Giáo trình sửa chữa màn hình LCD - Chương1

Giáo trình sửa chữa màn hình LCD - Chương1

LCD Monitor Service Guide

for

L2 (Module) Repair

Model: MB17SE

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

Release Version List

Index

I MB17SE LCD Monitor Overview 1

II Product Specification 2

III MMI 3

Front side 3

Back side 5

IV Menu & Operating Mode 6

V Disassembly & Assembly 7

1 Precaution 7

2 Suggest Tools 8

3 Disassembly Procedure 9

3.1 Stand Subsystem 10

3.2 Board Subsystem 11

3.3 Panel Subsystem 20

3.4 Bezel Subsystem 22

4 Assemble Procedure 23

4.1 Bezel Subsystem 24

4.2 Panel Subsystem 25

4.3 Board Subsystem 27

4.4 Stand Subsystem 35

VI HW Block Diagram 36

I MB17SE LCD Monitor Overview

Main product features include

z 17“ LCD Monitor

z Recommended Resolution: 1280*1024

z MB17SE:5 ms (Tr+Tf) Quick response time

z SPLENDID™ Video Enhancement Technology by hotkey

z 3 Skin-tones selection

z Built-in Stereo Powerful Speakers

z 5 Video Preset Mode Selections via a Hotkey

z VESA Display Data Channel DDC2B compliance

z VESA wall mount compliance

II Product Specification

Splendid (Video Intelligence) Yes

Inputs

Audio Line-in 3.5mm mini jack

Headphone port 3.5mm mini jack

Security Kensington lock Yes

Power Supply AC: 100~240V

TC003,Energy Star 2006, UL/cUL,

CB, CE, FCC, CCC, BSMI, Gost-R, C-Tick, \PSB, MIC, WHQL

z Exit the OSD menu or go back to the previous menu as the OSD menu

is active

z Automatically adjust the image to its optimized position, clock, and phase by touching the sensor for 2-4 seconds

3 “–” Button:

z Press this button to decrease the value of the function selected or move

to the previous function

z This is also a hotkey for Volume adjustment

6 Sensor

z Press this sensor to turn the monitor on/off

z The table below shows the status of the LED indicator beside this button

LED Status Description

Back side

1 AC-in Port This port connects the power connector by the bundled power

cord

2 VGA port This 15-pin port is for PC VGA connection

3 Audio-in port This port connects PC audio source by the bundle audio

cable

IV Menu & Operating Mode

(1) Color Temp (2) Skin Tone (3) RGB

Input Select System Setup

(2) Image Setup (3) input select (MB19TU only)(4) Information

(5) Language (6) Reset

Supported Operating Mode

Standard Resolution Horizontal

Frequency

Vertical Frequency

Pixel Frequency

640×480 31.47KHz 60Hz 25.18MHz 640×480 37.90KHz 72Hz 31.50MHz

VGA

640×480 37.50KHz 75Hz 31.50MHz 800×600 35.16KHz 56Hz 36.00MHz 800×600 37.90KHz 60Hz 40.00MHz 800×600 48.10KHz 72Hz 50.00MHz

Modes not listed in the table may not be supported For optimal resolution,

we recommend that you choose a mode listed in the table above

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

3.1 Stand Subsystem

1 Unlock four clips to dismount BASE

4 Remove 3 screws on BACK COVER

5 Lift BACK COVER from under part to dismount

3 Unplug SPEAKER CABLES and KEY BOARD CABLE, and then take away KEY BOARD

6 Disconnect POWER BOARD CABLE

3 Remove 1 TAPE here

4 Open LVDS CABLE COVER and then disconnect LVDS CABLE

5 Use space screwdriver to remove 2 screws on D-SUB PORT

6 Release 5 screws on MAIN BOARD

2 Pull down to remove POWER BOARD SHIELDING

5 Remove 2 screws on AC-IN PORT

6 Take out POWER BOARD

4 Remove 1 TAPE on LVDS CABLE

5 Unplug LVDS CABLE

The assembly procedure consists of the following steps:

4.1 Bezel Subsystem

1 Install SPEAKERS on BEZEL, and Tighten 8 screws on them

2 Assemble KEY PAD on BEZEL

4.2 Panel Subsystem

1 Plug LVDS CABLE

2 Paste 1 piece of TAPE on LVDS CABLE

3 Assemble PANEL FRAME with LCD PANEL, and then tighten 4 screws on both sides

4 Locate LCD in BEZEL and press down to fix it

5 Secure 4 screws on PANEL FRAME

4 Plug 4 LAMP CABLES

5 Push up to mount POWER BOARD SHIELDING

4 Plug LVDS CABLE, and then cover LVDS CABLE COVER

4 Plug SPEAKER CABLES and KEY BOARD CABLE with KEY BOARD

5 Assemble KEY BOARD on BEZEL, and secure 6 screws on it

4 Install STAND over HINGE

5 Tighten 4 screws on STAND

4.4 Stand Subsystem

1 Mount BASE with STAND

VI HW Block Diagram

MB17SE