Shooting

Make sure you cant hear any audio

Check SignalL919, L920

Replace it.

Check SignalL509, L510, L511, L512

Y

N

Check IC502 Power 16V, 3.3V, 1.8V Re-check

Y

N

Y

Replace itN

Check ConnectorJK501

Y

Check Mstar I2S OutputR1035, R1037, R1038

Y

Replace it.N

Replace connectorN

Check speaker

Y

Replace speakerN

Maybe NTP3000A has problems. Replace it

Y







Digital TV Audio Trouble Shooting

Check video output

Follow procedure All source audio troubleshooting

Y

Follow procedure digital TV videotrouble shooting

N

N Maybe Mstar internal audio DSP hasproblems. Replace it







Analog TV Audio Trouble Shooting

Check video output


Y

Follow procedure analog TV videotrouble shooting

N

N Maybe Mstar audio block has problems.Replace it

Check L400, L402 voltage level 5V Replace itN

Y

Check SIF buffer signal Replace itN

Y

Check SIF signalC409

Replace itN

Y






TROUBLE SHOOTING GUIDEC

om

po

nen

t / R

GB

/ A

V A

ud

io T

rou

ble

Sh

oo

tin

g

Che

ck v

ideo

out

put

Y

Fol

low

pro

cedu

re e

xter

nal

inpu

t vid

eo tr

oubl

e sh

ootin

gN

Che

ck C

onne

ctor

JK60

2 / J

K60

3 (C

ompo

nent

)JK

607

(RG

B)

JK60

1 / J

K60

4 (A

V R

ear,

AV

Sid

e)

Rep

lace

con

nect

orN

Y

Che

ck s

igna

lR

618

/ R61

9 (C

ompo

nent

1)R

645

/ R64

6 (C

ompo

nent

2)R

654

/ R65

5 (R

GB

)R

6092

/ R

6094

(A

V R

ear)

R60

90 /

R60

96 (

AV

Sid

e)

Rep

lace

itN

Y

Che

ck IC

602

pow

er #

14pi

n#14

pin

vol

tage

leve

l 5V

Rep

lace

itN

Y

Che

ck A

udio

out

sig

nal

IC60

2 #2

,3 #

9,10

Rep

lace

it o

r IC

602

N

Y

Che

ck IC

100

sign

alC

102,

C10

3, C

104,

C10

5, C

176,

C18

2R

epla

ce it

N

Y

Che

ck I2

S s

igna

lR

1035

, R10

37, R

1038

Rep

lace

it o

r IC

100

N

Y

Che

ck A

udio

clo

ckR

1036

Rep

lace

itN

Y

May

be M

star

has

pro

blem

s







HDMI Audio Trouble Shooting

Check video output


Y

Follow procedure HDMI video troubleshooting

N

N Maybe Mstar audio block has problems.Replace it

Check EDID NVRAM (IC801, 802, 804)Power & I2C Signal (#5, #6)

Replace it or re-download

Y

N







USB Trouble Shooting

Check USB 2.0 Cable

Check L801 voltage level 5V

Y

N Replace it

Check JK804 Replace it

Y

N

Check USB DeviceIf device is 2.5 inch HDD,

Do not connect, only upgrade

Y

Maybe Mstar has problems

Y

¥ Exception

- USB power could be disabled by inrushing current

- In this case, remove the device and try to reboot the TV (AC power off/on)



BLOCK DIAGRAM



BLOCK DIAGRAMP

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IC

100

L

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1854

C

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DD

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3.3V

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3.3V

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DD

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3.3V

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DD

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3.3V

_AV

DD

_SIF

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VD

D_A

U+

3.3V

_AV

DD

_ME

MP

LL+

3.3V

_AV

DD

_LP

LL

TU

400

LGIT

TU

NE

R

IC10

5F

lash

Mem

ory

S25

Fl0

64A

IC20

0, 2

01D

DR

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HY

5DU

5616

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TP

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IRIC

102

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Reg

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16V

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DIO

IC70

3M

P23

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S

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NE

R12

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Q70

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I386

5BD

V

+5V

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NE

RA

L+

5V_S

TIC

708

AZ

1117

H-

3.3V

+3.

3V_M

ULT

I

IC70

6A

Z10

85S

+2.

6V_M

VD

D

+2.

6V_V

DD

_DD

R

IC70

5A

Z10

85S

+3.

3V_V

DD

P_S

TIC

709

AZ

1085

S-A

dj

+1.

25V

IC70

2S

C15

6515

M

+3.

3V_P

VS

BIC

701

SC

4215

IS+

1.2V

_PV

SB

IC71

5M

6232

0FP

IC80

5A

Z11

17-3

.3V

IC80

3T

MD

S35

1PA

G

+3.

3V_M

ST

IC80

1,2,

4A

T24

C02

*3ea

IC60

1S

TM

AV

340

IC60

274

HC

4066

IC60

3M

AX

3232

IC60

4A

T24

C02

IC50

2N

TP

3000

A

IC50

1A

Z11

17H

-1.

8V

+1.

8V_N

TP

+1.

25V

_AV

DD

_DV

I

+1.

25V

_VD

DC

IC10

4R

eset

trig

er74

LVC

14A

PW

12 17

56 19 20

9

4 812

16V

12V

5VS

T

AC

_DE

T

VA

VS

_ON

M5V

_ON

GN

D

5V_M

NT

RL_

ON

18 21

3 7

14 1613 15

+2.

6V_V

DD

_DD

R+

1.25

V_V

DD

C+

1.25

V_A

VD

D_D

VI

$0.3

$0.1

$0.3

$0.0

7

$0.2

6

$0.0

8

$0.1

3

$0.1

3

$1.3

6

$4.5

$0.0

5

$0.1

3

$0.3

5

$0.0

5

$0.0

7

$1.3

1

$0.1

3

$0.0

6

$0.8

2

$7.9

$

IC40

0LG

DT

3304

+3.

3V_D

VD

D+

3.3V

_AV

DD

+1.

2V_D

VD

D$2

.55

$0.2

$0.0

5

$0.7

4

US

B



NOTES



EXPLODED VIEW

400

240

250

202

302

203

501

520

303

602

209

580

208

207

200

305

300

120

310

560

301

570

601

603

201

204

205

206

590

900

A10

LV1A2







MAIN(TOP) MAIN(BOTTOM) CONTROL(TOP)

CONTROL(BOTTOM)

PRE AMP(TOP) PRE AMP(BOTTOM)

April, 2008Printed in KoreaP/NO : MFL42027505

CANADA: LG Electronics Canada, Inc. 550 MathesonBoulevard East Mississauga, Ontario L4Z 4G3

USA : LG Electronics Alabama, Inc.P.O.Box 240007, 201 James Record Road Bldg 3Huntsville, AL 35824

MFL42027505_01.pdf

Documents

ac cord

ac outlet

ac source

ac voltmeterwith

ac plug prongs

instrument ac plug

exposed metallic parts

mechanical parts