LG 32LH4000 Service Manual

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Owner's manual (194 pages)

Table Of Contents

SERVICE MANUAL

CHASSIS : LD91A

MODEL : 32LH4000

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

North/Latin America

Europe/Africa

Asia/Oceania

32LH4000-ZA

Internal Use Only

http://aic.lgservice.com

http://eic.lgservice.com

http://biz.lgservice.com

Table of Contents

Summary of Contents for LG 32LH4000

Page 1: Service Manual
Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LD91A MODEL : 32LH4000 32LH4000-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Page 2: Table Of Contents
PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................17 EXPLODED VIEW .................. 18 SVC. SHEET ....................Copyright ©2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 3: Product Safety
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright ©2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 4: Servicing Precautions
Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright ©2009 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright ©2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6: Specification
760.0 (H) x 450.0 (V) x 48.0 (D) Pixel Pitch 0.36375 mm(D) Back Light 14EEFL Display Colors 1.06Billion(FHD LGD),16.7M (others) Coating 3H, AG Copyright ©2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7 HDTV 1080i 1920x1080 33.75 60.00 HDTV 1080i 1920x1080 33.72 59.94 HDTV 1080i 1920x1080 56.250 HDTV 1080p 1920x1080 67.5 HDTV 1080p Copyright ©2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 HDCP 1280*1024 63.595 60.0 108.875 SXGA HDCP 1600*1200 74.07 59.98 130.375 UXGA HDCP 1920*1080 66.647 59.988 138.625 WUXGA HDCP Copyright ©2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9: Adjustment Instruction
3. Click “Read” tab, and then load download file (XXXX.bin) by clicking “Read” fi lexxx.bin Copyright ©2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 4. RGB (PC : 1024 x 768 @ 60hz) 5. HDMI 6. PC Audio In * Display and Sound check is executed by Remote controller. Copyright ©2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11: Edid Data
C0. (when R/G/B Gain are all C0, it is the FULL Dynamic Range of Module) Copyright ©2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12: Auto Download
Digital : 1 ⓖ Vendor Specific(HDMI) Revision Digital : 3 INPUT MODEL NAME(HEX) HDMI1 67030C001000B82D HDMI2 67030C002000B82D HDMI3 67030C003000B82D Copyright ©2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 Confirm whether is normal or not when between power board's ac block and GND is impacted on 1.5kV(dc) or 2.2kV(dc) for one second Copyright ©2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14: Troubleshooting
IC(IC100) have some troubles. After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright ©2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 15 IC(IC100) have some troubles. After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright ©2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16 IC(IC100) have some troubles. After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright ©2009 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17: Block Diagram
BLOCK DIAGRAM 74LCX244 Buffer IC501 CI Slot (P500) 74LVC541A Buffer IC502 Tun er (TDFW-G235D) TU1200 Copyright ©2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18: Exploded View
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 26 Feb., 2009 P/NO : MFL50326801 Printed in Korea...

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32lh4000-za

LG 32LH4000 Service Manual

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SERVICE MANUAL

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