Lg 50ps60 series User manual

PLASMA TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : PU92C

MODEL : 50PS60 50PS60-UA

North/Latin America http://aic.lgservice.com

Europe/Africa http://eic.lgservice.com

Asia/Oceania http://biz.lgservice.com

Internal Use Only

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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 the

Schematic Diagram and Exploded View.

It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent

X-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 the

servicing of a receiver whose chassis is not isolated from the AC

power line. Use a transformer of adequate power rating as this

protects the technician from accidents resulting in personal injury

from electrical shocks.

It will also protect the receiver and it's components from being

damaged by accidental shorts of the circuitary that may be

inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this monitor is blown, replace it

with 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 an

electrical jumper across the two AC plug prongs. Place the AC

switch in the on positioin, connect one lead of ohm-meter to the AC

plug prongs tied together and touch other ohm-meter lead in turn to

each exposed metallic parts such as antenna terminals, phone

jacks, etc.

If the exposed metallic part has a return path to the chassis, the

measured resistance should be between 1MΩand 5.2MΩ.

When the exposed metal has no return path to the chassis the

reading must be infinite.

An other abnormality exists that must be corrected before the

receiver 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 capacitor

between a known good earth ground (Water Pipe, Conduit, etc.)

and the exposed metallic parts.

Measure the AC voltage across the resistor using AC voltmeter

with 1000 ohms/volt or more sensitivity.

Reverse plug the AC cord into the AC outlet and repeat AC voltage

measurements for each esposed metallic part. Any voltage

measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA.

In case any measurement is out of the limits sepcified, there is

possibility of shock hazard and the set must be checked and

repaired before it is returned to the customer.

Leakage Current Hot Check circuit

CANADA: LG Electronics Canada, Inc. 550 Matheson

Boulevard East Mississauga, Ontario L4Z 4G3

USA : LG Customer Interactive Center

P.O.Box 240007, 201 James Record Road Huntsville,

AL 35824

Digital TV Hotline 1-800-243-0000

1.5 Kohm/10W

To Instrument's

exposed

METALLIC PARTS

Good Earth Ground

such as WATER PIPE,

CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

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Only for training and service purposes LGE Internal Use Only

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

ADJUSTMENT INSTRUCTIONS ..........................................6

TROUBLE SHOOTING GUIDE...........................................15

BLOCK DIAGRAM...............................................................47

EXPLODED VIEW...............................................................49

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

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

TABLE OF CONTENTS

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Only for training and service purposes LGE Internal Use Only

SPECIFICATIONS

NOTE : Specifications and others are subject to change without notice for improvement

VApplication Range

This spec is applied to the PLASMA TV used PU92A/PU92C Chassis.

V Specification

Each part is tested as below without special appointment.

1) Temperature : 25±5°C

2) Relative Humidity: 65±10%

3) Power Voltage: Standard Input voltage (100-240V~, 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 SBOM.

5) The receiver must be operated for about 20 minutes prior to the adjustment.

VTest Method

1) Performance : LGE TV test method followed.

2) Demanded other specification

Safety : UL, CSA, IEC specification

EMC : FCC, ICES, IEC specification

Chassis

PU92A

PU92C

32PQ1DV-UA

42PQ20-UA

50PQ20-UA

42PQ30-UA

50PQ30-UA

42PQ60-UA

50PQ60-UA

50PS30-UB

50PS60-UA

60PS60-UA

NORTH AMERICA LG

Model Name Market Brand Remark

32PQ1DV-UA

42PQ20-UA

50PQ20-UA

42PQ30-UA

50PQ30-UA

42PQ60-UA

50PQ60-UA

50PS30-UB

50PS60-UA

60PS60-UA

Safety : UL1492, CSA C22.2.No. 1

EMC : FCC Class B, IC Class B

NORTH AMERICA

Model ApplianceMarket Remark

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Only for training and service purposes LGE Internal Use Only

SPECIFICATIONS

VGeneral Specification

No.

Item

Receiving System

Available Channel

Input Voltage

Market

Screen Size

Aspect Ratio

Tuning System

Module

Operating Environment

Storage Environment

Specification

ATSC/64 & 256 QAM/NTSC-M

1) VHF : 02 ~ 13

2) UHF : 14 ~ 69

3) DTV : 02 ~ 69

4) CATV : 01 ~ 135

5) CADTV : 01 ~ 135

1) AC 100 ~ 240V 50/60Hz

2) AC 100 ~ 120V 50/60Hz

NORTH AMERICA

42 inch Wide(1024 X 768)

50 inch Wide(1365 X 768)

60 inch Wide(1365 X 768)

50 inch Wide(1920 X 1080)

60 inch Wide(1920 X 1080)

16 : 9

PDP32F2####(852 X 480)

PDP42G2####(1024 X 768)

PDP50G2####(1365 X 768)

PDP50H3####(1920 X 1080)

PDP60H3####(1920 X 1080)

1) Temp : 0 ~ 40deg

2) Humidity : ~80%

1) Temp : -20 ~ 60deg

2) Humidity : 0 ~ 90%

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Only for training and service purposes LGE Internal Use Only

ADJUSTMENT INSTRUCTIONS

1. Application Range

This spec sheet is applied to all of the “PU92A(HD)” and

“PU92C(FHD)” Chassis.

2. Specification

(1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolation

transformer 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 if

there is no specific designation.

(4) The input voltage of the receiver must keep 100~240V,

50/60Hz.

(5) The receiver must be operated for about 5 minutes prior to

the adjustment when module is in the circumstance of over

15cC

- In case of keeping module is in the circumstance of 0cC,

it should be placed in the circumstance of above 15cC for

2 hours

- In case of keeping module is in the circumstance of below

-20cC, it should be placed in the circumstance of above

15cC for 3 hours.

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

select “White” by using F/G(VOL +/-)

- Set is activated HEAT run without signal generator in this

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), an after

image may be occur in the black level part of the

screen.

Caution: Set up “RF mode(noise)” after PCB assembly adjustment.

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 connect

computer, 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.

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4. ADC Process

4-1. PC Input ADC

(1) Auto RGB Gain/Offset Adjustment

1) 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 displays

Output Voltage : 700 mVp-p

Impress Resolution XGA (1024 x 768 @ 60Hz)

Model, Pattern : Internal pattern of Mstar scaler

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)

0x00 0x02 instruction.

(2) Confirmation

1) 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 more

3) We can confirm the ADC values from “0xB0~0xB5

(RGB)” addresses in a page “0xA2”

[Manual ADC process using Service Remocon. After enter

Service Mode by pushing “ADJ” key, execute “ADC Adjust” by

pushing “G” key at “0. ADC CALIBRATION “.

4-2. COMPONENT Input ADC

(1) Component Gain/Offset Adjustment

1) 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 displays

Impress Resolution 480i

Model, Pattern : Internal pattern of Mstar scaler

3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)

0x00 0x02 instruction

4) Signal equipment displays

Impress Resolution 1080i

Model, Pattern : Internal pattern of Mstar scaler

5) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)

0x00 0x02 instruction

[Manual ADC process using Service Remocon. After enter

Service Mode by pushing “ADJ” key, execute “ADC Adjust” by

pushing “G” key at “0. ADC CALIBRATION”.

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 enter

Service Mode by pushing “INSTART” key.

5. DDC EDID Write Confirmation

Only for training and service purposes LGE Internal Use Only

ADJUSTMENT INSTRUCTIONS

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Caution: Each PCB assembly must be checked by check JIG set.

(Because power PCB Assembly damages to PDP

Module, especially be careful)

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

6. POWER PCB Ass’y Voltage

Adjustment(Va, Vs voltage Adjustment)

6-1. Test Equipment:D.M.M 1EA

6-2. Connection Diagram for Measuring

Refer to Fig.1, Fig 2, Fig 3

6-3. 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)

(5) 60” Va Adjustment (refer fig.3)

1) After receiving 100% Full White Pattern, HEAT RUN.

2) Connect + terminal of D.M.M. to Va pin of P11, connect

-terminal to GND pin of P11.

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)

(6) 60” Vs Adjustment (refer fig.3)

1) Connect + terminal of D. M..M. to Vs pin of P11, connect

-terminal to GND pin of P11.

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)

Only for training and service purposes LGE Internal Use Only

ADJUSTMENT INSTRUCTIONS

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

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

(Fig. 3) 60inch Power PCB Assy Voltage Adjustment

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7. DDC EDID Write

(MODEL NAME: LG TV(Not necessary))

Caution: Please only check write status in Instart-menu

- EDID download is processed automatically through CPU at initial booting

- PC(for communication through RS-232C), UART baud rate: 115200 bps

7-1. HD EDID DATA

(1) RGB EDID DATA

0 1 2 3 4 5 6 7 8 9 A B C D E F

————————————————————————————————————————————

/* 0 */ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x1E, 0x6D, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01,

/* 1 */ 0x00, 0x11, 0x01, 0x03, 0x18, 0x73, 0x41, 0x96, 0x0A, 0xCF, 0x74, 0xA3, 0x57, 0x4C, 0xB0, 0x23,

/* 2 */ 0x09, 0x48, 0x4C, 0xAF, 0xCF, 0x00, 0x31, 0x40, 0x45, 0x40, 0x61, 0x40, 0x81, 0x80, 0xA9, 0x40,

/* 3 */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xB0, 0x51, 0x00, 0x1B, 0x30, 0x40, 0x70,

/* 4 */ 0x36, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38, 0x2D, 0x40,

/* 5 */ 0x58, 0x2C, 0x45, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x30,

/* 6 */ 0x4B, 0x1F, 0x64, 0x11, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC,

/* 7 */ 0x00, 0x4C, 0x47, 0x20, 0x54, 0x56, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xFF,

/* 8 */ 0x02, 0x03, 0x04, 0x00, 0x0E, 0x1F, 0x00, 0x80, 0x51, 0x00, 0x1E, 0x30, 0x40, 0x80, 0x37, 0x00,

/* 9 */ 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1C, 0xF1, 0x27, 0x00, 0xA0, 0x51, 0x00, 0x25, 0x30, 0x50, 0x80,

/* a */ 0x37, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

/* b */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

/* c */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

/* d */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

/* e */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

/* f */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x31,

(2) HDMI-1 EDID DATA

0 1 2 3 4 5 6 7 8 9 A B C D E F

————————————————————————————————————————————

/* 0 */ 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x1E, 0x6D, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01,

/* 1 */ 0x00, 0x11, 0x01, 0x03, 0x80, 0x73, 0x41, 0x96, 0x0A, 0xCF, 0x74, 0xA3, 0x57, 0x4C, 0xB0, 0x23,

/* 2 */ 0x09, 0x48, 0x4C, 0xAF, 0xCF, 0x00, 0x31, 0x40, 0x45, 0x40, 0x61, 0x40, 0x81, 0x80, 0xA9, 0x40,

/* 3 */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xB0, 0x51, 0x00, 0x1B, 0x30, 0x40, 0x70,

/* 4 */ 0x36, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38, 0x2D, 0x40,

/* 5 */ 0x58, 0x2C, 0x45, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0xFD, 0x00, 0x30,

/* 6 */ 0x4B, 0x1F, 0x64, 0x11, 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFC,

/* 7 */ 0x00, 0x4C, 0x47, 0x20, 0x54, 0x56, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0x97,

/* 8 */ 0x02, 0x03, 0x1B, 0xF1, 0x47, 0x84, 0x05, 0x03, 0x02, 0x20, 0x22, 0x10, 0x26, 0x15, 0x07, 0x50,

/* 9 */ 0x09, 0x07, 0x07, 0x67, 0x03, 0x0C, 0x00, 0x10, 0x00, 0xB8, 0x2D, 0x01, 0x1D, 0x00, 0x72, 0x51,

/* a */ 0xD0, 0x1E, 0x20, 0x6E, 0x28, 0x55, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x1E, 0x01, 0x1D, 0x80,

/* b */ 0x18, 0x71, 0x1C, 0x16, 0x20, 0x58, 0x2C, 0x25, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00, 0x9E, 0x8C,

/* c */ 0x0A, 0xD0, 0x8A, 0x20, 0xE0, 0x2D, 0x10, 0x10, 0x3E, 0x96, 0x00, 0xC4, 0x8E, 0x21, 0x00, 0x00,

/* d */ 0x18, 0x8C, 0x0A, 0xD0, 0x8A, 0x20, 0xE0, 0x2D, 0x10, 0x10, 0x3E, 0x96, 0x00, 0x13, 0x8E, 0x21,

/* e */ 0x00, 0x00, 0x18, 0x0E, 0x1F, 0x00, 0x80, 0x51, 0x00, 0x1E, 0x30, 0x40, 0x80, 0x37, 0x00, 0xC4,

/* f */ 0x8E, 0x21, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBD,

Only for training and service purposes LGE Internal Use Only

ADJUSTMENT INSTRUCTIONS

- 10 -

Only for training and service purposes LGE Internal Use Only

(3) HDMI-2 EDID DATA