TFT-LCD TV

Chassis Model

GMS40HE

LE40M71B

SERVICE

Manual

Fashion Feature

- Luxurious Slim Design - Supreme Picture Quality - Supreme Sound Quality - Supreme Convenience Quality - Convenience for Users
Copyright 2006 by Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Samsung Electronics Co., Ltd. LE40M71B Service Manual First edition June 2006. Printed in Korea. ii
Trademarks Samsung is the registered trademark of Samsung Electronics Co., Ltd. LE40M71B and MacMaster Cable Adapter are trademarks of Samsung Electronics Co., Ltd. Macintosh, Power Macintosh are trademarks of Apple Computer, Inc. All other trademarks are the property of their respective owners.

Contents

1. Precautions 1-1 Safety Precautions 1-2 Servicing Precautions 1-3 Static Electricity Precautions 1-4 Installation Precautions 1-1 1-1 1-2 1-2 1-3
2. Product specifications 2-1 Fashion Feature 2-2 LE40M71B Specifications 2-3 Spec Comparison 2-4 Option Specification

2-1 2-1 2-2 2-3 2-4

3. Alignments and Adjustments 3-1 Service Instruction 3-2 How to Access Service Mode 3-3 Factory Data 3-4 Service Adjustment 3-5 Software Upgrade

3-1 3-1 3-2 3-3 3-6 3-9

4. Trouble shooting 4-1 First Checklist for Troubleshooting 4-2 Checkpoints by Error Mode

4-1 4-1 4-2

5. Exploded View and Parts List 5-1 LE40M71B Exploded View 5-2 LE40M71B Parts List

5-1 5-1 5-2

6. Electrical Parts List 6-1 LE40M71B Parts List

6-1 6-1

7. Block Diagram
8. Wiring Diagram 8-1 Wiring Diagram 8-2 Main Board Layout 8-3 PIN characteristic 8-4 Power Board Layout

8-1 8-1 8-2 5-3 8-6

9. Schematic Diagrams
10. Operating Instructions and Installation 10-1 Front 10-2 Connection Panel 10-3 Remote Control 10-4 Installing the Stand 10-5 Installing the Wall Mount Kit 10-1 10-1 10-2 10-4 10-5 10-5
11. Disassembly and Reassembly 11-1 Disassembly 11-2 Reassembly

11-1 11-1 11-5

12. PCB Diagram 12-1 Main PCB Layout 12-2 SMPS PCB Layout

12-1 12-1 12-2

13. Circuit Descriptions 13-1 Block description 13-2 Main Block 13-3 IP BOARD

13-1 13-1 13-3 13-4

14. Reference Infomation 14-1 Technical Terms 14-2 Pin Assignments 14-3 Timing Chart 14-4 Panel Description
14-1 14-1 14-4 14-7 14-11
- This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do, Korea, 443-742 Printed in Korea P/N : BN82-00144A-00 URL : http://itself.sec.samsung.co.kr/