Sharp LC-42BT10U Service Manual
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Sharp LC-42BT10U Service Manual

Sharp LC-42BT10U Service Manual

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TopPage
This model is based on the LC-42D72U and is changed some parts. This Service Manual covers the modifications
alone. For the other points, refer to the LC-42D72U (No. S17B9LC42D72U) Service Manual.
LIST OF CHANGED PARTS ...................................... i
CHAPTER 1. SPECIFICATIONS
[1]
SPECIFICATIONS .................................................1-1
[1]
OPERATION MANUAL ..........................................2-1
[1]
DIMENSIONS ........................................................3-1
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.

SERVICE MANUAL

LCD COLOR TELEVISION

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.
OUTLINE
CONTENTS
No. S57J9LC42BT10
LC-42BT10U
[1]
REMOVING OF MAJOR PARTS ...........................4-1
[1]
OVERALL WIRING DIAGRAM ..............................5-1
[2]
SYSTEM BLOCK DIAGRAM .................................5-3
[1]
[2]
TERMINAL Unit......................................................6-2
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LC-42BT10U

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  • Page 1: Table Of Contents

    TopPage LC-42BT10U SERVICE MANUAL No. S57J9LC42BT10 LCD COLOR TELEVISION LC-42BT10U 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: Outline And Differences From Base Model Outline

    LC-42BT10U LC-42BT10U OUTLINE AND DIFFERENCES FROM BASE MODEL Service Manual OUTLINE This model is based on the LC-42D72U and is changed some parts. This Service Manual covers the modifications alone. For the other points, refer to the LC-42D72U (No. S17B9LC42D72U) Service Manual.
  • Page 3 LC-42BT10U Ref. No. Description LC-42D72U LC-42BT10U Note C3385 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change C3396 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change C3398 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change C3403 Capacitor, 10 16V Ceramic RC-KZA510WJPZY RC-KZA237WJZZY Change C3405...
  • Page 4 LC-42BT10U Ref. No. Description LC-42D72U LC-42BT10U Note R3554 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change R3555 Resistor, 33 1/16W Metal Oxide VRK-CD1JJ330JY VRS-CK1JF330JY Change R3563 Resistor, 82 1/16W Metal Oxide VRK-CD1JJ820JY VRS-CK1JF820JY Change R3565 Resistor, 82 1/16W Metal Oxide...

  • Page 5: Safety Precaution Important Service Safety Precaution

    LC-42BT10U LC-42BT10U 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 6: Precautions A Prendre Lors De La Reparation

    LC-42BT10U 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. • A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ...

  • Page 7: Precautions For Using Lead-Free Solder

    LC-42BT10U 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 8: Precautions In Servicing The Hdcp-Key Rom

    LC-42BT10U PRECAUTIONS IN SERVICING THE HDCP-KEY ROM Applied part: HDCP-KEY ROM IC8451 RH-IXB963WJQZQ (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 9: Specifications

    The dimensional drawings are shown on the inside back cover. 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.

  • Page 10: Chapter 2. Operation Manual

    LC-42BT10U CHAPTER 2. LC-42BT10U OPERATION MANUAL Service Manual [1] OPERATION MANUAL Part names TV (Front) Remote control sensor OPC indicator OPC sensor* SLEEP indicator POWER indicator NOTE *OPC: Optical Picture Control TV (Rear/Top) Channel buttons INPUT button HDMI terminal (INPUT 5)
  • Page 11 LC-42BT10U Part names TV POWER: Switch the TV power on or enters standby. Remote control unit DISPLAY: Display the channel information. SOURCE POWER: Turns the power of the external equipment on and off. External equipment operational buttons: Operate the external equipment.

  • Page 12: Quick Reference

    Setting the TV on the wall CAUTION This TV should be mounted on the wall only with the AN-37AG2/AN-52AG1 (SHARP) wall mount bracket. The use of other wall mount brackets may result in an unstable installation and may cause serious injuries.

  • Page 13: Troubleshooting

    LC-42BT10U Appendix Troubleshooting Problem Possible Solution No power Check if you pressed TV POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV. Is the AC cord disconnected? Has the power been turned on? Unit cannot be operated.

  • Page 14: Connecting A Pc

    LC-42BT10U Preparation Connecting a PC When connecting to a PC with an HDMI terminal. (INPUT 4 or 5) HDMI cable (commercially available) NOTE The HDMI terminals only support digital signal. When connecting to a PC with a DVI terminal. (INPUT 6)

  • Page 15: Basic Adjustment Settings

    LC-42BT10U Basic adjustment settings Menu items for TV/INPUT 1/2/3 Menu items for HDMI/DVI Picture Picture Backlight Backlight Contrast Contrast Brightness Brightness Color Color Tint Tint Sharpness Sharpness Advanced Advanced Color Temp. Color Temp. Black Black Fine Motion Fine Motion 3D-Y/C...

  • Page 16: Chapter 3. Dimensions Dimensions

    LC-42BT10U CHAPTER 3. LC-42BT10U DIMENSIONS Service Manual [1] DIMENSIONS Unit: inch/(mm) (134) (1031) (933.0) (200) 3 – 1...

  • Page 17: Chapter 4. Removing Of Major Parts

    LC-42BT10U CHAPTER 4. LC-42BT10U REMOVING OF MAJOR PARTS Service Manual [1] REMOVING OF MAJOR PARTS 1. Remove the SD Card Cover. 2. Remove the Hole Cover. 3. Remove the 12 lock screws, 5 lock screws and detach the Rear Cabinet.
  • Page 18 LC-42BT10U 4. Remove the 4 lock screws and detach the Chassis Fixing Angle. 5. Remove the 4 lock screws and detach the Center Angle (L) (R). 6. Remove the 2 lock screws and detach the Stand Assist Angle. 7. Remove the 2 lock screws and detach the Stand Assist Cover.

  • Page 19: Key Unit

    LC-42BT10U 10.Disconnect all the connectors from all the PWBs. 11.Remove the Top Cover Ass’y. Remove the 1 lock screw from the Top Cover Ass’y and detach the KEY Unit. Top Cover Ass'y KEY Unit 4 – 3...

  • Page 20: Main Unit

    LC-42BT10U 12.Remove the 7 lock screws and detach the Tray Chassis. 13.Remove the 2 lock screws, 3 lock screws, 2 lock screws, 2 lock screws and detach the Terminal Angle. 14.Remove the 7 lock screws and detach the POWER Unit.
  • Page 21 LC-42BT10U 20.Remove the 6 lock screws and detach the Lug Angle Top (L) (R). 21.Remove the 3 lock screws and detach the Lug Angle Top Center. 22.Remove the 9 lock screws and detach the Lug Angle Bottom. 23.Remove the LCD Panel Module.

  • Page 22: Chapter 5. Overall Wiring/Block Diagram

    LC-42BT10U CHAPTER 5. LC-42BT10U OVERALL WIRING/BLOCK DIAGRAM Service Manual [1] OVERALL WIRING DIAGRAM 5 – 1...
  • Page 23 LC-42BT10U 5 – 2...

  • Page 24: System Block Diagram

    LC-42BT10U [2] SYSTEM BLOCK DIAGRAM MA : SC502/SC1102 (23PIN) 5 – 3...
  • Page 25 LC-42BT10U 5 – 4...
  • Page 26 LC-42BT10U MEMO 5 – 5...

  • Page 27: Chapter 6. Schematic Diagram

    LC-42BT10U CHAPTER 6. LC-42BT10U SCHEMATIC DIAGRAM Service Manual [1] DESCRIPTION OF SCHEMATIC DIAGRAM 1. VOLTAGE MEASUREMENT CONDITION: 1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

  • Page 28: Terminal Unit

    LC-42BT10U [2] TERMINAL Unit • TERMINAL Unit-1/2 DUNTKD935FM12 6 – 2...
  • Page 29 LC-42BT10U 6 – 3...
  • Page 30 LC-42BT10U • TERMINAL Unit-2/2 6 – 4...
  • Page 31 LC-42BT10U DUNTKD935FM12 6 – 5...
  • Page 32 LC-42BT10U MEMO 6 – 6...

  • Page 33: Parts Guide

    LC-42BT10U PartsGuide PARTS GUIDE No. S57J9LC42BT10 Note: The reference numbers on the PWB LC-42BT10U are arranged in alphabetical order. MODEL CONTENTS DUNTKD935FM12 (TERMINAL Unit) PRINTED WIRING BOARD ASSEMBLIES (NOT REPLACEMENT ITEM) CABINET AND MECHANICAL PARTS PRINTED WIRING BOARD ASSEMBLY SUPPLIED ACCESSORIES...
  • Page 34 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [1] PRINTED WIRING BOARD ASSEMBLIES (NOT REPLACEMENT ITEM) R/C, LED Unit DUNTKD909FM02 KEY Unit DUNTKD910FM02 TERMINAL Unit DUNTKD935FM12 [2] PRINTED WIRING BOARD ASSEMBLY MAIN Unit DUNTKD934FM10 RDENCA184WJQZ POWER Unit [3] LCD PANEL (NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPEN- DENTLY.)
  • Page 35 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKD934FM10 (MAIN Unit) C9638 Capacitor, 10 16V Ceramic RC-KZA237WJZZY C9647 Capacitor, 10 16V Ceramic RC-KZA237WJZZY C9649 Capacitor, 10 16V Ceramic RC-KZA237WJZZY C9652 Capacitor, 10 16V Ceramic RC-KZA237WJZZY C9653 Capacitor, 10 16V Ceramic...
  • Page 36 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [4] DUNTKD934FM10 (MAIN Unit) R9208 Resistor, 10k 1/16W Metal Oxide VRS-CK1JF103JY R9301 Resistor, 10k 1/16W Metal Oxide VRS-CK1JF103JY R9302 Resistor, 10k 1/16W Metal Oxide VRS-CK1JF103JY [5] DUNTKD935FM12 (TERMINAL Unit) C501 Capacitor, 1 16V Ceramic...
  • Page 37 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [5] DUNTKD935FM12 (TERMINAL Unit) C2737 Capacitor, 0.1 50V Ceramic VCKYCY1HB104KY C2738 Capacitor, 0.1 50V Ceramic VCKYCY1HB104KY C2739 Capacitor, 0.1 50V Ceramic VCKYCY1HB104KY C2740 Capacitor, 0.1 50V Ceramic VCKYCY1HB104KY C2741 Capacitor, 150p 50V Ceramic...
  • Page 38 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [5] DUNTKD935FM12 (TERMINAL Unit) P2703 Plug, 4pin (SP) QPLGNA173WJZZY P2704 Connector, 23pin QCNCMA250WJZZ Q501 Transistor, 2SA1530A-T112-1R VS2SA1530AR-1Y Q502 Transistor, 2SC2735JC21TL VS2SC2735//-1Y Q503 Transistor, 2SA1530A-T112-1R VS2SA1530AR-1Y Q504 VS2SC2735//-1Y Transistor, 2SC2735JC21TL Q505 Transistor, 2SA1530A-T112-1R...
  • Page 39 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [5] DUNTKD935FM12 (TERMINAL Unit) R587 Resistor, 560 1/16W Metal Oxide VRS-CY1JF561JY R588 Resistor, 560 1/16W Metal Oxide VRS-CY1JF561JY R589 Resistor, 560k 1/16W Metal Oxide VRS-CY1JF564JY R590 Resistor, 560k 1/16W Metal Oxide...
  • Page 40 LC-42BT10U [6] CABINET AND MECHANICAL PARTS KEY Unit 1-11 R/C, LED Unit 1-10 POWER Unit MAIN Unit TERMINAL Unit...
  • Page 41 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [6] CABINET AND MECHANICAL PARTS Front Cabinet Ass'y CCABAB600WJ06 Front Cabinet Not Available LED Cover Not Available Front Cover Not Available Badge, SHARP Not Available Shine Trim HDECSA001WJSB SP-Net HPNLSA090WJSB Spacer, x6...
  • Page 42 LC-42BT10U [7] SUPPLIED ACCESSORIES Stand Hole Cover Wire Holder Cable Band Cable Clamp AC Cord Remote Control Unit Operation Manual "AAA" Size Battery PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [7] SUPPLIED ACCESSORIES Stand Hole Cover HDECPA035WJSA Wire Holder...
  • Page 43 LC-42BT10U [8] PACKING PARTS (NOT REPLACEMENT ITEM)
  • Page 44 LC-42BT10U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY [8] PACKING PARTS (NOT REPLACEMENT ITEM) Packing Case (Bottom) SPAKCD085WJZZ Packing Case SPAKCD592WJZZ Wrapping Paper (Monitor) SPAKPA774WJZZ Packing Add. SPAKXB560WJZZ Polyethylene Bag SSAKA0101GJZZ Polyethylene Bag SSAKAA032WJZZ No. Label TLABKA009WJZZ [9] SERVICE JIG (USE FOR SERVICING)
  • Page 45 LC-42BT10U 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 46 LC-42BT10U 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.

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