LG 50PB4D Service Manual

Chassis pb73b

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Service manual (61 pages)

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PLASMA TV

SERVICE MANUAL

CHASSIS : PB73B

MODEL : 50PB4D

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Internal Use Only

website:http://biz.LGservice.com

50PB4D-AA

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Page 1 All manuals and user guides at all-guides.com Internal Use Only website:http://biz.LGservice.com PLASMA TV SERVICE MANUAL CHASSIS : PB73B MODEL : 50PB4D 50PB4D-AA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Page 2: Table Of Contents
BLOCK DIAGRAM ....................31 EXPLODED VIEW .....................40 EXPLODED VIEW PARTS LIST ................41 REPLACEMENT PARTS LIST................42 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
50X4(LGE) Operating Environment 1) Temp 0~40deg 2) Humidity : ~80% Storage Environment 1) Temp : -20~60deg 2) Humidity : ~85% Copyright©2007 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
Page 5 7,500 85% Full white pattern Color Distortion, DG 10.0 Color Distortion, DP 10.0 43.0 Color S/N, AM/FM Color Killer Sensitivity Copyright©2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6: Adjustment Instructions
- Turn on the JIG. - Run the DDC recording S/W (EDID Data Write & Read). (Execute in DOS mode) Copyright©2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7 Va voltage which on label of panel right/top. displayed for 1 second. (Deviation; ±0.5V) (MSPG-925FA : -> model : 209, pattern : 65) Copyright©2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 3) When it enters into the adjustment mode, the screen is automatically switched to TV 3CH and the following window is displayed. Copyright©2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9 4) Connect the HDMI Cable to the set. (Limited to the set with HDMI option) 5) Select and adjust the model applicable to PB75A chassis from the adjuster. Copyright©2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 C0, C5, C6, S11, C20, C35, C52, C68 COOL CA-100 0.276±0.002 0.283±0.002 Digital MEDIUM CA-100 0.285±0.002 0.293±0.002 WARM CA-100 0.313±0.002 0.329±0.002 Copyright©2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11: Trouble Shooting Guide
All manuals and user guides at all-guides.com TROUBLE SHOOTING GUIDE 1. Video (1)NO OSD <FHD> Copyright©2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12 All manuals and user guides at all-guides.com 1. Video (2)NO OSD <FHD> Copyright©2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 All manuals and user guides at all-guides.com 1. Video (3)Video Path Copyright©2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 15 All manuals and user guides at all-guides.com 1. Video (5) DTV/CAD TV Copyright©2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 17 All manuals and user guides at all-guides.com 1. Video (7) Component/RGB Copyright©2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18 All manuals and user guides at all-guides.com 1. Video (8) Component/RGB Copyright©2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 19 All manuals and user guides at all-guides.com 1. Video (9) HDMI/DVI Copyright©2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
Page 20 All manuals and user guides at all-guides.com 1. Video (10) HDMI/DVI Copyright©2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
Page 21 All manuals and user guides at all-guides.com 1. Video (11) POWER1 Copyright©2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 22 All manuals and user guides at all-guides.com 1. Video (12) POWER2 Copyright©2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
Page 23 All manuals and user guides at all-guides.com 2. Audio (1) All path Copyright©2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
Page 24 All manuals and user guides at all-guides.com 2. Audio (2) Common Sound Out Copyright©2007 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
Page 25 All manuals and user guides at all-guides.com 2. Audio (3) TV RF No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
Page 26 All manuals and user guides at all-guides.com 2. Audio (4) DTV No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
Page 27 All manuals and user guides at all-guides.com 2. Audio (5) TV RF No Sound / DTV No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
Page 28 All manuals and user guides at all-guides.com 2. Audio (6) AV/Component/RGB No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
Page 29 All manuals and user guides at all-guides.com 2. Audio (7) HDMI No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
Page 30 All manuals and user guides at all-guides.com 2. Audio (8) AV/Component/RGB No Sound / HDMI No Sound Copyright©2007 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
Page 31: Block Diagram
All manuals and user guides at all-guides.com BLOCK DIAGRAM Copyright©2007 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
Page 40: Exploded View
All manuals and user guides at all-guides.com EXPLODED VIEW Copyright©2007 LG Electronics. Inc. All right reserved. - 40 - LGE Internal Use Only Only for training and service purposes...
Page 41: Exploded View Parts List
Supporter Assembly, 50PB4 SUPP_FILTER RIGHT ASSY AJJ31045001 Supporter Assembly, 50PB4 SUPP_FILTER LEFT ASSY ACQ35133605 Cover Assembly, Rear 50PB4D-AA (FANLESS) W/O DVR 50” 50PB4D-AA BACK COVER ASSY(FANLESS); W/O DVR AGU31681105 Plate Assembly, ASSY PLATE TUNER BOT SMALL, 60PY3DF-UA(E3) AGU31680929 Plate Assembly, ASSY PLATE TUNER COVER SMALL, 60PY3DF-AA, AUS EBR37280410 Hand Insert PCB Assembly, MAIN M.I PB73B 50PB4D-AA AAULLHX AUS ATI HD(50PB4D-AA) FANLESS M.I...
Page 42: Replacement Parts List
0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R C2196 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R C2150 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 42 - LGE Internal Use Only Only for training and service purposes...
Page 43 0CK471BK56A C1005X7R1H471KT 470pF 10% 50V X7R C231 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R C340 0CH2334F566 0805B334K160CT 330nF 10% 16V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 43 - LGE Internal Use Only Only for training and service purposes...
Page 44 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16V 16MA C412 0CK473CH56A C1608X7R1E473KT 47nF 10% 25V X7R C496 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 44 - LGE Internal Use Only Only for training and service purposes...
Page 45 0CK471BK56A C1005X7R1H471KT 470pF 10% 50V X7R C529 0CK104BF56A C1005X7R104KET 100nF 10% 16V X7R C705 0CK471BK56A C1005X7R1H471KT 470pF 10% 50V X7R Copyright©2007 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Only for training and service purposes...
Page 46 0603B104K500CT 100nF 10% 50V X7R C9021 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 11 C9022 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R - Copyright©2007 LG Electronics. Inc. All right reserved. - 46 - LGE Internal Use Only Only for training and service purposes...
Page 47 ZCAT1518-0730-M- K 65OHM 15MM 7MM L752 EAM37276902 LCF20P101-TM LPF(EMI) 100MHZ 30pF FL741 EAM33010401 MEM2012P25R0 EMI 25MHZ 100pF 400N L755 6200J00005N HH-1M2012-121JT(H:1mm) 120OHM 2X1 Copyright©2007 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
Page 48 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/ Q305 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150M R100 0RH9100D622 MCR10EZHJ911 910OHM 5% 1/8W 2012 Copyright©2007 LG Electronics. Inc. All right reserved. - 48 - LGE Internal Use Only Only for training and service purposes...
Page 49 0RJ4701C678 MCR01MZPJ472 4.7KOHM 5% 1/16W 100 R163 EBC33834701 MCR03EZP5FX7150 715OHM 1% 1/10W 1 R3018 0RJ4700C678 MCR01MZPJ471 470OHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only Only for training and service purposes...
Page 50 MCR01MZPJ000 0OHM 5% 1/16W 1005 R R350 0RJ2000C678 MCR01MZPJ201 200OHM 5% 1/16W 1005 R4029 0RJ0000C678 MCR01MZPJ000 0OHM 5% 1/16W 1005 R Copyright©2007 LG Electronics. Inc. All right reserved. - 50 - LGE Internal Use Only Only for training and service purposes...
Page 51 0RJ1000C678 MCR01MZPJ101 100OHM 5% 1/16W 1005 R4101 0RJ4701C678 MCR01MZPJ472 4.7KOHM 5% 1/16W 100 R438 0RJ1000C678 MCR01MZPJ101 100OHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only Only for training and service purposes...
Page 52 0RJ4702C678 MCR01MZPJ473 47KOHM 5% 1/16W 1005 R5031 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R588 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 52 - LGE Internal Use Only Only for training and service purposes...
Page 53 0RJ1202C678 MCR01MZPJ123 12KOHM 5% 1/16W 1005 R730 0RJ1002C678 MCR01MZPJ103 10KOHM 5% 1/16W 1005 R9030 0RJ1002C678 MCR01MZPJ103 10KOHM 5% 1/16W 1005 Copyright©2007 LG Electronics. Inc. All right reserved. - 53 - LGE Internal Use Only Only for training and service purposes...
Page 54 Varistor, AVRL161A1R1NT 10V 30% 1.1pF P800 6630V90116A Wafer, FI-X30SSL-HF 30P 1.00MM 1R ANGLE VR411 6102W5V016A Varistor, AVRL161A1R1NT 10V 30% 1.1pF Copyright©2007 LG Electronics. Inc. All right reserved. - 54 - LGE Internal Use Only Only for training and service purposes...
Page 55 Bag, COMPLEX VINYL 180*150 0.58 H&C MODEL 4950TKA320A Plate, PRESS SBHG T1.2 SUPPORT UPSET FAB30021701 Screw, Machine 1SZZVMR001A RING WALL 5MM 25MM Copyright©2007 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only Only for training and service purposes...
Page 57 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 58 R1604 C1257 NC7SB3157P6X C1134 JP1114 10uF +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 59 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 60 All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM) IR/LED (TOP) IR/LED (BOTTOM) SIDE A/V Copyright©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61 All manuals and user guides at all-guides.com Sep., 2007 P/NO : MFL39439103 Printed in Korea...

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