LG 50PB65 Service Manual
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LG 50PB65 Service Manual

LG 50PB65 Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PD73A
MODEL : 50PB65
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
50PB65-ZA

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  • Page 1 Internal Use Only website:http://biz.LGservice.com PLASMA TV SERVICE MANUAL CHASSIS : PD73A MODEL : 50PB65 50PB65-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    BLOCK DIAGRAM .....................29 EXPLODED VIEW ....................30 EXPLODED VIEW PARTS LIST ................31 REPLACEMENT PARTS LIST................32 SCHEMATIC DIAGRAM..................PRINTED CIRCUIT DIAGRAM ................Copyright©2007 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright©2007 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specifications

    : 0~40deg 2)Humidity : 20~80% LGE SPEC. Storage Environment 3)Temp. : -20~60deg 4)Humidity : 10~90% Input Voltage 100-240V~, 50/60Hz Maker LG/Sanken Copyright©2007 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 Component Input (1EA) Y/Cb/Cr, Y/Pb/Pr RGB Input(1EA) RGB-PC HDMI Input(2EA) HDMI-DTV & SOUND Audio Input (3EA) PC Audio, Component, AV L/R Input Copyright©2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Adjustment Instructions

    But it works abnormally, “No CA module” words display on screen. <50” EAY32929001 only for 50PB56> (Fig. 1) Connection diagram of power adjustment for measuring Copyright©2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 3) Set up S/W option. Repeat Number : 5 Device Address : A0 PageByte : 8 4) Power on the Set. Copyright©2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 => Detail EDID Options are below([1], [2], [3],[4], [5]) * Please refer HDMI1 => Detail EDID Options are below([1], [2], [3],[4], [5]) Copyright©2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 2) MSPG-925FS Pattern Generator (Which has Video Signal: 7 Color Bar Pattern shown in Fig. 4). - Model: 215 / Pattern: 65 Copyright©2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 2. Measure and adjust after sticking the Color Analyzer(CA- 100+, CA210) to the side of the module. 3. Aging time : keep white pattern using inside pattern. Copyright©2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only...
  • Page 11 50PB65-ZA 10436 1977 15-2. Push the menu button in DTV mode. (1) Select the STATION-> Diagno stics -> To set. Copyright©2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 1. After Click the ‘NEXT’ icon, Installation is finished. 2) Connect RS232 cable and turn on the power. (Use the general RS-232C Serial Cable) Copyright©2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 After Change a mode, you can see ‘GPROBE MODE’ 7) Wait the final message. 1. After DOWNLOAD, Turn off the TV after download -> Turn on. Copyright©2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...
  • Page 14 (1) Installation of the GProbe 5 1) Extract to folder GProbe5.0.0.15_S0006_EXE_09A.ZIP. CLICK 2) Install GProbe5.0.0.15.EXE - 1. CLICK 4) Install GProbe5.0.0.15.EXE - 3. Copyright©2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 1) Prepare a ‘*.hex‘, ‘isp_16_ext.hex‘, ‘*.txt‘ in the same folder. 5) Open the batch file - 1. 1. Click the ‘Commands’. CLICK * In the TEXT FILE Copyright©2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 2. Because change the ‘Tool Option’, the White Balance Value is reset. 8) Open the batch file - 3. 1. Choose the text file. Copyright©2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 1) Extract to folder lgterm.zip. 6) Insert ‘dn’ and Enter. (2) Download biz file using LG Term 1) Prepare the ‘ *.biz ‘ that you want to download on ST. 2) Connect TV set and PC by using RS232 cable, Turn on the TV.
  • Page 18 4. Enter ‘115200bps’ on the ‘Baud Rate’. 5. Enter the ‘Cortez’ on the ‘Download. 9) Download takes 60sec ~ 120sec. Copyright©2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19: Trouble Shooting Guide

    11. Check the Y B/D 9. Check the Power Manufacture’s model Module output circuit Module output circuit Board Output high passage tension circuit Copyright©2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 3.4V RL-ON 3.4V STB 5V Vs-ON 5V Det M5V-ON 3.4V STB 5V 3.4V-ON DESCRIPTION YH396-03V SMW250-013P SMW250-010P SMW250-012P YH396-04V YH396-10V Copyright©2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 3.4V RL-ON 3.4V STB 5V Vs-ON 5V Det M5V-ON 3.4V STB 5V 3.4V-ON DESCRIPTION YH396-03V SMW250-013P SMW250-010P SMW250-012P YH396-04V YH396-10V Copyright©2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 After removing the cables, connect them to the Power Board(except the SC101 connection cable), and change the AC voltage marking to manual. When ST-BY 5V does not operate, replace the Power Board. Copyright©2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only...
  • Page 23 After a COF crisis for each board, check the normal operation. For normal operation, normal ? corresponding COF failure means the module should be relaced. Copyright©2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 Check the PDP Module Reconnect the LVDS Is the LVDC cable normal? cable in P800 Is the IC700(FLI8548) Replace the VSC. Output normal? Copyright©2007 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Replace the VSC B/D IC(IC700) operate? normal? Replace the FIL8548 IC(IC700) Is the Ctrl Board of Replace the Ctrl B/D. Module normal? Copyright©2007 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 5-2. In case there is no display on the screen in specific modes (1) Symptom 1) There is no screen display from a specific input mode (RF, AV, Component, RGB, DVI). (2) Procedure check 1) Check the all input modes have normal display. 2) Check the video(main)/ data(sub), video(main)/ video(sub) have normal displays from the PIP mode or DW mode(re-check it/ swap).
  • Page 27 (8) In case of an unusual display in SCART2 mode Is the Video input of the Check the input source A/V Jack(J1201) normal? Same as Block A Copyright©2007 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 6. In case of no sound (1) Symptom 1) LED is Green. 2) Screen display appears but there is no sound. (2) Procedure check All input(modes) have Set speaker on in the Is the speaker on? no sound? menu. Is there no sound only Download Is the speaker Cable Check the Speaker...

  • Page 29: Block Diagram

    BLOCK DIAGRAM Copyright©2007 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...

  • Page 30: Exploded View

    EXPLODED VIEW Copyright©2007 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...

  • Page 31: Exploded View Parts List

    Plate, Shield PRESS AL 1.0 SHIELD AL E3 PY30 SHIELD,SIDE AV AAN31004602 Base Assembly, STAND 50PY30 PA71B SKD SWIVEL STAND ASSY 35509K0102A Cover, MOLD HIPS AP-50DB20S CABLE STAND 50PB2 Copyright©2007 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...

  • Page 32: Replacement Parts List

    0603B104K500CT 100nF 10% 50V X7R C1303 0CK105DH56A C2012X7R105KFT 1uF 10% 25V X7R -5 C1136 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...
  • Page 33 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R C1362 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R C147 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...
  • Page 34 0603B104K160CT 100nF 10% 16V X7R C189 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R - C414 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16V 16MA Copyright©2007 LG Electronics. Inc. All right reserved. - 34 - LGE Internal Use Only Only for training and service purposes...
  • Page 35 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R C613 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 80 C739 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 35 - LGE Internal Use Only Only for training and service purposes...
  • Page 36 C1005X7R104KET 100nF 10% 16V X7R C795 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G - C865 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 36 - LGE Internal Use Only Only for training and service purposes...
  • Page 37 CXA2069Q 8.5TO9.5V - - 1.3W QFP T D101 EAH33946001 CDS3C05GTA 5.6V 6.4V 19V 1.9A 1W IC200 0IPMG78391A SC2595STR 2.3TO5V 0 0W SOIC R/TP Copyright©2007 LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only Only for training and service purposes...
  • Page 38 0LCML00020G Inductor, MLI-201209-3R3K 3.3UH 10% 0V 30MA L1207 6210TCE001Z HH-1M2012-600JT 60OHM 2X1.25X1MM L1219 0LCML00020G Inductor, MLI-201209-3R3K 3.3UH 10% 0V 30MA Copyright©2007 LG Electronics. Inc. All right reserved. - 38 - LGE Internal Use Only Only for training and service purposes...
  • Page 39 MCR03EZPJ471 470OHM 5% 1/10W 1608 Q907 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150M R1040 0RJ4702D677 MCR03EZPJ473 47KOHM 5% 1/10W 1608 Copyright©2007 LG Electronics. Inc. All right reserved. - 39 - LGE Internal Use Only Only for training and service purposes...
  • Page 40 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W 1608 R1135 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R123 0RJ0472C678 MCR01MZPJ470 47OHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 40 - LGE Internal Use Only Only for training and service purposes...
  • Page 41 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 R1308 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R139 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608 Copyright©2007 LG Electronics. Inc. All right reserved. - 41 - LGE Internal Use Only Only for training and service purposes...
  • Page 42 MCR03EZPJ330 33OHM 5% 1/10W 1608 R1472 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1608 R R1734 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 Copyright©2007 LG Electronics. Inc. All right reserved. - 42 - LGE Internal Use Only Only for training and service purposes...
  • Page 43 0RJ4701D477 MCR03EZPF472 4.7KOHM 1% 1/10W 160 R195 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10W 160 R256 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 1608 Copyright©2007 LG Electronics. Inc. All right reserved. - 43 - LGE Internal Use Only Only for training and service purposes...
  • Page 44 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/ R604 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R681 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/ Copyright©2007 LG Electronics. Inc. All right reserved. - 44 - LGE Internal Use Only Only for training and service purposes...
  • Page 45 0RJ0682C678 MCR01MZPJ680 68OHM 5% 1/16W 1005 R770 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R888 0RJ0682C678 MCR01MZPJ680 68OHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Only for training and service purposes...
  • Page 46 Wafer, SMW200-10P 10P 2.00MM 1R STRAIGHT P1105 6602T20008L Wafer, SMW200-12P 12P 2.00MM 1R STRAIGHT P1300 6602T25008B Wafer, SMW250-03P 3P 2.50MM 1R STRAIGHT Copyright©2007 LG Electronics. Inc. All right reserved. - 46 - LGE Internal Use Only Only for training and service purposes...
  • Page 47 Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 C1257 R1604 C1134 NC7SB3157P6X 10uF JP1114 +3.3V_SWITCH 0.1uF R1600 Q1205 UART0_TX PDP : 100p 2SC3052 R1166 3.3K R1601 R1602 6.8K 2.2K UART1_TX COMM_UART_RX Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 2SC3875S READY C623 C624 TUNER_RESET FE_RESET AM_AUDIO to MSP DTV_TU_I2C DTV_TU_I2C 47pF 47pF C639 C635 100uF 4700pF R648 C637 4700pF GND_TU GND_TU GND_TU Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM) CONTROL B/D SIDE A/V IR/LED Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 Apr., 2007 P/NO : MFL38562705 Printed in Korea...

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