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LG 37LG5500 Service Manual
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LG 37LG5500 Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LD82D
MODEL : 37LG5500
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
37LG5500-ZB

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Summary of Contents for LG 37LG5500

  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LD82D MODEL : 37LG5500 37LG5500-ZB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    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: Product Safety

    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 Copyright 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • 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: Specification

    HDMI1(DTV)/DVI, HDMI2/3(DTV) HDMI ver 1.3, (Simplink HDMI1/2 Only) Audio Input(3EA) RGB/DVI Audio, Component, AV L/R Input SPDIF out(1EA) SPDIF out Copyright 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 - Picture : Dynamic (Cool) -0.03 0.333 +0.03 Green -0.03 0.275 +0.03 -0.03 0.610 +0.03 Blue -0.03 0.147 +0.03 -0.03 0.061 +0.03 Copyright 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 47.649 59.94 84.625 Supported 1280x1024 63.595 60.00 108.875 SXGA 1400x1050 65.150 60.00 122.50 SXGA 1920x1080 66.647 59.988 138.625 WUXGA Copyright 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 63.595 60.0 108.875 SXGA 1400x1050 65.160 60.0 122.50 SXGA 1600x1200 74.077 60.0 130.375 UXGA 1920x1080 66.647 59.988 138.625 WUXGA Copyright 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    1. Application Range 5. Substrate ADC Calibration This spec. sheet is applied to all of the LD82D chassis manufactured at LG TV Plant all over the world. 5.1. Adjustment of RF/AV Model : 202 / Pattern : 65 2. Specification.
  • Page 11 0x06 20 0x07 00 ⓔ => Detail EDID Options are below (a, b, c, d, e-1, e-2, f-1, f-2) Copyright 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 (Vol.+) key to operate the set , then it becomes automatically. 5) On bottom side of OSD, “Component OK” means the adjustment is completed. Copyright 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 Cool_Medium_Warm in order. When W/B is completed, you can see ‘OK’ on PC monitor. <Fig. 2> Connecting picture (On Automatic Control) Copyright 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 80. (When R/G/B GAIN are all 80, it is the FULL DYNAMIC Range of Module) Copyright 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Troubleshooting

    9. Check the Power Manufacture’s enterprise Module output circuit Module output circuit Board Output high meaning of a passage tension circuit Copyright 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Power Board(except the SC101 connection cable), authorizes the AC voltage marking on manual. When ST-BY 5V does not operate, replace Power Board. Copyright 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 After crisis COF of each board, check the normality operates If in case normality X,Y,Z? operates, correspondence COF Fail is replace the module. Copyright 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Is the LVDS cable Reconnect the normal? LVDS cable in P801. Is the IC700 (FLI8548) Replace the VSC Output normal? Copyright 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Operates the FIL8548 Replace VSC B/D VSC Board? IC(IC700)? Replace FIL8548 IC(IC700). Is normal the Replace Ctrl B/D. CtrlBoard of Module? Copyright 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 (6) In the case of becomes unusual display from SCART1 mode Is Video input of A/V jack Check the input source. normal? (JK1200) Same as Block A Copyright 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 IC1301 operates Replace IC1301 (except HDMI,DTV, refer to circuit diagram (NTP300A) Normal? RF) is no sound? Replace VSC BD Copyright 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22: Block Diagram

    BLOCK DIAGRAM(Vitiza2) Copyright 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 BLOCK DIAGRAM(Vitiza3) Copyright 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Exploded View

    EXPLODED VIEW Copyright 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 VITIAZ 2 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 27 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 29 VITIAZ 3 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 31 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 33 Apr., 2008 P/NO : MFL40944503 Printed in Korea...

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