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LG 32LG4000-ZA Service Manual

LG 32LG4000-ZA Service Manual

Lcd tv/dvd combo, chassis: ld86a
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LCD TV/DVD Combo
SERVICE MANUAL
CHASSIS : LD86A
MODEL : 32LG4000
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
32LG4000-ZA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 32LG4000-ZA

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV/DVD Combo SERVICE MANUAL CHASSIS : LD86A MODEL : 32LG4000 32LG4000-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............10 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................22 EXPLODED VIEW .................. 24 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
  • Page 3 An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 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 © 2008 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 © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 32” LGD 0.510(H) x 1.53(V) Back Light 32” LGD 12 EEFL Display Colors 16.7M (16,777,216) Coating 3H, AG Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 DSS863 (DVS KOREA) DVD-R/RW, DVD+R/RW Video CD, CVD, SVCD CD-R/RW, CD-Audio, MP3 Audio CD Digital Audio (CD TEXT), JPEG Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 60.123 75.029 78.75 1280*768 47.78 59.87 79.5 WXGA 1360*768 47.72 59.8 84.75 WXGA 1366*768 47.56 59.6 84.75 WXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 1280*768 47.78 59.87 79.5 WXGA HDCP 1360*768 47.72 59.8 84.75 WXGA HDCP 1366*768 47.56 59.6 84.75 WXGA HDCP Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 DTV/ATV test on production line. Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 * Display and Sound check is executed by Remote Pattern : 65 in Pattern Generator (MSPG-925 series) controller. Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - Set Input to RGB and connect D-sub cable to set - Measurement Condition: (100~240V@ 50/60Hz) - Confirm DPM operation at the state of screen without Signal Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...
  • Page 13 *: Serial No : Controlled / Data:01 **: Month : Controlled / Data:00 ***:Year : Controlled ****:Check sum Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 40,60,90 10 : DTV 20 : SCART1 30 : SCART2 40 : Component 60 : RGB 90 : HDMI Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 After all cables connect is removed to PSU, the AC voltage Replace main board. marking is authorized on manual. When ST-BY 5V, +15V are not operated, replace PSU. Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Before change Main Board, Change Main bord. S/W download and set White Balance value. Check S/W version and White Balance value. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 TU500_ (Check Pin18, Pin21,22) pin24~pin34) Pin19) Same as Block A. Check the Power. Check the Tuner. Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Check the input source. normal?(Check R733, 734,735) If there is normal status, Replace main board. Same as Block A. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Switching IC normal? Check the IC902. (Check IC902) If there is normal status, Replace main board. Same as Block A. Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Before change Main Board, Change Main bord. S/W download and set White Balance value. Check S/W version and White Balance value. Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 After checking thoroughly all path once again, You Can you see the normal waveform? should decide to replace LGE7363 or not. Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 BLOCK DIAGRAM 1. MAIN PCM_CD_ON TS_Parallel PCM_ADD PCM_DATA TS_Serial TV Tuner TV Tuner Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 2. DVD Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 Aug., 2008 P/NO : MFL49708305 Printed in Korea...

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