Giáo trình sửa chữa màn hình LCD - Chương7

LCD Monitor Service Guide
for
L2 (Module) Repair



Models: PW201


V1.0








RESTRICTIONS ON USE OF MATERIALS
This manual is only for ASUS authorized service centers to repair ASUS
LCD product. The documents are provided as is and no copy, reproduction
or transfer shall be made without first acquiring prior written approval from
ASUSTEK. All rights reserved.

2
Release Version List
Version Issue Date Remarks
V1.0 2006.09.06 First Release



Index
I.

PW201 LCD Monitor Overview..................................................................4

II.

Product Specification .................................................................................5

III.

MMI .....................................................................................................7

1.

Front side ............................................................................................7

2.

Back side.............................................................................................8

3.

Side view.............................................................................................9

IV.

Menu & Operating Mode ...................................................................10

V.

Disassembly & Assembly......................................................................... 11

1.

Precaution .........................................................................................11

2.

Suggest Tools....................................................................................12

3.

Disassembly Procedure.....................................................................13

3.1 Stand Subsystem.......................................................................14

3.2 Board Subsystem ......................................................................20

3.3 Panel Subsystem.......................................................................34

4.

Assemble Procedure.........................................................................37

4.1 Panel Subsystem.......................................................................38

4.2 Board Subsystem ......................................................................40

4.3 Stand Subsystem.......................................................................55

VI.

HW Block Diagram............................................................................61



I. PW201 LCD Monitor Overview
PW201 is the first 20” wide screen LCD monitor with anti-reflection glare panel
providing more vivid color to entertain your eyes. Main product features include
z 20” Wide Screen 1680 *1050 (16:10)
z Recommended resolution: 1680X1050
z Anti-reflection glare type panel
z 8ms(grey to grey) quick response time
z 3 USB 2.0 ports
z VGA/DVI/Video/S-Video/component inputs
z SPLENDID Video Intelligence Technology
z 5 Video Preset Modes switched by hotkey
z 3 skin-tons selection
z Flexible display orientation including portrait/landscape
z Tilt/eight Adjustment
z Swivel/90°rotation
z Kensington security lock

z 3WX2 Stereo speakers and earphone output
z Microsoft Windows 2000/XP compliance
z Built-in 3M-pixel Web Camera
z VESA Display Data Channel DDC2B compliance
z VESA wall mount compliance (100 X 100 mm)
z EPA ENERGY STAR and ergonomic design
z Touch sensor buttons
z RoHS compliance




5
II. Product Specification
Technical Specification
Panel Size
20" Wide (16:10)
Anti-Reflection Glare
Yes
Resoponse Time
8ms
Brightness (Max.)
300cd/m2
Contrast Ratio (Max.)
800:1
Viewing Angle (H/V)
176°/176°
Max. Resolution
WSCGA+1680X1050
Pixel Pitch

0.258mm
Display Color
16.7M
Panel
ZBD
Yes
Splendid (Video Intelligence)
Yes
Digital
24-Pin DVI-D
Analog
15-Pin D-Sub
PC Audio Line-in
3.5mm Mini-jack
USB 2.0
upstranmX1, DownstreamX3
Video
Yes
S-Video
Yes
Component input
Yes
1.3 mega-pixel Webcam
Yes ( USB 2.0 interface)
Inputs
Audio
L/R X1 (1.5 Vp-p)
Speaker
3Wx 2 Stereo
Output

Headphone

3.5 mm Mini-jack
Tile
+90~-5
Height Adjustment
Yes(double hinge)
Pivot
Yes (0/90)
Swivel
+60~-60
Wall Mounting (VESA)
Yes(100mm)
ME
Color
Shining Black +Silver
Security Kensington lock

Yes
Power Source
AC: 100~240V 50Hz/60Hz
Power on mode
<80W
Power
Standby mode
<2W
Net (WxHxD)
560x496x280 mm
Dimension
Packing (WxHxD)

650x454x206 mm
Net
9.7kg
Weight
Gross
12.8kg
Accessory
Quick Start Guide, support CD,
Power Cord, Power adapter,
VGA-Audio-USB 3-in-1 cable, DVI
cable, RCA cable

6
Regulation Approval
Energy Star, UL/cUL, CB, CE, FCC,
CCC, BSMI, Gost-R, C-Tick, VCCI,
RoHS, MIC


III. MMI
1. Front side




8
2. Back side


9

3. Side view


IV. Menu & Operating Mode
Menu
Splendid Image Color
(1) Scenery Mode
(2) Standard Mode
(3) Theater Mode
(4) Game Mode
(5) Night View Mode

(1) Brightness
(2) Contrast
(3) Sharpness
(4) Saturation
(5) Position (For VGA only)
(6) Focus (For VGA only)

(1) Color Temp.
(2)Skin Tone

Input Select System Setup

(1) VGA
(2) DVI
(3) Video
(4) S-Video
(5) Component
(1) Volume

(2) Aspect Controls
(3) OSD Setup
(4) Language
(5) Information
(6) Reset


Supported Operating Mode



11
V. Disassembly & Assembly
1. Precaution
Please read the precautions as follows to prevent any damages to the LCD
monitor and also select the appropriate tools for disassembly and re-assembly.

 Make sure all power connection is removed. Be sure that the LCD monitor
is in power off status.

 Prepare soft cloth and sponge as working platform to place LCD monitor
horizontally.

 Hold LCD by the side carefully and DON’T touch or press panel directly.

 Remove all rings, watches and any other metal objects from your hands
which possible to cause scratch.


 Always wear a ground strap or anti-static glove to protect the parts from

static discharge. ESD (electro-static discharge) protection is required to
guarantee the safety of product and personnel.



12
2. Suggest Tools
Here are some tools that can be used for the LCD monitor’s service and repair.

Philips-head Screwdriver
Use a Philips-head screwdriver to fasten/remove the K- or B-typed screws

P/N：N/A

Gloves
To protect LCD Panel and your hand

P/N: (L) 16-003300131 (M) 16-003300130

C/D Disassembly Tool
Use C/D Disassembly Tool to open cosmetic cover and avoid scratch.

P/N: 13GV0400PZZZZ

Spacer Screwdriver
Use a spacer screwdriver to fasten/remove spacer screws or hex screws.
P/N: N/A

13
3. Disassembly Procedure
Information in this section is to perform the disassembly procedure of the LCD
monitor. Depending on the failures, replace the defective parts accordingly.

Asus PW201 LCD Monitor consists of various subsystems. This section
describes the procedures for LCD monitor disassembly. In addition, the
detailed disassembly procedures of individual subsystem will be provided for
your service needs.

The disassembly procedure consists of the following steps:

3.1 Stand Subsystem
3.2 Board subsystem
3.3 Panel subsystem

14
3.1 Stand Subsystem
1. Turn the VESA COVER counterclockwise to open it. Remove the VESA
cover from STAND.









15

2. Remove 4 screws on the BACK COVER, and then Stand Subsystem can
be separated from main unit.





3. Dismount NECK FRONT COVER.



1 3
2 4

16
4. Lift 8 latches of HINGE FRONT COVER to remove from HINGE, two on the
top, three on the left and the other three on the right side.




5. Remove 2 screws on the front of hinge head






17
6. Remove 4 screws, and remove NECK REAR COVER.

7. Remove 3 screws on the front side of HINGE.






18
8. Follow the steps. Press down the hinge first, then lift the bottom of HINGE
REAR COVER, and remove HINGE REAR COVER slightly.



9. Remove 1 screw in the bottom to dismount BASE SWIVAL.





1
3
2

19
10. Remove 8 screws on BASE COVER and BASE BRACKET can be

removed.









20
3.2 Board Subsystem
Back Cover
1. Release 2 screws on the BACK COVER.





2. Open 2 latches at bottom of BACK COVER .




21
3. Lift and remove BACK COVER.

Main Board Shielding
1. Remove 12 screws on MAIN BOARD SHIELDING.









22




2. Take away MIAN BOARD SHIELDING




23
Main Board
1. Remove all tapes


2. Disconnect key control cable from MAIN BOARD and KEY BOARD.

24
3. Disconnect INVERTER CABLE from MAIN and POER BOARD






25
4. Unplug USB CABLES





5. Pull out LVDS cable carefully.