Giáo trình sửa chữa màn hình LCD - Chương11

LCD Monitor Service Guide
for
L2 (Module) Repair


Model: PM17TU/TE/TA


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.

PM17TU/TE/TA 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 Bezel Subsystem....................................................................................11

3.3 Board & Panel Subsystem .....................................................................15

4.

Assemble Procedure.....................................................................................26

4.1 Board Subsystem ...................................................................................27

4.2 Bezel Subsystem....................................................................................36

4.3 Stand Subsystem....................................................................................39

VI.HW Block Diagram ....................................................................................41

I. PM17TU/TE/TA LCD Monitor Overview

z 17” Glare Panel(Color Shine)
z High brightness 500nits(Crystal Shine) and 600:1
z 0 bright dot(ZBD) Panel
z Trace Free Technology

z 4ms(gray to gray) Response Time (PM17TU only)
z Splendid
TM
Video Enhancement Technology
z 5 Video Preset Mode by hot key
z Earphone output
z Outstanding audio (2.5W x 2)
z DVI-D and D-Sub signal Input (with DVI cable)
z Cable management
z Ergonomically superior design


(PM17TU/TE) (PM17TA)














2
II. Product Specification

Technical Specification PM17TU PM17TE PM17TA
Panel Size
17" TFT
Anti-Reflection Glare
Yes Yes No
Response Time
3ms (GTG) 8ms(Tr+Tf) 8ms(Tr+Tf)
Luminance of White
500cd/m2 500cd/m2 400cd/m2
rast Ratio (Max.)
600:1
Viewing Angle (H/V)
140°/ 130°
Max. Resolution
SXGA 1280X1024
Pixel Pitch
0.264mm
ZBD
Yes
Panel
Display Color
16.2M
Spendid (Video Intelligence)
Yes
Digital
24-pin DVI-D
Analog
15-pin D-Sub
Inputs
PC Audio Line IN

3.5mm mini jack
Outputs
Speaker
2.5WX2
Security Kensington lock
Yes
VESA Wall Mount
75X79mm
Base Operation Tilt
-5/+20 degree
ME
Color
Shining Black Shining Black Silver
Power Supply
AC: 100~240V
Power on mode
<48W
Power
Standy by mode
<2W
Net
4.5kg 4.2kg 4.2kg
Weight
Gross
6.1kg 5.8kg 5.8kg
Net
390X416X176mm
Dimension
Packing
451X480X150mm

Accessory
DVI cable, D-sub cable, Audio cable, Power
cord, User Guide
Regulation Approval
ISO 13406-2,
Energy Star,
UL, cUL, CB,
CE, FCC,
CCC, BSMI,
Gost-R,
C-Tick, MIC
TCO99, ISO
13406-2, Enery
Star, UL, cUL,
TUV-GS, CB,
CE, FCC,
CCC, BSMI,
Gost-R,
C-Tick, MIC
TCO99, ISO
13406-2,
Energy Star,
UL, cUL,
TUV-GS, CB,
CE, FCC,
CCC, BSMI,
Gost-R,
C-Tick, MIC

3
III. MMI
Front side








4
Back side





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

(1) Color Temp.

(2)Skin Tone
(3) RGB user mode
(4) Cool Temp
(5) Normal Temp
(6) Warm Temp
(1) Contrast
(2) Brightness

OSD Adjustment Image Setup Input Selection
(1) H-Position
(2) V-Position
(3) OSD Timeout
(1) Focus
(2) Image Position
(3) Auto select

(1) Analog
(2) Digital

Preset Modes Timing Chart




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 PM17TU/TE/TA 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 Bezel subsystem
3.3 Board Panel subsystem

9
3.1 Stand Subsystem

1. Hold the handle, and then unplug screw by counterclockwise
circumrotating, then remove BASE.





2. Pull down WIRE CLIP to dismount


3. Open 6 latches on the left and right side of STAND REAR COVER, and



10
then take away it




4. Remove 1 screw, and take away STAND FEONT COVER.

11
3.2 Bezel Subsystem

Bezel
1. Release 2 screws on the BACK COVER.









12
2. Disassemble begin from under-part of BEZEL, use hand pull and open
outward for bottom, left and right side, and then top of BEZEL.

13
3. Remove 2 screws on KEY POWER BOARD.




4. Unplug KEY POWER BOARD cable.






14
5. Release 4 screws on left and right speakers

15
3.3 Board & Panel Subsystem

LCD Panel
1. Remove 6 screws on LCD Panel.




2. Slightly Lift the LCD panel from bottom of LCD PANEL, about 30 degrees.