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 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 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 28 Aug., 2008 P/NO : MFL49708305 Printed in Korea...

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