Giáo trình sửa chữa màn hình LCD - Chương9

LCD Monitor Service Guide
for
L2 (Module) Repair


Model: MM17D Series/MM19DE


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 2006/7/25 First Release



3
Index

I.

MM17D Series/MM19DE LCD Monitor Overview .....................................1

II.

Product Specification ................................................................................2

III.

MMI...........................................................................................................3

Front side ...............................................................................................................3

Back side................................................................................................................4

IV.

Menu & Operating Mode...........................................................................5

V.

Disassembly & Assembly..........................................................................6

1.

Precaution ......................................................................................................6

2.

Suggest Tools.................................................................................................7

3.

Disassembly Procedure..................................................................................8

3.1 Stand Subsystem......................................................................................9

3.2

Board Subsystem.................................................................................10

3.3 LCD Subsystem.....................................................................................17

4.

Assemble Procedure.....................................................................................19

4.1 LCD Subsystem.....................................................................................20

4.2 Board Subsystem ...................................................................................22

4.3 Stand Subsystem....................................................................................29

VI.

HW Block Diagram .................................................................................30

I. MM17D Series/MM19DE LCD Monitor Overview

z 17’’/19’’ TFT Color LCD Monitor.
z Recommended Resolutions: SXGA 1280X1024 @ 60Hz
z 8ms (Tr+Tf) Quick Response Time
z SPLENDED
TM
Video Enhancement Technology
z 5 Video Preset Modes Switched by Hotkey
z 3 Skin-Tones Selection for Users’ Preference
z VESA Display Data Channel (DDC) 1/2B Compliance
z VESA Wall Mount Compliance (100X100)
z EPA ENERGY STAR and Ergonomic Design
z Cabel Binder and Compact Case Design for Space Saving.

2
II. Product Specification
Technical Specification MM17D Series MM19DE
Panel Size
17.0’’ 19.0’’
Brightness (Max.)
400cd/m
2

Contrast Ratio (Max.)
600:1 700:1
Viewing Angle (H/V)
150/130
Max. Resolution
SXGA 1280X1024@75Hz
Pixel Pitch
0.264mm 0.294mm
Display Color
16.2M
Panel
ZBD
Yes No
Spendid (Video Intelligence)
Yes

Inputs Analog
15-Pin D-Sub
Tilt
+20°~-5°
Wall Mounting (VESA)
Yes(100mm)
ME
Color
Silver + Gray Gray or Black
Security Kensington lock
Yes
Power Supply
AC: 100~240V
Power on mode
<40W <55W
Power
Standy by mode
<2W
Net (WxHxD)
380x390x180 mm
Dimension
Packing (WxHxD)
435x156x134 mm
Net
4.25kg
5.1kg
Weight
Gross
5.75kg
6.9kg

Accessory
D-SUB cable, Power
cord, Quick Start
Guide, User manual
CD
D-SUB cable, Audio
cable, Power cord,
Quick Start Guide, User
manual CD
Regulation Approval
TCO99, Energy Star, UL/CUL, TUV-GS, CB,
CE, FCC, CCC, BSMI, Gost-R, C-Tick, VCCI,
ISO13406-2 ClassII, MIC




3
III. MMI
Front side








4
Back side

1. AC Input Socket: This port connects the power connector form 120-240V
power
2. Cable Binder
3. VGA (D-SUB) Port: This 15-pin port is for PV VGA connection






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

(1) Brightness
(2) Contrast

(1) RGB
(2) Skin Tone
(3) Color Temp
Input Select System Setup

(1) <VGA/DVI> (1) OSD Setup
(2) Image Setup
(3) Language
(4) Information
(5) Reset


Supported Operating Mode
STANDARD
RESOLUTION
HORIZONTAL
FREQUENCY
VERTICAL
FREQUENCY
Dos-mode
640 × 350 31.47kHz 70Hz
Dos-mode
720 × 400 31.47kHz 70Hz
640 × 480 31.47kHz 60Hz
640 × 480 35.00kHz 66.6Hz
640 × 480 37.50kHz 75Hz
VGA
640 × 480 37.86kHz 72Hz
800 × 600 37.879kHz 60Hz
800 × 600 46.875kHz 75Hz
800 × 600 35.16kHz 56Hz
800 × 600 48.01kHz 72Hz
SVGA
832 × 624 49.725kHz 75Hz
1024 × 768 48.363kHz 60Hz

1024 × 768 56.476kHz 70Hz
XGA
1024 × 768 60.02kHz 75Hz
1280 × 1024 64.00kHz 60Hz
SXGA
1280 × 1024 80.00kHz 75Hz



6
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.

7
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

8
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 MM17D Series/MM19DE 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 LCD subsystem
3.3 Front Bezel subsystem
3.4 Board subsystem




9
3.1 Stand Subsystem

The Illustration Below shows how to remove the stand subsystem.

1. Unlock the clip and take out the base (A)


2. Remove 4 screws on the BACK COVER

3. Pull the (B)stand downward to separate from BACK COVER




B
A



10
3.2 Board Subsystem

The illustrations below show how to disassemble BOARD Subsystem

Back Cover
1. Release 5 screws.



2. Insert the sticker at bottom of BACK COVER to open the latches, then
dismount BACKCOVER. .