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Sharp LC-C3742U Service Manual
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Sharp LC-C3742U Service Manual

Lcd color television
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TopPage
SUPPLEMENT ATTACHED
This model is based on the LC-37D42U and is changed some parts. This Service Manual covers the modifications
alone. For the other points, refer to the LC-32/37D42U Service Manual.
DIFFERENCES FROM BASE MODEL
LIST OF CHANGED PARTS .................. . ............i
SAFETY PRECAUTION
Parts Guide
Parts marked with "
safety and performance of the set.
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.
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the

SERVICE MANUAL

LCD COLOR TELEVISION

MODEL
OUTLINE
CONTENTS
LC-C3742U
No. SX6Y7LCC3742U
LC-C3742U
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

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Summary of Contents for Sharp LC-C3742U

  • Page 1: Table Of Contents

    TopPage SUPPLEMENT ATTACHED LC-C3742U SERVICE MANUAL No. SX6Y7LCC3742U LCD COLOR TELEVISION LC-C3742U 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-C3742U LC-C3742U DIFFERENCES FROM BASE MODEL Service Manual LIST OF CHANGED PARTS Ref. No. Description LC-37D42U LC-C3742U Note PWB ASSEMBLIES ← MAIN Unit DUNTKD862FM04 — ← R/C, LED Unit DUNTKD909FM02 — ← KEY Unit DUNTKD910FM02 — ← AV TERMINAL Unit DUNTKD999FM04 —...

  • Page 3: Important Service Safety Precaution

    LC-C3742U LC-C3742U SAFETY PRECAUTION Service Manual IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING • Use an AC voltmeter having with 5000 ohm per volt, or higher, sen- sitivity or measure the AC voltage drop across the resistor.

  • Page 4: Precautions A Prendre Lors De La Reparation

    LC-C3742U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT • A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ...

  • Page 5: Precautions For Using Lead-Free Solder

    LC-C3742U PRECAUTIONS FOR USING LEAD-FREE SOLDER 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: Precautions In Servicing The Hdcp-Key Rom

    LC-C3742U PRECAUTIONS IN SERVICING THE HDCP-KEY ROM Applied part: HDCP-KEY ROM IC8451 RH-IXB979WJQZY (updated ROM) The HDCP-KEY ROM shall be protected and managed for its information inside. In servicing this ROM, therefore, take the following information pro- tection/management measures. 1) When disposing of the component parts and PWBs, destruct the IC itself in a proper way.
  • Page 7 LC-C3742U PartsGuide PARTS GUIDE No. SX6Y7LCC3742U Note: The reference numbers on the PWB LC-C3742U are arranged in alphabetical order. MODEL CONTENTS CABINET AND MECHANICAL REPLACEMENT ITEM) PARTS SERVICE JIGS (USE FOR SUPPLIED ACCESSORIES SERVICING) PACKING PARTS (NOT Parts marked with "...
  • Page 8 LC-C3742U [1] CABINET AND MECHANICAL PARTS KEY Unit 50-2 50-1 1-10 1-10 1-10 R/C, LED Unit POWER Unit MAIN Unit AV TERMINAL Unit...
  • Page 9 LC-C3742U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [1] CABINET AND MECHANICAL PARTS Front Cabinet Ass'y CCABAB633WJ02 Front Cabinet Not Available LED Cover Not Available Front Cover Not Available Badge, SHARP Not Available SP-Net HPNLSA101WJSB Spacer, x2 PSPAHA416WJZZ Spacer, x2...
  • Page 10 LC-C3742U [2] SUPPLIED ACCESSORIES Cable Band Cable Clamp AC Cord Remote Control Unit Operation Manual "AAA" Size Battery Stand Unit X9-1 PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [2] SUPPLIED ACCESSORIES Cable Band LHLDWA083WJ00 Cable Clamp LHLDWA131WJKZ AC Cord...
  • Page 11 LC-C3742U [3] PACKING PARTS (NOT REPLACEMENT ITEM)
  • Page 12 LC-C3742U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [3] PACKING PARTS (NOT REPLACEMENT ITEM) Packing Case SPAKCD295WJZZ Stand Case SPAKFB132WJZZ Stand Pad SPAKFB133WJZZ Wrapping Paper (Monitor) SPAKPA795WJZZ Mirror Mat Base SPAKPA797WJZZ Mirror Mat Sup SPAKPA798WJZZ Packing Add. SPAKXB320WJZZ Polyethylene Bag...
  • Page 13 LC-C3742U MEMO © COPYRIGHT XXXX BYSHARP 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.
  • Page 14 LC-C3742U COPYRIGHT 2007 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.
  • Page 15 OUTLINE In this Service Manual, only parts in the LCD module are shown. For the other points, refer to the LC-37D42U/LC- 37D43U/LC-C3742U (S06X9LC32D42U/SX6Y9LC37D43U/SX6Y7LCC3742U) Service Manual. Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
  • Page 16 OUTLINE AND ADJUSTMENT Service Manual [1] Outline In this Service Manual, only parts in the LCD module are shown. For the other points, refer to the LC-37D42U/LC-37D43U/LC-C3742U (S06X9LC32D42U/SX6Y9LC37D43U/SX6Y7LCC3742U) Service Manual. [2] Adjustment When replacing the LCD control PCB, follow these steps to adjust VCOM.
  • Page 17 LC-37D42U/LC-37D43U/LC-C3742U PartsGuide PARTS GUIDE LCD COLOR TELEVISION LC-37D42U LC-37D43U LC-C3742U MODELS CONTENTS LCD MODULE Assembly Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
  • Page 18 LC-37D42U/LC-37D43U/LC-C3742U [1] LCD MODULE Assembly...
  • Page 19 LC-37D42U/LC-37D43U/LC-C3742U PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [1] LCD MODULE Assembly LCD Module Ass'y R1LK370T3LZ5BW Vessel (Top) CANGTA274WJ01 Vessel (Bottom) CANGTA277WJ01 Vessel (L, R), x2 CANGTA275WJ01 Panel Holder Ass'y CHLDZA701WJ01 Spacer Ass'y, x2 CHLDZA711WJ01 Reflection Sheet, x2 PSLDK2674TPNZ...
  • Page 20 LC-37D42U/LC-37D43U/LC-C3742U COPYRIGHT © 2007 BY SHARP CORPORATION ALL RIGHTS RESERVED. No Part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.