Acer AL722 Appendix
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1. ELECTRICAL REQUIREMENTS..................................................................... 2
A. LCD Panel Specification............................................................................................................................................2
B. CONTROLS ..............................................................................................................................................................3
C. Power Management ...................................................................................................................................................3
D. Display Modes FOR Inspections ...............................................................................................................................4
2. VL-710 DISPLAY CONTROL BOARD............................................................. 5
A. Description.................................................................................................................................................................5
B. Features......................................................................................................................................................................5
C. BLOCK DIAGRAM..................................................................................................................................................5
D. Connector Locations ..................................................................................................................................................6
E. Connector Type..........................................................................................................................................................6
F. Connector pin assignment..........................................................................................................................................6
3. VK-715 Control Panel and Audio Board ............................................................ 9
E. Description.................................................................................................................................................................9
F. Electrical characteristics (Tamb=25°)........................................................................................................................9
G. Connector and Switch Locations ...............................................................................................................................9
H. Connector and Switch Locations ...............................................................................................................................9
I. Connector pin Assignment.........................................................................................................................................10
J. J2................................................................................................................................................................................10
K. Switch definition........................................................................................................................................................11
L. LED definition ...........................................................................................................................................................11
M. Variable resistor .........................................................................................................................................................11
4. DC/DC POWER and Audio CKT VM-517 ........................................................ 12
A. Input:..........................................................................................................................................................................12
B. Output: .......................................................................................................................................................................12
C. Efficiency: 80% min at Maximum Load....................................................................................................................12
D. Connector Locations ..................................................................................................................................................12
E. Connector type for VM-515.......................................................................................................................................12
F. Connector pin Assignment.........................................................................................................................................13
5. PK070011400/LIENHANG INVERTER BOARD............................................. 14
A. Description.................................................................................................................................................................14
B. Electrical characteristics ............................................................................................................................................14
C. Connector locations ...................................................................................................................................................15
D. Connector pin Assignment.........................................................................................................................................15
6. AC Adapter (LSL9901B12320)............................................................................ 16
A. Quick specification review ........................................................................................................................................16
7. CIRCUIT DESCRPTION .................................................................................... 16
A. Display-Controller .....................................................................................................................................................16
B. Circuit of Plug and Play.............................................................................................................................................16
C. Power Regulator ........................................................................................................................................................16
8. Introduction ........................................................................................................... 17
A. Front Panel Control and Led......................................................................................................................................17
B. Rear Panel connector Input Signals ...........................................................................................................................18
C. Rear Panel Cable and Connector ...............................................................................................................................18
9. TROUBLESHOOTING........................................................................................ 19
A. Main Procedure..........................................................................................................................................................19
Appendix A: Parts Lists ----------------------------------------------------------------------------------------
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Appendix B: Display Unit Assembly ------------------------------------------------------------------------29
Appendix C: P.C.B.A Assembly ------------------------------------------------------------------------------
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