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Sharp LC-37GB5U Service Manual

Lcd color television
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See also: Operating Manual
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
This model is based on the LC-37D7U and is equipped with a redesigned speaker, and is changed some
function. This Service Manual covers the modifications alone. For the other points, refer to the LC-26/32/
37D7U Service Manual.
» LIST OF CHANGED PARTS ...........................................................................................................................2
» IMPORTANT SERVICE SAFETY PRECAUTION ........................................................................................ 3
» SPECIFICATIONS........................................................................................................................................6
» OPERATION MANUAL ................................................................................................................................7
» DIMENSIONS ............................................................................................................................................14
» REMOVING OF MAJOR PARTS ................................................................................................................15
» BLOCK DIAGRAM .....................................................................................................................................22
» OVERALL WIRING DIAGRAM ...................................................................................................................24
» PARTS LIST ...............................................................................................................................................26
» PACKING OF THE SET .............................................................................................................................31

SHARP CORPORATION

SERVICE MANUAL

LCD COLOR TELEVISION

LC-37GB5U
MODEL
OUTLINE
CONTENTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LC-37GB5U
S45H5LC37GB5U
Page

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Summary of Contents for Sharp LC-37GB5U

  • Page 1: Table Of Contents

    LC-37GB5U SERVICE MANUAL S45H5LC37GB5U LCD COLOR TELEVISION LC-37GB5U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

  • Page 2: List Of Changed Parts

    LC-37GB5U LIST OF CHANGED PARTS LC-37D7U → LC-37GB5U Ref.No. Description LC-37D7U LC-37GB5U Note PWB ASSEMBLIES AV Unit DUNTKC971WE01 DUNTKC971WE03 *Some parts changed AV Unit DUNTKD115WE01 DUNTKD115WE03 *Some parts changed KEY Unit DUNTKC972WE01 DUNTKC972WE03 No parts changed KEY Unit DUNTKD116WE01 DUNTKD116WE03...

  • Page 3: Important Service Safety Precaution

    LC-37GB5U IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: » Use an AC voltmeter having with 5000 ohm per volt,...
  • Page 4 LC-37GB5U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une...
  • Page 5 LC-37GB5U Precautions for using lead-free solder 1 Employing lead-free solder "PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

  • Page 6: Specifications

    ( 2), Cable clamp ( 1), Cable tie ( 1) As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some...

  • Page 7: Operation Manual

    LC-37GB5U OPERATION MANUAL...
  • Page 8 LC-37GB5U...
  • Page 9 LC-37GB5U...
  • Page 10 LC-37GB5U...
  • Page 11 LC-37GB5U...
  • Page 12 LC-37GB5U...
  • Page 13 LC-37GB5U...

  • Page 14: Dimensions

    LC-37GB5U DIMENSIONS Unit: inch/(mm) (677) (109) 4 (108) (1102) (822.6) (307) 200)

  • Page 15: Removing Of Major Parts

    LC-37GB5U REMOVING OF MAJOR PARTS 1. Remove the 4 lock screws 1 from the stand, and detach the stand. 2. Detach the Terminal Cover.2 3. Detach the SD Card Cover.3 4. Remove the 33 lock screws 4 from the Rear Cabinet, and detach the Rear Cabinet.
  • Page 16 LC-37GB5U 5. Remove the 7 lock screws 5 and detach the Center Angle. 6. Remove the KEY PWB. 6-1. Remove the 2 lock screws 6 from the Top Control Cover. 6-2. Remove the 3 lock screws 7 from the KEY PWB.
  • Page 17 LC-37GB5U 9. Disconnect all the connectors from all the PWBs. (SC4651) (CN7404) (CN7542) (SC4652) (P7705) (P7704) (SC4601) (P7707) (P2004) (CN7405) (CN7543) (CN7501) (CN704) (CN7541) (P3804) (P2006) (P2003) (P1105) (CN7406) (CN7544) (P1802) (P5703) (SC3200) (CN703) (CN706) (P2501) (P3805) (CN7407) (CN7545) (CN7502)
  • Page 18 LC-37GB5U 14. Remove the 6 lock screws r. Detach the Main PWB and Main Shield C. 15. Remove the AV PWB. 15-1. Remove the 3 lock screws t, 2 screws y, and detach the AV PWB. 15-2. Remove the 1 lock screw i and detach the Jack Cover B.
  • Page 19 LC-37GB5U 17. Remove the 6 lock screws a and detach the Power PWB. 18. Remove the 6 lock screws s. Detach the INVERTER-GND A and INVERTER-GND B PWB. 19. Remove the 8 lock screws d. Detach the INVERTER A and INVERTER B PWB.
  • Page 20 LC-37GB5U 22. Remove the 4 lock screws 26 from the 37" LCD Panel Unit, and detach the 37" LCD Panel Unit. 23. Detach the sheet spacer 1 and sheet spacer 2. 24. Detach the Diffusion and Reflection/Deflection Sheets and Diffusion Panel.
  • Page 21 LC-37GB5U - M E M O -...

  • Page 22: Block Diagram

    LC-37GB5U LC-37GB5U BLOCK DIAGRAM Ë SYSTEM BLOCK DIAGRAM...

  • Page 23: Overall Wiring Diagram

    LC-37GB5U LC-37GB5U OVERALL WIRING DIAGRAM...

  • Page 24: Parts List

    USA: Contact your nearest SHARP Parts Distributor to order. 3. NO. DE PIECE 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll- in CANADA: Contact SHARP Electronics of Canada Limited Free; 1-800-BE-SHARP Phone (416) 890-2100 MARK: SPARE PARTS-DELIVERY SECTION Ref.

  • Page 25: Cabinet And Mechanical Parts

    LC-37GB5U Ref. No. Part No. Description Code Ref. No. Part No. Description Code PCOVUA056WJZZ X LED Shading Cover CABINET AND MECHANICAL PARTS PMLT-A141WJZZ X Gasket, x2 PMLT-A191WJZZ X Gasket, x2 PMLT-A196WJZZ X Gasket CCABAA854WJ01 X Front Cabinet Ass'y PMLT-A197WJZZ X Gasket (DVI-TOP) Not Available –...
  • Page 26 LC-37GB5U Ref. No. Part No. Description Code Ref. No. Part No. Description Code CABINET AND MECHANICAL PARTS (Continued) PCLiCA004WJKZ X Rivet PMLT-A208WJZZ X Gasket (ANT-PNL) PMLT-A220WJZZ X Gasket (DIJIPANL) PSLDMA755WJZZ X Conduct Tape QEARPA176WJZZ X Copper-Sheet RCORF0103CEZZ X [PA],[DS]-Core, x2...
  • Page 27 LC-37GB5U CABINET AND MECHANICAL PARTS 6-2-3 6-2-8 6-2-1 6-2-9 6-2-4 6-2-2 6-2-6 6-2-8 6-2-10 6-2-5 6-2-6 6-2-7 6-10 6-11 6-2-4 6-11 6-10...

  • Page 28: Packing Parts

    LC-37GB5U Ref. No. Part No. Description Code Ref. No. Part No. Description Code SERVICE JIGS PACKING PARTS (USE FOR SERVICING) (NOT REPLACEMENT ITEM) SPAKCB786WJZZ – Packing Case — QCNW-C222WJQZ J L=1000mm 80pins FFC Pitch=0.5mm AW SPAKFA809WJZZ – Stand Pad —...

  • Page 29: Packing Of The Set

    LC-37GB5U PACKING OF THE SET...
  • Page 30 LC-37GB5U COPYRIGHT © 2005 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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