LG 32PG6000 Schematic

PLASMA TV

SERVICE MANUAL

CAUTION

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

CHASSIS : PD81A

MODEL : 32PG6000 32PG6000-ZA

website:http://biz.LGservice.com

Internal Use Only

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Only for training and service purposes

CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ..........................................................................3

SPECIFICATION........................................................................................4

ADJUSTMENT INSTRUCTION .................................................................7

TROUBLE SHOOTING............................................................................12

BLOCK DIAGRAM...................................................................................21

EXPLODED VIEW .................................................................................. 30

SVC. SHEET ...............................................................................................

PRINTED CIRCUIT DIAGRAM....................................................................

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Only for training and service purposes

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 Replacement Parts List. 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 isolation 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 circuitry that may be inadvertently introduced during the service operation.

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

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.

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 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 1MΩ and 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 exposed 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 specified, 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

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

SPECIFICATIONS

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

V Application Range

This spec is applied to the PD81A Chassis.

V Specification

Each part is tested as below without special appointment.

1) Temperature : 25±5°C (77±9°F), CST : 40±5

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.

V Test Method

1) Performance : LGE TV test method followed.

2) Demanded other specification

Safety : CE, IEC specification EMC : CE, IEC specification

V Module General Specification

(1) 50” WXGA Module

Display Screen Device Aspect Ratio PDP Module

Operating Environment

Storage Environment

Input Voltage

1 2 3

No Item Specification Remark

50 inch Wide Color Display Module 16:9 PDP50G1####, RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1365 horiz. By 768 ver.

1) Temp. : 0 ~ 40 deg

2) Humidity : 20 ~ 80 %

3) Temp. : -20 ~ 60 deg

4) Humidity : 10 ~ 90 % 100-240V~, 50/60Hz

PDP

LGE SPEC.

Maker LG

Chassis

PD81A 50PG6000/42PG6000/

32PG6000/50PG7000/

60PG7000/50PG4000

Austria,Belgium,Bulgaria,Coratia,Czech,Denmark,Finland,France,Germa

ny,Greece,Hungary,Italy,Luxembourg,

Netherlands,Norway,Poland,Portugal,Rumania,Russia,

Serbia,Slovenia,Spain,Sweden,Switzerland,UK,Morocco,Turkey

Model Name Market Brand

50PG6000/42PG6000/ 32PG6000/50PG7000/

60PG7000/50PG4000

Safety : IEC/EN60065 EMI : EN55013 EMS : EN55020

Austria,Belgium,Bulgaria,Coratia,Czech,Denmark,Finland,France,

Germany,Greece,Hungary,Italy,Luxembourg,

Netherlands,Norway,Poland,Portugal,Rumania,Russia,

Serbia,Slovenia,Spain,Sweden,Switzerland,UK,Morocco,Turkey

Model ApplianceMarket

(2) 42” XGA Module

(3) 50” FHD Module

(4) 60” FHD Module

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Only for training and service purposes

Display Screen Device Aspect Ratio PDP Module

Operating Environment

Storage Environment

Input Voltage

1 2 3

No Item Specification Remark

42 inch Wide Color Display Module 16:9 PDP42G1####, RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1024 horiz. By 768 ver.

1) Temp. : 0 ~ 40 deg

2) Humidity : 20 ~ 80 %

3) Temp. : -20 ~ 60 deg

4) Humidity : 10 ~ 90 % 100-240V~, 50/60Hz

PDP

LGE SPEC.

Maker LG

Display Screen Device Aspect Ratio PDP Module

Operating Environment

Storage Environment

Input Voltage

1 2 3

No Item Specification Remark

50 inch Wide Color Display Module 16:9 PDP50H2####, RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1920 horiz. By 1080 ver.

1) Temp. : 0 ~ 40 deg

2) Humidity : 20 ~ 80 %

3) Temp. : -20 ~ 60 deg

4) Humidity : 10 ~ 90 % 100-240V~, 50/60Hz

PDP

LGE SPEC.

Maker LG

Display Screen Device Aspect Ratio PDP Module

Operating Environment

Storage Environment

Input Voltage

1 2 3

No Item Specification Remark

60 inch Wide Color Display Module 16:9 PDP60H2####, RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1920 horiz. By 1080 ver.

1) Temp. : 0 ~ 40 deg

2) Humidity : 20 ~ 80 %

3) Temp. : -20 ~ 60 deg

4) Humidity : 10 ~ 90 % 100-240V~, 50/60Hz

PDP

LGE SPEC.

Maker LG

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Only for training and service purposes

V Model General Specification

Market

Broadcasting system

Receiving system

Scart Jack(2EA)

Video Input (1EA) S-Video Input (1EA) Component Input (1EA) RGB Input HDMI Input(4EA)

Audio Input (3EA) SPDIF Out(1EA) USB

5 6 7 8 9

10 11 12

No Item Specification Remark

Austria,Belgium,Bulgaria,Coratia,Czech,Denmark,Finland ,France,Germany,Greece,Hungary,Italy,Luxembourg, Netherlands,Norway,Poland,Portugal,Rumania,Russia, Serbia,Slovenia,Spain,Sweden,Switzerland,UK,Morocco, Turkey

1) PAL/SECAM BG

2) PAL/SECAM DK

3) PAL I / II

4) SECAM L/L’

5) DVB T Analog : Upper Heterodyne Digital : COFDM PAL, SECAM

PAL, SECAM, NTSC PAL, SECAM, NTSC Y/Cb/Cr, Y/Pb/Pr RGB-PC HDMI-PC HDMI-DTV RGB/DVI Audio, Component, AV SPDIF OUT For SVC, S/W Download, X-Studio

27 Country

EU(PAL Market)

Scart1 Jack is Full scart and support RF-OUT(Analoge) Scart2 Jack is Half scart and support MNT-OUT Side AV Side AV

Analog(D-Sub 15Pin) HDMI1/DVI,HDMI2,HDMI3,HDMI4

L/R Input

Side(X-Studio Only PG60 Series)

(5) 32” XGA Module

Display Screen Device Aspect Ratio PDP Module

Operating Environment

Storage Environment

Input Voltage

1 2 3

No Item Specification Remark

32 inch Wide Color Display Module 16:9 PDP32G1####, RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1024 horiz. By 720 ver.

1) Temp. : 0 ~ 40 deg

2) Humidity : 20 ~ 80 %

3) Temp. : -20 ~ 60 deg

4) Humidity : 10 ~ 90 % 100-240V~, 50/60Hz

PDP

LGE SPEC.

Maker LG

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Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet is applied to all of the PD81A chassis manufactured at LG TV Plant all over the world. Ex.) PD81A: 50PG6000-ZA, 42PG6000-ZA, 50PG7000-ZB,

60PG7000-ZB, 32PG6000-ZA ...

2. Specification.

[ Caution: The module keeping condition

1. The module keeping condition: The normal temperature

condition(more than 15°C)

--> Immediately the line supply.

2. The module keeping condition: 0°C

--> The module must be kept for more than 2 hours at the normal temperature.

3. The module keeping condition: -20°C

--> The module must be kept for more than 3 hours at the normal temperature.

4. The case of Gu-mi factory at the winter season.

--> The module must be kept for more than 5 minutes at the heating zone(40°C~45°C).

(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±5°C 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.

O After RGB Full White in HEAT-RUN Mode, the receiver

must be 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 “3. Test Pattern” by using

D/E(CH +/-) and press

ENTER(

Select “White” by using

F/G(VOL +/-) and press

ENTER(

- 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

- Using ‘power on’ button of the control R/C, power on TV.

- All adjustment process is executed through RS-232C.

- Do not connect external input cable.

3. S/W Auto Download Using the USB Memory Stick

[ Caution

- Using ‘power on’ button of the control R/C, power on TV.

- USB file (EPK) version must be bigger than downloaded version of main B/D.

(1) Insert the USB memory stick to the SET. (2) Using ‘power on’ button of the control R/C, power on TV. (3) S/W download process is executed automatically.

4. Auto-control Adjustment is Process

(1) All adjustment process is executed through RS-232C. (2) Command send --> ADC Calibration --> Model name

download --> EDID download.

(3) Auto-control adjustment protocol(RS-232C)

(4) Defined model name protocol (RS-232C)

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Only for training and service purposes

5. Manual Model Name Download

(1) Press ADJ key on R/C for model name D/L (2) Select “. Model Option” and press ENTER(

(3) Insert Option value by a number key (4) Press the ENTER(

6. Manual ADC Adjustment

[ Caution

- Do not connect external input cable

- Adjustment result is applied to SET On/Off later.

[ Adjustment is done using internal ADC, so input signal is

not necessary.

(1) Press ADJ key on R/C for adjustment. (2) Select “2. ADC calibration” by using

D/E(CH +/-) and

press ENTER(

V).

(3) Select “Start’ by using

F/G(VOL +/-) and press

ENTER(

V).

(4) ADC adjustment is executed automatically.

7. Manual EDID Download

(1) Press the ADJ KEY on R/C and enter EZ ADJUST. (2) Select “5. EDID D/L” by using

D/E(CH +/-) and press

ENTER(

V).

(3) Select “Start” and press ENTER(

V).

(4) EDID download is executed automatically. (5) Press EXIT key on R/C.

8. EDID Data

(1) HDMI 1 (256 bytes)

(2) RGB (128 bytes)

=> Detail EDID Options are below(

, , , )

-> Product ID

-> Serial No : Controlled on production line

-> Month, Year : Controlled on production line

NO SIGNAL or White noise

NO SIGNAL

RF Input AV / Component / RGB input

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Only for training and service purposes

4. -> Model Name

-> Checksum : Changeable by total EDID data.

9. PCMCIA CARD Checking Method

You must adjust DTV 29 Channel and insert PCMCIA CARD to socket.

(1) If PCMCIA CARD works normally, normal signals display

on screen. But it works abnormally, “No CA module” words display on screen.

[ Caution: Set up “RF mode” before launching products.

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

- Test equipment: D.M.M 1EA

- Connection Diagram for Measuring: refer to fig.1, fig 2, fig 3. fig 4

10. 50” POWER PCB Ass’y Voltage Adjustment

(Va, Vs voltage Adjustment)

10-1. Model name: 50PG6000, 50PG6010 10-2. Adjustment Method

(1) 50” Va Aadjustment (refer fig. 1)

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)

(2) 50” Vs Adjustment (refer fig. 1)

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)

11. 42” POWER PCB Ass’y Voltage Adjustment

(Va, Vs voltage Adjustment)

11-1. Model name: 42PG6000, 42PG6010 11-2. Adjustment Method

(1) 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)

(2) 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)

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

P812

P811

P813

Vs adj

Va adj

VR951

SC101

VR901

GND

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

P812

P811

P813

Vs adj

Va adj

VR951

SC101

VR901

GND

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

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Only for training and service purposes

12. 60”(FHD), 50”(FHD) POWER PCB Ass’y Voltage Adjustment

(Va, Vs voltage Adjustment)

12-1. Model name:50PG7000, 60PG7000, 50PG4000 12-2. Adjustment Method

(1) 60” FHD 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)

(2) 60” FHD 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)

13. 32”(XGA) POWER PCB Ass’y Voltage Adjustment

(Va, Vs voltage Adjustment)

13-1. Model name:32PG6000, 32PG6010 13-2. Adjustment Method

(1) 32” Va Adjustment (refer fig. 4)

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)

(2) 32” Vs Adjustment (refer fig. 4)

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)

- Before adjusting White-balance , the AV ADC should be done.

- If ADC status were “NG”, Need to ADC adjustment.

14. Adjustment of White Balance

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

adjustment.

14-1. 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 CS1000 and adjust in accordance with White balance adjustment coordinate.

O Color temperature standards according to CSM and Module

O Change target luminance and range of the Auto adjustment

W/B equipment.

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

(Fig. 4) 32inch Power PCB Assy Voltage Adjustment

O White balance adjustment coordinate and color temperature

PC (for communication through RS-232C) ==> UART Baud rate : 115200 bps

14-2. Connecting Picture of the Measuring

Instrument

(On Automatic control ) Inside PATTERN is used when W/B is controlled. Connect to auto controller or push control R/C INSTART —> Enter the mode of White-Balance, the pattern will come out.

14-3. 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 it with the surface of the Module and Color Analyzer’s Prove vertically.(80~100°).

(3) Aging time

1) After aging start, keep the power on (no suspension of power supply) and heat-run over 5 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)

14-4. Manual White Balance

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

2) Press the ADJ KEY on R/C and enter EZ ASJUST Select “2. White Balance” and press

G (VOL +)

Set test-pattern on and display inside pattern.

3) 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

<Temperature: WARM>

- R-Cut/ G-Cut / B-Cut is set to 64

- Control G-Gain and B-Gain.

- Each gain is limited to 192

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Only for training and service purposes

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