Samsung GH17LS

ii GH17LS/GH17ES

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.

GH17LS/GH17ES Service Manual

First edition July 2001.

Printed in Korea.

Trademarks

Samsung is the registered trademark of Samsung

Electronics Co., Ltd.

GH17LS/GH17ES and MacMaster Cable Adapter

are trademarks of Samsung Electronics Co., Ltd.

Macintosh, Centris, Quadra, Duo Douk, and

Power Macintosh are trademarks of Apple

Computer, Inc.

All other trademarks are the property of their

respective owners.

Contents

Main TFT-LCD MONITOR GH17LS GH17ES Manual SERVICE TFT-LCD MONITOR CONTENTS Page Page GH17LS/GH17ES 1-1 1-1-1 Warnings 1-1-2 Servicing the LCD Monitor 1-1-3 Fire and Shock Hazard 1 Precautions 1-1 Safety Precautions 1-2-1 General Servicing Precautions 1 Precautions 1-2 GH17LS/GH17ES 1-3 Electrostatically Sensitive Devices (ESD) Precautions 1-2 Servicing Precautions 2 Product Specifications 2-1 Specifications 2-2 Pin Assignments 2-3 Timing Chart Page 3-1-1 Removing the Stand 3-1-2 Main Body Disassembly 3 Disassembly and Reassembly 3-1 Disassembly Page 4-1 Required Equipment 4-2 RS232 Jig Setup 4-3 Changing Board 4-4 Program memory (IC110) change 4 Alignments and Adjustments Page 5 Troubleshooting 5-1-1 No Power 5-1-2 No Power 5-2 No Video WAVEFORMS Page Page GH17LS/GH17ES 7-1 7 Electrical Parts List 7-1 Main PCB Parts 7-2 GH17LS/GH17ES GH17LS/GH17ES 7-3 7-4 GH17LS/GH17ES GH17LS/GH17ES 7-5 7-6 GH17LS/GH17ES GH17LS/GH17ES 7-7 7-8 GH17LS/GH17ES 7-2 Others Page 8 Block Diagram Page Page Page GH17LS/GH17ES 10-1 10 Schematic Diagrams SELFRAST_D_SUB H*V_SYNC MCAD(1) MCAD(0) Page 10 Schematic Diagrams GH17LS/GH17ES 10-3 MCA(9) MCA(8) 10-2 Main Part Schematic Diagram 2.5VJA1 2.5VJP 2.5VJF +2.5V Page 11 Panel Description