Service Manuals, User Guides, Schematic Diagrams or docs for : acer Monitor LCD Монитор LCD Acer AL922SG al922sg
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AL 922 TFT LCD MONITOR
CONTENTS
1. INTRODUCTION .......................................................................................................................................... 3
1.1 Scope.....................................................................................................................................................................3
1.2 Description............................................................................................................................................................3
2. ELECTRICAL REQUIREMENTS ................................................................................................................. 4
2.1 Standard Test Conditions......................................................................................................................................4
2.2 Lcd Monitor General Specification.......................................................................................................................4
2.3 Lcd Panel Specification ........................................................................................................................................5
2.4 Input Signals .......................................................................................................................................................11
2.5 Controls ..............................................................................................................................................................15
2.6 White Color Temperature ...................................................................................................................................17
2.7 Power Supply ......................................................................................................................................................18
2.8 Plug & Play(Edid)...............................................................................................................................................18
2.9 Audio Technical Specification ............................................................................................................................19
3. VL-901 DISPLAY CONTROL BOARD....................................................................................................... 20
3.1 Description..........................................................................................................................................................20
3.2 Features ..............................................................................................................................................................20
3.3 Block Diagram ....................................................................................................................................................21
3.4 Connector Locations...........................................................................................................................................22
3.5 Connector Type...................................................................................................................................................22
3.6 Connector Pin Assignment..................................................................................................................................22
4. VK901 Control Panel Board ..................................................................................................................... 25
4.1 Description..........................................................................................................................................................25
4.2 Connector and Switch Locations ........................................................................................................................25
4.3 Connector type ....................................................................................................................................................25
4.4 Connector pin Assignment ..................................................................................................................................25
4.5 Switch definition..................................................................................................................................................26
4.6 LED definition.....................................................................................................................................................26
5. INVERTER BOARD.................................................................................................................................... 27
5.1 Description..........................................................................................................................................................27
5.2 Electrical characteristics ....................................................................................................................................27
5.3 Connector locations ............................................................................................................................................28
6. DC/DC POWER and Audio CKT VM-902 ................................................................................................. 29
6.1 Input:...................................................................................................................................................................29
6.2 Output: ................................................................................................................................................................29
6.3 Efficiency. ...........................................................................................................................................................29
6.4 Connector Locations...........................................................................................................................................29
7. TROUBLESHOOTING ............................................................................................................................... 31
7.1 Main Procedure ..................................................................................................................................................31
8. MECHANICAL REQUIREMENTS .............................................................................................................. 36
8.1 Vibration and Shock............................................................................................................................................36
8.2 Package Drop Specification ...............................................................................................................................36
8.3 Dimension Size and Weight.................................................................................................................................37
8.4 Gap Spec. ............................................................................................................................................................37
8.5 Tilt Base Rotation ...............................................................................................................................................39
8.6 Swivel Base Rotation...........................................................................................................................................39
8.7 Plastic Material ..................................................................................................................................................40
8.8 GAP Spec. ...........................................................................................................................................................40
9. Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst) ...................................................... 40
9.1 Peak Voltage .......................................................................................................................................................40
9.2 Polarity ..............................................................................................................................................................40
9.3 Repetition Frequency of the impulse...................................................................................................................40
9.4 Rise-Time ............................................................................................................................................................41
9.5 Impulse Duration ................................................................................................................................................41
9.6 Relation to Power Supply....................................................................................................................................41
1
9.7 Burst Duration ....................................................................................................................................................41
9.8 Burst Period ........................................................................................................................................................41
9.9 Climatic Conditions ............................................................................................................................................41
9.10 Test Procedure ....................................................................................................................................................41
10. Power Line Surge Test (IEC 61000-4-5 Surge) ....................................................................................... 43
10.1 Climatic Condition..............................................................................................................................................43
10.2 Test Conditions: ..................................................................................................................................................43
11. ENVIROMENT REQUIREMENT ................................................................................................................ 44
11.1 Operating ............................................................................................................................................................44
11.2 Storage or Shipment............................................................................................................................................44
12. REGULATION COMPLIANCE ................................................................................................................... 45
12.1 This product comply to the most current revisions of following regulations:.....................................................45
12.2 Electrostatics Discharge (ESD) ..........................................................................................................................46
13. QUALITY AND RELIABILITY .................................................................................................................... 47
13.1 Quality Assurance...............................................................................................................................................47
13.2 Reliability............................................................................................................................................................47
Appendix A: Parts Lists ---------------------------------------------------------------------------------------- 48
Appendix B: Display Unit Assembly ------------------------------------------------------------------------- 53
Appendix C: P.C.B.A ASSEMBLY -------------------------------------------------------------------------- 61
2
1. INTRODUCTION
1.1 Scope
This specification defines the requirements for the 19" MICRO-PROCESSOR based Multi-
mode supported high resolution color LCD monitor, This monitor can be directly connected
to general 15 pin D-sub VGA connector and DVI-D digital connector, eliminates the
requirement of optional special display card. It also supports VESA DPMS power
management and plug & play function. There is a build-in stereo audio amplifier with
volume control to drive a pair of speakers.
1.2 Description
The LCD monitor is designed with the latest LCD technology to provide a performance
oriented product with no radiation. This will alleviate the growing health concerns. It is also
a space saving design, allowing more desktop space, and comparing to the traditional CRT
monitor, it consumes less power and gets less weight in addition MTBF target is 20k
hours or more.
3
2. ELECTRICAL REQUIREMENTS
2.1 Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light: 225 lux
Viewing distance : 50 cm in front of LCD panel
Warrn up time
All specifications: 30 minutes
Fully functional: 5 seconds
Measuring Equipment: Chroma 2250 signal generator or equivalent, directly
Connected to the monitor under test.
Minolta CA100 photometer, or equivalent
Control settings
User brightness control: Maximum (unless otherwise specified )
User contrast control: Typical (unless otherwise specified )
User red/white balance,
Green/white balance and
Blue/white balance control: In the center (unless otherwise specified )
Power input : 110Vac or 230Vac
Ambient temperature : 20 ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo