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

- 2 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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....................................................................

- 3 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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

- 4 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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

4

5

6

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

LG

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

- 5 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Display Screen Device
Aspect Ratio
PDP Module

Operating Environment

Storage Environment

Input Voltage

1
2
3

4

5

6

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

4

5

6

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

4

5

6

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

- 6 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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

1

2

3

4

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

4

5

6

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

- 7 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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(

V)

Select “White” by using

F/G(VOL +/-) and press

ENTER(

V)

- 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)

- 8 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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(

V)

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

V)

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(

, , , )

1.

-> Product ID

2.

-> Serial No : Controlled on production line

3.

-> Month, Year : Controlled on production line

NO SIGNAL or White noise

NO SIGNAL

RF Input AV / Component / RGB input

- 9 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

4. -> Model Name

5.

-> 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

Va

GND

5V

Vs

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

P812

P811

P813

Vs adj

Va adj

VR951

SC101

VR901

Va

GND

5V

Vs

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

- 10 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

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

- 11 -

LGE Internal Use OnlyCopyright©2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes