LG 42PJ250 Service Manual

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Owner's manual (360 pages)

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Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PU01A MODEL : 42PJ250 42PJ250-UA 42PJ250 42PJ250-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62881509 (1004-REV00) Printed in Korea...
Page 2 SAFETY PRECAUTIONS ......................3 SPECIFICATION.........................4 ADJUSTMENT INSTRUCTION ....................9 TROUBLE SHOOTING GUIDE ....................14 BLOCK DIAGRAM ........................46 EXPLODED VIEW ........................47 SVC. SHEET ..........................Copyright ©2010 LG Electronics Inc. All rights 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 ©2010 LG Electronics Inc. All rights reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 4: Specifications
Market Remark 42PJ250-UA NORTH AMERICA Safety : UL1492, CSA C22.2.No.1 42PJ250-UB EMC : FCC Class B, IC Class B Copyright ©2010 LG Electronics Inc. All rights reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
Page 5 Meduum:Color temperature 0 0.314 0.329 0.344 Warm:Color temperature W30 - 85IRE(216Gray) 100% Window Brightness uniformity White Pattern - Picture: Vivid(Medium) Copyright ©2010 LG Electronics Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 6: General Specification
2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 deg ~ 60 deg 2) Humidity : 0 % ~ 90 % Copyright ©2010 LG Electronics Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 7 108.00 VESA (SXGA) 1600*1200 74.537 59.869 161.00 UXGA Only FHD 1920*1080 66.587 59.934 138.50 WUXGA Only FHD (Reduced Blanking) Copyright ©2010 LG Electronics Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 27.000 24.000 HDTV 1080P 1920*1080 26.97 23.94 HDTV 1080P 1920*1080 33.75 30.000 HDTV 1080P 1920*1080 33.71 29.97 HDTV 1080P Copyright ©2010 LG Electronics Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9: Adjustment Instruction
(5) Click “Auto” tab and set as below (6) Click “Run”. (7) After downloading, check “OK” message. (7) ÉÉÉ.OK Copyright ©2010 LG Electronics Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10: Adjustment Method
3) After turning VR502,voltage of D.M.M adjustment as same as Va voltage which on label of panel left/top (deviation; ±0.5V) 5. DDC EDID Write Confirmation Copyright ©2010 LG Electronics Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 0.329 0.329±0.002 0.329±0.002 0.003 0.003 0.003 [ PC (for communication through RS-232C) ==> UART Baud rate : 115200 bps Copyright ©2010 LG Electronics Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12 [CMD ID DATA] (DEFAULT) Cool Mid Warm Cool Warm R Gain G Gain B Gain R Cut G Cut B Cut Copyright ©2010 LG Electronics Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 Select Model Number by using R/C number(0~9) key or select Model Number by using (VOL +/-) in accordance with destination. Finally press (enter) key. Copyright ©2010 LG Electronics Inc. All rights reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 47: Exploded View
EXPLODED VIEW 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 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.

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42pj250-ua 42pj250-ub 50pj550 50pj550-ud

LG 42PJ250 Service Manual

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Summary of Contents for LG 42PJ250

Page 3: Safety Precautions

Page 4: Specifications

Page 6: General Specification

Page 9: Adjustment Instruction

Page 10: Adjustment Method

Page 14: Trouble Shooting Guide

Page 46: Block Diagram

Page 47: Exploded View

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LG 42PJ250 Service Manual

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