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LG 42PC5R Service Manual
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LG 42PC5R Service Manual

LG 42PC5R Service Manual

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See also: Owner's Manual
PLASMA TV
SERVICE MANUAL
CHASSIS : PP78A
MODEL : 42PC5R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
42PC5R1
website:http://biz.LGservice.com
42PC5R-ZB
42PC5R1-ZD

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  • Page 1 PLASMA TV SERVICE MANUAL CHASSIS : PP78A MODEL : 42PC5R 42PC5R-ZB 42PC5R1 42PC5R1-ZD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2 CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ..............6 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................23 EXPLODED VIEW .................. 24 EXPLODED VIEW PARTS LIST ............25 REPLACEMENT PARTS LIST ............... 26 SVC. SHEET ....................PRINTED CIRCUIT DIAGRAM ..............- 2 -...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE 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.

  • Page 4: Specifications

    Plasma Display Panel Aspect Ratio 16:9 PDP Module PDP42X4, Clear Filter RGB Closed Type Operating Environment 1)Temp. : 0~40deg LGE SPEC. 2)Humidity : 0~85% Storage Environment 3)Temp. : -20~60deg 4)Humidity : 0~85% Input Voltage 100-240V~, 50/60Hz Maker : LG - 4 -...
  • Page 5 Module Specification (PDP42X4) Item Unit Remark Display area 921.5 (H) * 519.0(V)±0.5 1005 (W) x 597 (H) x 60.7 (D)±1 Outline dimension 1024 (H) x 768(V) Number of Pixels 1Pixel=3RGB Cells Cell pitch 300um (H) x 676um (V) 1Pixel=3RGB Cells RGB closed type Color arrangement 13.8...

  • Page 6: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object LPT Port Driver (LptDrv) Setups : Program Files > Micronas > Visual I2C > Port_Driver These instructions is applied all of the 42” PLASMA TV, *Use for Windows 95/98 : Setup_LptDrv_v0104_9x.exe PP78A Chassis. *Use for Windows 2000/XP : Setup_LptDrv_v0202_XP_2000.exe *Use for Windows NT : Setup_LptDrv_v0104_NT.exe 2.
  • Page 7 (1) Connect the download jig to D-sub jack. (2) Execute ‘Download.vi2c’ program in PC, then a main window will be opened. (3) Double click the blue box and confirm "Bootloader Version" as 42. => Select the "Bootloader.bat" file. (install > VCTP_download > Bootloader) =>...
  • Page 8 (8) Click OK button at the "edit window". (5) Double click the blue box and confirm "Bootloader Version" as 42. (9) Under Downloading process. (10) If download is failed, for example "No acknowledge from slave". Execute download again from(1). (6) Click the "Erase Flash" button. 6-2.Download method 2 (AV Plate Ass’y) (7) Double click the download file low then, "edit"...
  • Page 9 (11) Click OK button at the "edit window". (4) Click "GO" button. If you don’t push the “go”, the Hex file would not be downloaded although the download proceeds normally at first glance. (12) Under Downloading progress. (5) Double click the blue box and confirm "Bootloader Version"...
  • Page 10 (10) Choose the Hex file in folder and execute downloading 7-4. Connection condition with click "open button". (1) IC name and circuit number : VCTP and IC500. (2) Use voltage : 3.3V. (3) SCL : 15pin. (4) SDA : 12pin. (5) Tact time : about 3seconds.

  • Page 11: Adjustment Method

    8. Tool Option Area Option Change 10-3. Connection structure 8-1. Profile : Must be changed the option value because being different with some setting value depend on module, inch and market. 8-2. Required Test Equipment 1) Adjustment remocon. 8-3. Adjustment method Before PCB check, have to change the Tool option and Area option.
  • Page 12 3. Month, Year : Controlled on production line ex) Monthly: '03' => '03' Year: '2005' => '0F' 4. Model Name : model name -> LG TV - LG TV 5. Checksum (7EH) -> Changeable by total EDID data. - 12 -...
  • Page 13 (4) Push the “Write Data & Verify”button. And confirm “Yes”. (1) Enter the DDC adjust mode. - Enter the white balance adjustment mode at the same time heat-run mode when pushing the power on by power only key. - Maintain the white balance adjustment mode with same condition of Heat-run.
  • Page 14 12-5. Adjustment of White Balance 13. Input the Shipping Option Data (For Manual adjustment) (1) Push the ADJ key in a Adjust Remote control. - Adjustment mode : Two modes of Cool (Dynamic) and (2) Input the Option Number that was specified in the BOM, Warm(Mild).

  • Page 15: Troubleshooting

    TROUBLESHOOTING 1. No power (1) Symptom 1) It is not discharged minutely from the module. 2) Light does not come into the front LED. (2) Check process Is plug in power Plug in a power cord cord inserted ? Connect a cable. Is the Line Filter and Plasma(CN1), LCD(SC100) PSU connected?
  • Page 16 2. Protect mode (1) Symptom 1) After once shining, it does not discharge minutely from module. 2) The relay falls.(The sound is audible “Click”.) 3) It is converted with the color where the front LED is red from green. (2) Check following Is output the normality Low/High Is the Power Board Replace Power Board.
  • Page 17 3. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is green. (2) Check following Does Is output the normality Replace the Is the inverter minute discharge Low/High voltage Power board.
  • Page 18 5. In case of becomes unusual display from rear AV mode. Is video input of the A/V jack normal? Check the input source. (Check R172) Sam as Block A 6. In case of becomes unusual display from Side AV mode. Is video input of the A/V jack normal? Check the input source.
  • Page 19 8. In case of becomes unusual display from SCART 1 mode. Is video input of the A/V jack normal? Check the input source. (Check R172) Sam as Block A 9. In case of becomes unusual display from SCART 1_RGB mode. video input of the A/V jack normal?(Check Check the input source.
  • Page 20 11. In case of becomes unusual display from component 1 mode. Is video input of the A/V jack Check the input source. normal? (Check R248, R249,R250) Change IC(IC500) 12. In case of becomes unusual display from component 2 mode. Is video input of the A/V jack Check the input source.
  • Page 21 14. No Sound (1) Symptom 1) LED is green. 2) Screen display but sound is not output. (2) Check following Set on speaker All input(mode) Is the speaker in menu. is no sound. on it men? Is the speaker Only HDMI is Check the Speaker Download the EDID data.
  • Page 22 15. HDMI mode In only video Download EDID data each port. normal? 1. Check TV input mode. (HDMI 1 port support HDMI and DVI. So if you input DVI signal and PC audio from phone jack, You can hear PC audio.) 2.
  • Page 23 BLOCK DIAGRAM - 23 -...

  • Page 24: Exploded View

    EXPLODED VIEW - 24 -...
  • Page 25 AGU31680921 Plate Assembly, ASSY 42PC5R-ZB(MA LOCAL) EBR32773022 Hand Insert PCB Assembly, Main MAIN1 M.I PP78A H4 VCT-PRO. 42PC5R SKD HAND INSERT EBR35814302 Hand Insert PCB Assembly, Main MAIN M.I PP78A H4 VCT-PRO PDP 42” HAND INSERT.SKD . . LGERA EBR35814305 Hand Insert PCB Assembly, Main MAIN M.I PP78A H4 VCT-PRO PDP 42”...

  • Page 26: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 02. 23. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION MAIN BOARD main C320 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G CAPACITOR C321 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G C100 0CC102CK41A C1608C0G1H102JT 1nF 5% 50V C0G C322...
  • Page 27 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C537 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G C622 0CK682CK51A C1608Y5P1H682KT 6.8nF 10% 50V Y5P C538 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G C623 0CC270CK41A C1608C0G1H270JT 27pF 5% 50V C0G C539 0CE226WF6DC MVK5.0TP16VC22M 22uF 20% 16V 30MA...
  • Page 28 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C814 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R D203 EAH33945901 CDS3C30GTH 30V 50V 120V 1.9A 1W C815 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 80M D204 EAH33945901 CDS3C30GTH 30V 50V 120V 1.9A 1W C816 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 80M...
  • Page 29 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L512 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1.6X1.3MM L605 EAP32842807 Wire Wound,NR8040T330M 33UH 20% 250V L602 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1.6X1.3MM L606 EAP32842807 Wire Wound,NR8040T330M 33UH 20% 250V L603 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1.6X1.3MM L613 EAP32842807...
  • Page 30 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R172 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R304 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R173 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R305 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R174 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608...
  • Page 31 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R368 0RJ0392D677 MCR03EZPJ390 39OHM 5% 1/10W 1608 R543 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R369 0RJ0392D677 MCR03EZPJ390 39OHM 5% 1/10W 1608 R544 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R370 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10W 1608...
  • Page 32 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R634 0RJ1003D677 MCR03EZPJ104 100KOHM 5% 1/10W 1608 Q206 0TRIY80001A 2SC3052 NPN 6V 50V 50V 200MA 100NA R635 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 Q400 0TRIY80001A 2SC3052 NPN 6V 50V 50V 200MA 100NA R636 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012...
  • Page 33 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IR/LED BOARD 0RH0000D622 Resistor, MCR10EZHJ000 0OHM 5% 1/8W C101 0CE4763F618 Capacitor, ESF476M016T1A5E05G 47uF 20% 0RH0000D622 Resistor, MCR10EZHJ000 0OHM 5% 1/8W C102 0CE4763F618 Capacitor, ESF476M016T1A5E05G 47uF 20% 0RH0000D622 Resistor, MCR10EZHJ000 0OHM 5% 1/8W C103...
  • Page 37 PRINTED CIRCUIT BOARD MAIN(TOP) MAIN(BOTTOM) CONTROL(TOP) IR/LED CONTROL(BOTTOM) SIDE A/V(TOP) SIDE A/V(BOTTOM)
  • Page 38 Feb., 2007 P/NO : MFL34335201 Printed in Korea...

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