Samsung SyncMaster 400TXn User manual

SERVICEManual
TFT-LCD Monitor Feature
LCD-Monitor
Chassis Model
LBH40TS 400Txn
400Pxn
LBH40PS 400PX
▶ VMB (Vertical Marketing Business) Model
▶ MFM ( (Multi Function Monitor):
Compatible with various sources including
PC (DVI, AV, RF, S-video, Component)
▶ Adopting Response Time 8ms SPVA
▶ SRS Trusurround supplied
▶ RS232 Remote Control
(MDC software supplied)
▶ Video Input : PC(D_SUB,DVI), BNC, DVI,
Component, AV, S-Video, RF
▶ Audio Input : PC(D_SUB,DVI) Stereo, Video
(AV, S-Video) , Component, BNC
▶ Video & Audio Output : PC, BNC, AV, S-
Video, Component Output, Speaker Output
▶ 10W x 2 External Speaker
▶ PIP On timer function : The PIP automatically
pops up after the time setting
▶ PIP, OSD Menu Transparency Adjustment
▶ Off timer function
▶ Wall & Ceiling Mounting
(Optional VESA Wall Mount Kit)
▶ Supporting Network function

ii
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.
LBH40TS Service Manual
First edition February 2006.
Printed in Korea.
Trademarks
Samsung is the registered trademark of Samsung
Electronics Co., Ltd.
LBH40TS and Macmaster Cable Adapter are
trademarks of Samsung Electronics Co., Ltd.
Macintosh and Power Macintosh are trademarks of
Apple Computer, Inc.
All other trademarks are the property of their respective
owners.

Contents
1. Precautions ……………………………………………………………………………………………………………………………………1-1
1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1
1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2
1-3 Electrostatically Sensitive Devices (ESD) Precautions ……………………………………………………………………………… 1-2
2. Product specifications ………………………………………………………………………………………………………………………2-1
2-1 Fashion Feature…………………………………………………………………………………………………………………………… 2-1
2-2 Specifications ……………………………………………………………………………………………………………………………… 2-2
2-3 Accessories ……………………………………………………………………………………………………………………………… 2-3
2-4 Accessories(Sold Separately) …………………………………………………………………………………………………………… 2-5
3. Operating Installations and Installation……………………………………………………………………………………………………3-1
3-1 Front ……………………………………………………………………………………………………………………………………… 3-1
3-2 Installing Stand Kit………………………………………………………………………………………………………………………… 3-9
4. Alignment and Adjustments …………………………………………………………………………………………………………………4-1
4-1 Service Mode ……………………………………………………………………………………………………………………………… 4-1
4-2 Initialization of Ned ……………………………………………………………………………………………………………………… 4-1
4-3 When you want to initiate the network board ………………………………………………………………………………………… 4-1
4-4 Service Mode Menu ……………………………………………………………………………………………………………………… 4-2
4-5 Service Calibration (Fault Recovery In Terms Of Software) ……………………………………………………………………… 4-11
4-6 How to execute D DC …………………………………………………………………………………………………………………… 4-11
4-7 Program Upgrading - MAIN …………………………………………………………………………………………………………… 4-13
4-8 What To Do after Board Replacement………………………………………………………………………………………………… 4-19
5. Exploded View and Parts List…………………………………………………………………………………………………………………7-1
5-1 Exploded View …………………………………………………………………………………………………………………………… 7-1
5-2 Parts List ………………………………………………………………………………………………………………………………… 7-2
6. Electrical Parts List ……………………………………………………………………………………………………………………………8-1
6-1 Main PCB Parts …………………………………………………………………………………………………………………………… 8-1
6-2 Others………………………………………………………………………………………………………………………………………8-47
5. Disassembly and Reassembly ………………………………………………………………………………………………………………5-1
5-1 Disassembly ……………………………………………………………………………………………………………………………… 5-1
5-2 Reassembly ……………………………………………………………………………………………………………………………… 5-4
6. Troubleshooting…………………………………………………………………………………………………………………………………6-1
6-1 No Power ………………………………………………………………………………………………………………………………… 6-1
6-2 Check According to New Features (MagicNet) ……………………………………………………………………………………… 6-20
6-3 Diagnosis According To Error Mode ………………………………………………………………………………………………… 6-21

Contents
7. Block Diagram……………………………………………………………………………………………………………………………………9-1
7-1 Monitor Block ………………………………………………………………………………………………………………………………9-1
7-2 Network Block …………………………………………………………………………………………………………………………… 9-2
7-3 Main - Power Block ……………………………………………………………………………………………………………………… 9-3
7-4 Network - Power Block …………………………………………………………………………………………………………………… 9-4
8. Wiring Diagram…………………………………………………………………………………………………………………………………10-1
8-1 Main Board Wiring Diagram ……………………………………………………………………………………………………………10-1
8-2 Network Board Wiring Diagram………………………………………………………………………………………………………… 10-2
9. Schematic Diagram ……………………………………………………………………………………………………………………………12-1
10. Operating Installations and Installation …………………………………………………………………………………………………3-1
10-1 Front ……………………………………………………………………………………………………………………………………… 3-1
10-2 Installing Stand Kit ……………………………………………………………………………………………………………………… 3-9
11. Disassembly and Reassembly ……………………………………………………………………………………………………………5-1
11-1 Disassembly……………………………………………………………………………………………………………………………… 5-1
11-2 Reassembly ……………………………………………………………………………………………………………………………… 5-4
12. PCB Diagrams ………………………………………………………………………………………………………………………………11-1
12-1 Main PCB layout ……………………………………………………………………………………………………………………… 11-1
12-2 Network PCB layout …………………………………………………………………………………………………………………… 11-3
13 Circuit Descriptions …………………………………………………………………………………………………………………………13-1
13-1 Main board part ……………………………………………………………………………………………………………………… 13-1
13-2 Network board part …………………………………………………………………………………………………………………… 13-4
14 Reference Infomation ………………………………………………………………………………………………………………………14-1
14-1 Set UP…………………………………………………………………………………………………………………………………… 14-1
14-2 Terms …………………………………………………………………………………………………………………………………… 14-7
14-3 Timing Chart …………………………………………………………………………………………………………………………… 14-9
14-4 Preset Timing Modes ………………………………………………………………………………………………………………… 14-14
14-5 Panel Description …………………………………………………………………………………………………………………… 14-15

Samsung Electronics Co.,Ltd.
416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Gyeonggi-Do,
Korea, 443-742
Printed in Korea
P/N : BN82-00135E-01
URL : http://itself.sec.samsung.co.kr/
-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.

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