LG PA92B, 60PS70FD, 60PS70FD-AA, 50PS80ED, 50PS80ED-AA Service Manual

PLASMA TV

SERVICE MANUAL

CAUTION

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

CHASSIS : PA92B

MODEL : 60PS70FD 60PS70FD-AA

North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com

Internal Use Only

P/NO : MFL62048902 (0905-REV00) Printed in Korea

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Only for training and service purposes

CONTENTS

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

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

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

ADJUSTMENT INSTRUCTION..................................................................................................6

BLOCK DIAGRAM ...................................................................................................................12

EXPLODED VIEW ...................................................................................................................16

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 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 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 50”/60” PDP TV used PA92A/B 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 : CB specification EMC : CISPR 13 specification

V Model General Specification

Chassis

PA92A PA92B PA92B

50PS80ED-AA 50PS70FD-AA 60PS70FD-AA

Australia LG

DVR DVR-Ready DVR-Ready

Model Name Market Brand Remark

Model 50PS80ED-AA 50PS70FD-AA 60PS70FD-AA

Remark Safety : IEC60065, EN60065 EMC : CISPR 13 Class B

Market

Australia

Appliance

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Only for training and service purposes

V Module Specification

(1) 50H3

(2) 60H3

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Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application

This spec. sheet is applied to all of the PA92A/B chassis .

2. Designation

[ 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).

2-1. The adjustment is according to the order which is

designated and which must be followed, according to the plan which can be changed only on agreeing.

2-2. If there is no specific designation, the adjustment must be

performed in the circumstance of 25±5°C of temperature and 65±10% of relative humidity.

2-3. The input voltage of the set must keep 100~240V,

50/60Hz.

2-4. Input signal Unit: Product Specification Standard. 2-5. The set must be operated for about 5 minutes prior to the

adjustment. .

O After turning on Full Window pattern in HEAT-RUN

Mode, the receiver must be operated.

O Enter into HEAT-RUN MODE

(1) Press the ‘POWER ON’ button on R/C for adjustment.

- Set heat run should be activated without a signal generator.

- Single color patterns (RED / BLUE / GREEN) of HEAT RUN MODE are used to check a plasma panel.

[ Caution: If you turn on a still screen more than 20 minutes

(Especially digital pattern, cross hatch pattern), an after image may be made in the black level part of the screen.

[ Caution: Use ‘power on’ button of a service R/C to power on

TV set. Do not connect any external input cable if there is no any specifics.

3. CPLD Download

(PA92A ONLY : 50PS80ED-AA )

3-1. CPLD Download 6pin Wafer Pin Map

1. TCK

2. TDO

3. VCC

4. TMS

5. TDI

6. GND

3-2. CPLD Download

(1) Set up the PC which is installed CPLD DATA Download

Progrem.

(2) Connect the Altera Byteblaster Interface Assy to 25P

Printer Port.

(3) Execute the Progam.

(4) Click the ADD File (6) and open the POF file.(7)

(5) Check the Program,Verify,Blank. And Click the Start.

4. Update S/W using Auto Sownload through the USB

[ Caution: S/W version of USB file (xxx.epk) must be bigger

than one which is downloaded previously.

(1) Insert the USB stick to the USB socket (2) A downloaded file in USB stick will be detected automatically. (3) If S/W version of USB file (xxx.epk) is bigger than one

which is downloaded previously, the message, “Copying files from memory”, will appear.

(4) If an update procedure was completed, TV set will be

turned off and on automatically.

(5) If TV set is turned on, check an updated version.

5. After Downloading S/W, Adjust TOOL OPTION

(1) Push “IN-START” button on a service R/C. (2) Select “Tool Option 1” and Push “OK” button. (3) Put the number of a below table in order of a suffix of the

“Tool Option(XXXX)”. (Each model has a different number.)

6. ADC Calibration Procedure

(1) Necessary items before Adjustment items.

- Pattern Generator : (MSPG-925F)

- Adjust 480i Comp1 (MSPG-925FA:model :209 , pattern :65)

- Adjust 1080p Comp1/RGB(MSPG-925FA:model :225 , pattern :65)

(2) Input the component (480i/Horizontal Color Bar) signal to a

TV set. (3) Push “ADJ” button on a service R/C. (4) Enter Internal ADC mode by selecting ‘6. ADC Calibration’. (5) If you select ‘Start’ on a dialog box of the screen, ADC

Calibration will be begun.

(6) Next input the component (1080p/Horizontal Color Bar)

signal to a TV set. (7) Apply the (2)~(4) sequence.

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Only for training and service purposes

6

7

(8) Finally input the RGB (1080p/Horizontal Color Bar) signal

to a TV set.

(9) Apply the (2)~(4) sequence again.

O Auto ADC Calibration Map(RS-232C)

[Adjust Sequence]

- aa 00 00 [Enter Adjust Mode]

- xb 00 40 [Component1 Input (480i)]

- ad 00 10 [Adjust 480i Comp1]

- xb 00 60 [RGB Input (1024*768)]

- ad 00 10 [Adjust 1024*768 RGB]

- aa 00 90 End Adjust mode

7. EDID Download Procedure

(1) Push “ADJ” button on a service R/C. (2) Enter EDID auto download mode by selecting ‘9. EDID

D/L’.

(3) If you select ‘Start’ on a dialog box of the screen, EDID

download will be begun automatically.

(4) Press ‘EXIT’ button on a service R/C.

(5) EDID Data

EDID data (Model name = LG TV)

1) HDMI 1 (256 bytes)

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

__________________________________________________

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 | 00 13 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 | 09 48 4C A1 08 00 31 40 45 40 61 40 81 80 90 40 30 | 01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 40 | 35 00 C4 8E 21 00 00 1A 66 21 50 B0 51 00 1B 30 50 | 40 70 36 00 C4 8E 21 00 00 1E 00 00 00 FD 00 38 60 | 3E 1E 50 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 58

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

__________________________________________________

0 | 02 03 29 F1 51 81 02 03 06 07 15 16 11 12 13 04 10 | 14 05 20 22 1F 10 26 15 07 50 09 07 07 67 03 0C 20 | 00 10 00 38 2D E3 05 03 01 01 1D 00 72 51 D0 1E 30 | 20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 40 | 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 50 | 8A 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 0E 60 | 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00 70 | 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 82

2) HDMI 2 (256 bytes)

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

__________________________________________________

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 | 00 13 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 | 09 48 4C A1 08 00 31 40 45 40 61 40 81 80 90 40 30 | 01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 40 | 35 00 C4 8E 21 00 00 1A 66 21 50 B0 51 00 1B 30 50 | 40 70 36 00 C4 8E 21 00 00 1E 00 00 00 FD 00 38 60 | 3E 1E 50 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 58

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

_________________________________________________

0 | 02 03 29 F1 51 81 02 03 06 07 15 16 11 12 13 04 10 | 14 05 20 22 1F 10 26 15 07 50 09 07 07 67 03 0C 20 | 00 20 00 38 2D E3 05 03 01 01 1D 00 72 51 D0 1E 30 | 20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 40 | 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 50 | 8A 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 0E 60 | 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00 70 | 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 72

3) HDMI 3 (256 bytes)

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

__________________________________________________

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 | 00 13 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 | 09 48 4C A1 08 00 31 40 45 40 61 40 81 80 90 40 30 | 01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 40 | 35 00 C4 8E 21 00 00 1A 66 21 50 B0 51 00 1B 30 50 | 40 70 36 00 C4 8E 21 00 00 1E 00 00 00 FD 00 38 60 | 3E 1E 50 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 58

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

__________________________________________________

0 | 02 03 29 F1 51 81 02 03 06 07 15 16 11 12 13 04 10 | 14 05 20 22 1F 10 26 15 07 50 09 07 07 67 03 0C 20 | 00 30 00 38 2D E3 05 03 01 01 1D 00 72 51 D0 1E 30 | 20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 40 | 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 50 | 8A 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 0E 60 | 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00 70 | 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 62

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Only for training and service purposes

NO Item CMD 1

AAAD010

When transfer the ’Mode In’ Carry the command. Automatically adjustment (The use of a internal pattern)

0

CMD 2 Data 0

Adjust ’Mode In’

ADC Adjust

Enter

Adjust Mode

ADC Adjust

4) HDMI 4 (256 bytes)

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

_________________________________________________

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 | 00 13 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 | 09 48 4C A1 08 00 31 40 45 40 61 40 81 80 90 40 30 | 01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 40 | 35 00 C4 8E 21 00 00 1A 66 21 50 B0 51 00 1B 30 50 | 40 70 36 00 C4 8E 21 00 00 1E 00 00 00 FD 00 38 60 | 3E 1E 50 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 58

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

__________________________________________________

0 | 02 03 29 F1 51 81 02 03 06 07 15 16 11 12 13 04 10 | 14 05 20 22 1F 10 26 15 07 50 09 07 07 67 03 0C 20 | 00 40 00 38 2D E3 05 03 01 01 1D 00 72 51 D0 1E 30 | 20 6E 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 40 | 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 50 | 8A 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 0E 60 | 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00 70 | 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 52

5) RGB (256 bytes)

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

__________________________________________________

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 | 00 13 01 03 08 73 41 96 0A CF 74 A3 57 4C B0 23 20 | 09 48 4C A1 08 00 31 40 45 40 61 40 81 80 90 40 30 | 01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 40 | 35 00 C4 8E 21 00 00 1A 66 21 50 B0 51 00 1B 30 50 | 40 70 36 00 C4 8E 21 00 00 1E 00 00 00 FD 00 38 60 | 3E 1E 50 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D0

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

_________________________________________________

0 | 02 03 04 00 0E 1F 00 80 51 00 1E 30 40 80 37 00 10 | C4 8E 21 00 00 1C 00 00 00 00 00 00 00 00 00 00 20 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 30 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 40 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 50 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 60 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 70 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 25

O Auto EDID Download Map(RS-232C)

8. POWER Supply Unit PCB Ass’y Va/Vs Voltage Adjustment

[ Caution: Both Vs and Va voltage adjustment are necessary.

8-1. Model name:

50PS80ED-AA ,50PS70FD-AA , 60PS70FD-AA

8-2. Va/Vs Adjustment Procedure

(1) Connect positive(+) terminal of DMM to Vs/Va pin, connect

negative(-) terminal to GND.

(2) Turning ‘Vs/Va Adjust’ and adjust Vs/Va voltages to a

value which is written on a right/top label of a module. (deviation ; ±0.5V)

[ Caution : Each Power Supply Unit PCB assembly must be

checked by check JIG set. (Because power PCB Ass’y damages to PDP Module, especially be careful)

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

- Test equipment: DMM 1EA

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Only for training and service purposes

NO

Item

CMD 1

AAAE0000

When transfer the ’Mode In’ Carry the command. Automatically adjustment (The use of a internal Data)

10

CMD 2 Data 0

Download ’Mode In’

Download

Enter

Download Mode

EDID data and Model

option download

9. White Balance Adjustment

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

adjustment.

O Test Equipment

Color Analyzer (CS-1000, CA-100+(CH.10), CA-210 (CH.10) )

O

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 adjust

in accordance with White balance adjustment coordinate.

9-1. Color Temperature Standards

According to CSM and Module

9-2. Change Target Luminance and Range

of the Auto Adjustment W/B Equipment

- 50PS80ED-AA(50H3)

- 50PS70FD-AA(50H3)

- 60PS70FD-AA(60H3)

9-3. White Balance Adjustment Coordinate

and Color Temperature

[ PC (for communication through RS-232C) UART Baud rate :

115200 bps

9-4. Automatic W/B Adjustment

(1) Internal PATTERN should be used when W/B is adjusted.

Connect to auto controller like below.

(2) Start White-Balance adjustment, then the full white window

pattern will appear on the screen.

(3) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10ux).

(4) Measure and adjust after sticking the Color Analyzer (CA-

100+, CA210 ) to the side of the module.

O

Auto W/B Adjustment Map(RS-232C)

RS-232C COMMAND [ CMD ID DATA ]

Wb 00 00 White Balance Start Wb 00 FF White Balance End

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Only for training and service purposes

LG PA92B, 60PS70FD, 60PS70FD-AA, 50PS80ED, 50PS80ED-AA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual