LG 42CQ610H Service Manual
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LG 42CQ610H Service Manual

LG 42CQ610H Service Manual

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See also: Owner's Manual , Quick Reference Manual
LCD TV

SERVICE MANUAL

CHASSIS : LA1EZ
MODEL : 42CQ610H
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67406206(1204-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42CQ610H-UA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 42CQ610H

  • 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 : LA1EZ MODEL : 42CQ610H 42CQ610H-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67406206(1204-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............6 TROUBLESHOOTING ................13 BLOCK DIAGRAM .................. 21 EXPLODED VIEW .................. 22 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 2 - 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 © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 3 - Only for training and service purposes...

  • Page 4: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 4 - Only for training and service purposes...

  • Page 5: Hdmi Input

    HDTV 1080P 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 5 - Only for training and service purposes...

  • Page 6: Adjustment Instruction

    => Caution: LA1E* chassis support only UC-232A driver. ( only use this one.) Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 6 - Only for training and service purposes...
  • Page 7 - Pattern : Horizontal 100% Color Bar Pattern - Pattern level: 0.7±0.1 Vp-p - Image (3) Must use standard cable Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 7 - Only for training and service purposes...

  • Page 8: White Balance Adjustment

    * Analog (RGB) EDID table [CHECK SUM : ED] ※ Pattern Generator Signal Source ※If TV internal pattern is used, not needed Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 8 - Only for training and service purposes...
  • Page 9 - In case of LCD, Back-light on should be checked using no B Cut signal or Full-white pattern. Warm R Gain G Gain B Gain R Cut G Cut Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 9 - Only for training and service purposes...
  • Page 10 ▪ After final inspection, press In-Stop key of the Adj. R/C and check that the unit goes to Stand-by mode Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 10 - Only for training and service purposes...
  • Page 11 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 11 - Only for training and service purposes...
  • Page 12 UTC-1000 TOP2 <- -> JIG 11pin Connection UTC-1000 RF1 <- -> b_LAN RF IN UTC-1000 LAN <- -> PC LAN Port Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 12 - Only for training and service purposes...

  • Page 13: Troubleshooting

    Check IIC line or replace IC1602 Communication status Check IR input state of IC1602 Check IR board 57pin Re-download PTC Micom Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
  • Page 14 Check tuner 3.3V power L3703 Check tuner 1.8V power IC3703 Replace IC3703 2pin : 1.8V Check Mstar LVDS output Replace IC101 Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 14 - Only for training and service purposes...
  • Page 15 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 15 -...
  • Page 16 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 16 -...
  • Page 17 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 17 -...
  • Page 18 Check Audio AMP output Replace L503,L504,L505,L506 L503,L504,L505,L506 Replace IC501 Check IC501 Check C250 (SIF signal to IC101) Replace IC101 Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 18 - Only for training and service purposes...
  • Page 19 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 19 -...
  • Page 20 This board has big problem because Main chip (Mstar) have some troubles. After checking thoroughly all path once again, You should decide to replace Mstar or not. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 20 -...

  • Page 21: Block Diagram

    BLOCK DIAGRAM Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 21 - Only for training and service purposes...

  • Page 22: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 24 P i l l o w s p e a k e r w s p e a k e r / H P Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 25 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 26 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Power Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 28 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN2, HW OPT Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AMP(NTP7400L) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 30 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AV jack Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. P r o : i d i o m Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. B - l a n & T u n e r Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RS232C Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. E x t e r n a l s p e a k e r Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 36 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FLASH/EEPROM/GPIO Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 2 0 1 1 . 1 2 . 0 1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. KEY/IR Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. S - f l a s h Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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