Samsung LHA20WS Manual de usuario

SERVICEManual

LCD Monitor Fashion Feature

LCD-Monitor

Chassis LHA20WS

Model 205BW

- Premium HAS application(Lift 80mm)

- Magic Rotation application

(Auto pivot Delete)

- Embeded Power, Mechanical S/W

application

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.

LHA20WS Service Manual

First edition March 2006.

Printed in Korea.

Trademarks

Samsung is the registered trademark of Samsung

Electronics Co., Ltd.

LHA20WS 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 Electrostatically Sensitive Devices (ESD) Precautions ……………………………………………………………………………… 1-2

1-4 Installation Precautions ………………………………………………………………………………………………………………… 1-3

2. Product specifications …………………………………………………………………………………………………………………………22-1

2-1 Fashion Feature…………………………………………………………………………………………………………………………… 2-1

2-2 Specifications ……………………………………………………………………………………………………………………………… 2-1

2-3 LS20BRD feature ………………………………………………………………………………………………………………………… 2-2

2-4 Spec Comparison ………………………………………………………………………………………………………………………… 2-3

2-5 Option Specification ……………………………………………………………………………………………………………………… 2-4

3. Alignments and Adjustments …………………………………………………………………………………………………………………33-1

3-1 Required Equipment …………………………………………………………………………………………………………………… 3-1

3-2 Automatic Color Adjustment …………………………………………………………………………………………………………… 3-1

3-3 DDC EDID Data Input …………………………………………………………………………………………………………………… 3-1

3-4 Service Function Spec. ………………………………………………………………………………………………………………… 3-2

3-5 Hidden Key list …………………………………………………………………………………………………………………………… 3-3

3-6 EDID Installation with Windows Program ………………………………………………………………………………………………3-4

3-7 Execution Items after replacing the main board ………………………………………………………………………………………3-4

4. Troubleshooting …………………………………………………………………………………………………………………………………44-1

4-1 No Power ……………………………………………………………………………………………………………………………………4-1

4-2 No Video (PC Analog Signal) …………………………………………………………………………………………………………… 4-3

4-3 No Video (PC Digital Signal) …………………………………………………………………………………………………………… 4-5

5. Exploded View and Parts List ………………………………………………………………………………………………………………55-1

5-1 LHA20WS Exploded View ……………………………………………………………………………………………………………… 5-1

5-2 LHA20WS Parts List ……………………………………………………………………………………………………………………… 5-2

6. Electrical Parts List ……………………………………………………………………………………………………………………………66-1

6-1 LHA20WS Parts List ……………………………………………………………………………………………………………………… 6-1

7. Block Diagram …………………………………………………………………………………………………………………………………77-1

Contents

88. Wiring Diagram …………………………………………………………………………………………………………………………………88-1

9. SSchematic Diagrams ……………………………………………………………………………………………………………………………99-1

9-1 Schematic Diagrams ……………………………………………………………………………………………………………………… 9-1

9-2 Schematic Diagrams ………………………………………………………………………………………………………………………9-3

10. Operating Instructions and Installation ………………………………………………………………………………………………………10-1

10-1 Front …………………………………………………………………………………………………………………………………… 10-1

10-2 Rear ………………………………………………………………………………………………………………………………………10-2

10-3 Using the Stand …………………………………………………………………………………………………………………………10-4

11. Disassembly and Reassembly ………………………………………………………………………………………………………………111-1

11-1 Disassembly …………………………………………………………………………………………………………………………… 11-1

11-2 Reassembly …………………………………………………………………………………………………………………………… 11-3

12. PCB Diagram …………………………………………………………………………………………………………………………………112-1

13. CCircuit Descriptions ……………………………………………………………………………………………………………………………113-1

13-1 Block description ……………………………………………………………………………………………………………………… 13-1

13-2 Block operating ……………………………………………………………………………………………………………………… 13-2

14. Reference Infomation ……………………………………………………………………………………………………………………… 114-1

14-1 Technical Terms ……………………………………………………………………………………………………………………… 14-1

14-2 Pin Assignments…………………………………………………………………………………………………………………………14-4

14-3 Timing Chart ……………………………………………………………………………………………………………………………14-5

14-4 Preset Timing Modes ………………………………………………………………………………………………………………… 14-6

14-5 Panel Description ……………………………………………………………………………………………………………………… 14-7

Contents

Samsung Electronics Co.,Ltd.

416, Maetan-3Dong, Yeongtong-Gu, Suwon City,

Gyeonggi-Do, Korea, 443-742

Printed in Korea

P/N : BN82-00136G-00

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. Menu button

Opens the OSD menu. Also use to exit the OSD

menu or return to the previous menu.

2. MagicBright button

MagicBright is a new feature providing optimum

viewing environment depending on the contents of

the image you are watching. Currently six different

modes are available: Custom, Text, Internet,

Game, Sport and Movie. Each mode has its own

pre-configured brightness value. You can easily

select one of six settings by simply pressing

MagicBright control buttons.

1) Custom

Although the values are carefully chosen by our

engineers, the pre-configured values may not be

comfortable to your eyes depending on your taste.

If this is the case, adjust the brightness and con-

trast by using the OSD menu.

2) Text : Normal brightness

For documentations or works involving heavy text.

3) Internet : Medium brightness

For working with a mixture of images such as text

and graphics.

4) Game

For watching motion pictures such as a game.

5) Sport

For watching motion pictures such as a sport.

6) Movie : High brightness

For watching motion pictures such as a DVD or

Video CD.

3. Bright button

When OSD is not on the screen, push the button

to adjust brightness.

2,3. Adjust buttons

Adjust items in the menu.

10 Operating Instructions and Installation

10-2

1. POWER S/W : Switch the monitor on and off.

2. POWER IN : Power cord, plugs into monitor and wall

receptacle.

10-2 Rear

4. Enter button / Source button

Activates a highlighted menu item. /

Push the 'SOURCE', then selects the video signal

while the OSD is off. (When the source button is

pressed to change the input mode, a message

appears in the left upper side of the screen

displaying the current mode -- analog or digital

input signal.)

Note : If you select the digital mode, you must con-

nect your monitor to the graphic card's port using

the DVI cable.

5. Auto button

When the 'AUTO' button is pressed, the Auto

Adjustment screen appears as shown in the ani-

mated screen on the center. Auto adjustment

allows the monitor to self-adjust to the incoming

video signal. The values of fine, coarse and posi-

tion are adjusted automatically. (Available in ana-

log mode only)

6. Power button

Use this button for turn the monitor on and off.

(The configuration at the back of the monitor may vary from product to product.)

10 Operating Instructions and Installation

10-3

RGB IN port : Connect the signal cable to the RGB IN

port on the back of your monitor.

(SOURCE : analog)

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.)

Stand Stopper : Remve the fixing pin on the stand to lift

the monitor up and down.

DVI IN port : Connect the DVI Cable to the DVI IN port

on the back of your monitor.

(SOURCE : digital)

10 Operating Instructions and Installation

10-4

10-3 Using the Stand

10-3-1 Removing the base

1. Turn off your monitor and unplug its power cord.

2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen.

3. Remove four screws(A) and then remove the Stand from the LCD monitor.

10 Operating Instructions and Installation

10-5

A. Monitor

B. Mounting interface pad

1. Turn off your monitor and unplug its power cord.

2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen.

3. Remove four screws and then remove the stand from the LCD monitor.

4. Align the mounting interface Pad with the holes in the rear cover mounting pad and secure it with four

screws that came with the arm-type base, wall mount hanger or other base.

10-3-2 Attaching a Base

- This monitor accepts a 100mm x 100mm VESA-compliant mounting interface pad.

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