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A231H
Acer A231H User Manual
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Acer
Acer
–LCD-A231H
Service Manual
LCD
Monitor
Acer
A231H
2
Table of Contents
Service Manual
1
Table of Contents
2
Important Safety Notice
3
Safety Precautions
3
Product Safety Notice
3
Service Notes
3
General
4
Main Features
4
Product Specification
4
Accessories
5
Operation Specifications
5
Environmental Conditions
5
Safety, EMC, Ergonomics and Compatibility Requirements
6
Electrostatic Discharge Requirements
6
Reliability
6
Output Characteristics
7
Input Characteristics
7
Main Power Supply
7
Electrical and Optical Characteristics and Performance
7
Backlight Power Supply
8
Brightness Output
9
White Balance
9
Brightness Uniformity
10
Input / Output Signal Specifications
10
Audio in
10
HDMI in
10
D-Sub Connector Pin Assignment
11
DVI-D in
11
DVI-D Connector Pin Assignment
11
Signal SPEC
13
Timing Table
13
HDMI Timing
14
Audio Output
15
DDC Data
15
Hdmi Edid
16
DVI EDID Table
16
VGA EDID Table
16
Function Specifications
18
Panel General Specifications
18
Optical Characteristic of LCD Panel
19
Keypad Function
19
Control Buttons
19
Hot Key Operation
20
OSD Structure
21
OSD Translation
23
Main Menu (NO_EMEA)
23
Color Management OSD
24
Main Menu (EMEA)
24
Mechanical
26
Cabinet Material
26
Mechanical Specification
26
Base Mechanical Interface
26
Random Vibration
27
Units Package
27
Unit Packing Vibration
27
Unit Package Specification
27
Package Drop
28
Non Operation Thermal Shock
28
Drop Sequence and Orientation
28
Marking and Identification
28
Flat Panel Specification
29
Applications
31
Description
31
Features
31
General Description
31
Absolute Maximum Ratings
32
Mechanical Information
32
Temperature and Relative Humidity Range
33
Relative Humidity
33
Optical Characteristics
34
Environment Condition
35
Single Lamp Current
35
Test Equipment Setup
35
Definition of Viewing Angle
37
Color Grayscale Linearity
38
Test Method
38
Test Evaluation
38
Electrical Characteristics
39
TFT LCD Module
39
Dot Pattern
41
Black Pattern
41
White Pattern
41
Measurement Condition
41
Back Light Unit
42
Waveform of the Inverter
43
Block Diagram
44
Input Terminal Pin Assignment
45
Input Signal & Power
45
Connector Diagram
46
LVDS Interface
47
Off Pixel Data
47
Even Pixel Data
48
Timing Diagrams of LVDS
51
Interface Timing
54
Timing Parameters
54
Timing Diagrams of Interface Signal
55
Power On/Off Sequence
56
VDD Power Dip Condition
58
Outline Dimension
59
Reliability Test
62
Result Evaluation Criteria
62
Packing
63
Carton
63
Packing Form
63
Packing Specification
64
Markings & Others
64
Others
65
Packing Box Attach
65
Nameplate Indication
65
General Precautions
66
Handling
66
Storage
67
Operation
67
Operation Condition Guide
67
Screw List
69
LCD Exploded Drawing
69
Exploded Diagram
69
No Power & Power LED off
72
Troubleshooting
72
DC Output Voltage Is Unstable
73
Backlight Can’t be Turned on
74
Black Screen
75
Bad Screen
77
Spare Parts List
78
IF BD Layout
80
Schematics and Layouts
80
Power BD Layout
81
Keypad BD Layout
82
IF BOARD Schematics and Power Supply Circuit
83
Inverter Supply
88
S2 Release the Stand Cover
90
S3 Screw out the 3 Screws in Stand
90
S1 Release the Base from Stand
90
Assembly and Disassembly
90
Take off the Stand
91
Release the Front Bezel at 3 Sides
91
Turn over the Monitor, Release the Back-Cover
91
FW & EDID Upgrade Procedure
95
SOP of PCBA ISP Programming
95
Operational Condition
95
Adjust ISP Programming
95
Flow Char
98
4
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Acer A231H Specifications
General
Screen Size
23 inches
Contrast Ratio
1000:1
Response Time
5 ms
Aspect Ratio
16:9
Resolution
1920 x 1080
Connectivity
VGA, DVI
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