LG 42PJ350R Service Manual

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Owner's manual (242 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 : PP01A MODEL : 42PJ350R 42PJ350R-MA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Printed in Korea P/NO : MFL62881410(1005-REV02)
Page 2: Table Of Contents
CONTENTS ..........................2 SAFETY PRECAUTIONS ......................3 SPECIFICATION.........................4 ADJUSTMENT INSTRUCTION ....................7 BLOCK DIAGRAM ........................15 EXPLODED VIEW ........................16 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: Specification
4) Humidity : 10 % ~ 90 % Input Voltage AC 100 V - 240 V, 50 / 60 Hz Maker : LGIT Copyright ©2010 LG Electronics Inc. All rights reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
Page 5 Rear 1EA, Side 1EA) RS-232C (1EA) Remote control USB Input (1EA) SD DivX, MP3, JPEG, PJ250R Rear USB only for service Copyright ©2010 LG Electronics Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6 - Warm, Cool : Color Temp. UI 30 Temperature 0.278 0.293 0.308 - Medium : Color Temp. UI 0 Warm 0.298 0.313 0.328 0.314 0.329 0.344 Copyright ©2010 LG Electronics Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7: Adjustment Instruction
(2) Use voltage : 3.3V (5 pin) (3) SCL : 15 pin (4) SDA : 12 pin (5) Tact time : about 2min and 30seconds Copyright ©2010 LG Electronics Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8: Memory Stick
( Fig. 2) (6) Select SW file (XXXX.bin) you want, push the “OK” Key. (7) S/W download process is excuted automatically. Copyright ©2010 LG Electronics Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9 Caution - Don’t Push “IN-STOP” key after PCB assembly adjustment. * PP01A/B/C Tool option Model Tool option 50PJ250R-TA 42PJ250R-ZA Copyright ©2010 LG Electronics Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 0 (RED) / 1 (RED/White) / 2 (Reserve) USB TYPE 0 (NONE) / 1 (PHOTO, MUSIC) / 2 (PHOTO, MUSIC, DivX) Copyright ©2010 LG Electronics Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 Hex Data Manufacturer ID 1E6D Version Digital : 1 Revision Digital : 3 <HDMI 3 : 256bytes> SIDE HDMI(HDMI 3) Copyright ©2010 LG Electronics Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12: Adjustment Method
(5) Both component and RGB ADC adjustment are executed automatically When ADC adjustment is finished, this OSD appear. (Fig. 4) Copyright ©2010 LG Electronics Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13: Remote Control
- Although it is SKD model, adjust area option in SET B-GAIN assemmbly process. - Don’t Push “IN-STOP” key after PCB assembly adjustment. Copyright ©2010 LG Electronics Inc. All rights reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14 Measured Mode Picture Mode Vivid Fresh Contrast Fresh Color Smart Power Saving DDC Adjustment Command Set Adjustment Adjustment Adjustment Copyright ©2010 LG Electronics Inc. All rights reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 16: Exploded View
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 16 - LGE Internal Use Only Copyright ©2010 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 17 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. INPUT INPUT Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
Page 18 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Key / Power / Power / LVDS / Option Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
Page 19 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Tuner/Amp/DDR Tuner / Amp / DDR Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
Page 20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Main Main Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
Page 22 . Rom update .Check B+(5V) 2.Replace Control B/D Move Move 1. Check Y-Sus/ Z-Sus Board Power problem Power problem Section 2. Replace defective B/D Section ※Refer to the Module label for each voltage <SVC R/C & Pattern> ⓒ LG Electronics. Inc.2009...
Page 23 IR B/D Check Input signal . RF Cable connection Power . SCART Cable connection LED ON? appear? . HDMI Cable connection . Component Cable … Latest S/W update Replace from GCSC Main B/D (Firmware Management) Normal Close ⓒ LG Electronics. Inc.2009...
Page 24 Power B/D before replace Y Drive B/D Check RF Cable Normal Check Tuner Picture Noise Connection Picture? & Replace Close Check Replace Normal 1. Check Z-Sus Board Normal Picture mode Dark Picture Module Picture? 2. Replace Board Picture? setting Close Close ⓒ LG Electronics. Inc.2009...
Page 25 Check RF Cable Normal Check Normal Connection Close Picture? S/W Version Bulletin? Picture? 1. Reconnection S/W Upgrade Check Normal Contact with signal distributor Tuner soldering Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close ⓒ LG Electronics. Inc.2009...
Page 26 1. Check Y Drive B/D Normal 1.Check CTRL B/D Normal of Connector (FPC) Normal Module Line/Bar 2. Replace Board Picture? 2.Replace Board Picture? on Y Drive B/D Close Close 1.Connector re-connection 2.Eliminate foreign material on FFC ⓒ LG Electronics. Inc.2009...
Page 27 Replace AC DET Signal RL_ON Signal Normal Voltage? Signal? Signal? Output voltage Power B/D on Power B/D on Power B/D on Power B/D Close Check Power B/D Check Main B/D Replace Power B/D Replace Main B/D ⓒ LG Electronics. Inc.2009...
Page 28 KEY Off Check This is not problem “Off Timer” Under watching Power Off History Set? Normal operation 2HOUR Off NO Signal Off “Off timer” Function off Move Don’t appear No Power problem Power Off History Section ⓒ LG Electronics. Inc.2009...
Page 29 (By connecting same output cable of other equipment) (S/W Upgrade etc) → DVD Player ,Set-Top-Box, different maker TV etc Check Audio IC Explain customer that Replace Main B/D Cause is RF Signal’s problem (Case 1) Cause is Equipment’s problem (case 2) ⓒ LG Electronics. Inc.2009...
Page 30 When turn off light Baterry of R/C Replace Power B/D or in room Replace Main B/D (Power B/D don’t have problem) If R/C operate, Normal Close Explain the customer operating? cause is interference from light in room. Replace R/C ⓒ LG Electronics. Inc.2009...
Page 31 < CHECK Item > 1. Dead pixel 2.Image sticking 3.Mal discharge 4.Module defect (V-Line/Bar, H-Line/Bar,,,) 5. In case of no picture, you can judge defect cause (Module or Main B/D) - If patterns appear, defect cause is Main B/D ⓒ LG Electronics. Inc.2009...
Page 32 1. Check connection (CTRL B/D, X B/D) Many irregular vertical lines 2. Check CTRL B/D 3. Replace CTRL B/D 1. Check connection (Y-Sus B/D ↔Panel) Horizontal Line or Bar 2. Check Y-Sus B/D 3. Replace Y-Sus B/D ⓒ LG Electronics. Inc.2009...
Page 33 TCP (Tape Carrier Package) is film Connector to connect between 2. Check bad soldering for IC connect with Electrode pattern Electrode PAD Of PANEL and on Chip resistance (Direct Bonding) on X B/D Y Drive B/D,Z-Sus B/D ▣ Defect symptom ⓒ LG Electronics. Inc.2009...
Page 34 Power B/D↔Main B/D (P813) (P1100) Checking Spec Remark Point P814 STBY 5V AC DET High(3.3V~5V) Error_DET Error_DET RL_ON High(3.3V~5V) M5_ON High(3.3V~5V) Vs-ON High(3.3V~5V) STBY STBY Check the other pin’s output RL_ON AC_DET M_ON AUTO_GND Wafer SMAW200-H18S2 ⓒ LG Electronics. Inc.2009...

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LG 42PJ350R Service Manual

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