Samsung LDO19WS User manual

SERVICEManual
LCD Monitor Fashion Feature
LCD-Monitor
Chassis LDO19WS
LDO19CS
Model 940MW
940MG
- MFM Model
- VCT49xy
- W/W model
- High Contrast Ratio(700:1)
- High Luminance(300cd/m2)

ii
Copyright
©2005 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.
LDO19WS Service Manual
First edition September 2005.
Printed in Korea.
Trademarks
Samsung is the registered trademark of Samsung
Electronics Co., Ltd.
LDO19WS 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.

11. Precautions………………………………………………………………………………………………………………………………………11-1
1-1. Safety Precautions ………………………………………………………………………………………………………………………1-1
1-2. Servicing Precautions ……………………………………………………………………………………………………………………1-2
1-3. Static Electricity Precautions ……………………………………………………………………………………………………………1-2
1-4. Install Precautions …………………………………………………………………………………………………………………………1-3
2
2. Product specifications …………………………………………………………………………………………………………………………22-1
2-1. Fashion Feature ………………………………………………………………………………………………………………………… 2-1
2-2. Specifications Comparison to the Old Model …………………………………………………………………………………………2-1
2-3. Specifications ………………………………………………………………………………………………………………………………2-2
2-4. Option Specification ………………………………………………………………………………………………………………………2-3
3
3. Alignments and Adjustments …………………………………………………………………………………………………………………33-1
3-1. Program Upgrade …………………………………………………………………………………………………………………………3-1
3-2. DDC JIG Installation ……………………………………………………………………………………………………………………3-2
3-3. EDID Installation with Windows Program ………………………………………………………………………………………………3-3
3-4. Factory Mode Adjustments ………………………………………………………………………………………………………………3-4
4
4. Troubleshooting ………………………………………………………………………………………………………………………………44-1
4-1. No Power ………………………………………………………………………………………………………………………………… 4-1
4-2. No Picture (PC Signal) ………………………………………………………………………………………………………………… 4-2
4-3. No Picture (TV) …………………………………………………………………………………………………………………………… 4-4
4-4. No Picture (Video/S-Video/Scart) ……………………………………………………………………………………………………… 4-6
4-5. No Picture (Component) ………………………………………………………………………………………………………………… 4-8
4-6. No Sound (TV) ………………………………………………………………………………………………………………………… 4-10
4-7. No Sound (Component) ……………………………………………………………………………………………………………… 4-12
5
5. Exploded View and Parts List …………………………………………………………………………………………………………………55-1
6. EElectrical Parts List ……………………………………………………………………………………………………………………………66-1
7. BBlock Diagram …………………………………………………………………………………………………………………………………77-1
8. WWiring Diagram …………………………………………………………………………………………………………………………………88-1
9. SSchematic Diagrams ……………………………………………………………………………………………………………………………99-1
Contents

110. Operating Instructions and Installation ……………………………………………………………………………………………………110-1
10-1. Front …………………………………………………………………………………………………………………………………… 10-1
10-2. Rear …………………………………………………………………………………………………………………………………… 10-2
10-3. Remote Control ……………………………………………………………………………………………………………………… 10-5
1
11. Disassembly and Reassembly ………………………………………………………………………………………………………………111-1
11-1. Disassembly …………………………………………………………………………………………………………………………… 11-1
11-3. Reassembly …………………………………………………………………………………………………………………………… 11-3
1
12. PCB Diagram …………………………………………………………………………………………………………………………………112-1
13. CCircuit Descriptions ……………………………………………………………………………………………………………………………113-1
13-1. Block description ……………………………………………………………………………………………………………………… 13-1
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14. Reference Infomation …………………………………………………………………………………………………………………………114-1
14-1. Technical Terms ……………………………………………………………………………………………………………………… 14-1
14-2. Connecting Your Monitor …………………………………………………………………………………………………………… 14-4
14-3. Connecting to Others devices ……………………………………………………………………………………………………… 14-5
14-4. Pin Assignment ……………………………………………………………………………………………………………………… 14-8
14-5. Timing Chart …………………………………………………………………………………………………………………………… 14-9
14-6. Preset Timing Modes ……………………………………………………………………………………………………………… 14-10
14-7. Panel Description …………………………………………………………………………………………………………………… 14-11
Contents

Samsung Electronics Co.,Ltd.
416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
Gyeonggi-Do, Korea, 443-742
Printed in Korea
P/N : BN82-00125C-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.

10 Operating Instructions and Installation
10-1
10 Operating Instructions and Installation
10-1 Front
1. SOURCE
Switches from PC Mode to Video mode.
Changing the source is allowed only in external
devices that are connected to the monitor at the
time.
To switch Screen modes:
[PC] - [DVI] - [TV] - [Ext.] - [AV] - [S-Video] -
[Component]
2. PIP ( Available in PC/DVI/Component Mode )
In PC Mode, turns on Video or TV screens in PIP
mode.
3. MENU
Use this button for open the on-screen menu and
exits from the menu screen or closes screen
adjustment menu.
4. CH
Moves from one menu item to another vertically or
adjusts selected menu values.
In TV mode, selects TV channels.
5. VOL
Moves from one menu item to another horizontally
or adjusts selected menu values.
Adjusts the audio volume.
6. [ ] Enter button
Activates a highlighted menu item.
7. [ ] Power button
Use this button to turn the monitor on and off.
8. Power indicator
Power Indicator shows PowerSaver mode by
green blinking.
9. Remote Control Sensor
Aim the remote control towards this spot on the
monitor.
10. Speaker
You can hear sound by connecting the soundcard
of your PC to the monitor.

10 Operating Instructions and Installation
10-2
10-2 Rear
1. POWER
Power terminal
Connect the power cord for your monitor to the
POWER on the back of the monitor.
This product may be used with 100 ~ 240VAC
(+/- 10%).
2.DVI/PC IN
1) DVI(HDCP)
: Connect the DVI cable to the DVI(HDCP) port
on the back of your monitor.
2) RGB
: Connect the signal cable to the RGB port on
the back of your monitor.
3) AUDIO
: PC sound terminal (input)

10 Operating Instructions and Installation
10-3
3. EXT(RGB)
External device terminal
EXT(RGB) is mainly used in Europe.
As for EXT(RGB) port of the monitor, it makes TV
or Video signal input and output.
4. COMPONENT IN
1) R - AUDIO - L
: DVD/DTV sound input terminal (left/right)
2) PR, PB,Y
: DVD/DTV video input terminal(PR, PB,Y)
5. ANT IN
TV antenna terminal

10 Operating Instructions and Installation
10-4
7. Kensington Lock
The Kensington lock is a device used to physically
fix the system when using it in a public place.
(The locking device has to be purchased separately.)
For using a locking device, contact where you
purchase it.
6. AV connection terminal
1) : Headphone sound output terminal
2) S-VIDEO
: External device (S-video) input terminal
3) VIDEO
: External device (video) input terminal
4) R - AUDIO - L
: External device sound input terminal

10 Operating Instructions and Installation
10-5
10-3 Remote Control
1. POWER
2. Number button
3. +100, -/--
4. - +
5. MUTE
6. TTX/MIX
7. MENU
8. ENTER
9. CH/P
10. SOURCE
11. INFO
12. EXIT
13. Up-Down Left-Right buttons
14. AUTO
15. P.MODE, M/B (MagicBright¢â)
16. P.SIZE
17. STILL
18. PIP
19. S.MODE
20. DUAL/MTS
21. PRE-CH
22. SOURCE
23. SIZE
24. POSITION
25. MAGIC-CH