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4. VK901 Control Panel Board
4.1
Description
The VT-901 is designed to offer a user interfaced control panel which passes and receives
signals to and from VL-901 display control board.
4.2
Connector and Switch Locations
4.3
Connector type
Location
Type
Maker
Number of pins
J1 4500-10 E&T
10
J6 4500-11 E&T
11
J3 87502-0200
ACER 2
J4 87502-0200
ACER 2
J2 SCJ-0348-C
SC
9
4.4
Connector pin Assignment
4.4.1
J1
Pin NO.
Signal
Comment
1 NC
NC
2
LED-Y
Power saving mode
3
LED-G
Monitor is ON
4 GND
GND
5
KEY-POWER
Power ON/OFF key
6
KEY-DOWN
Function select counter-clockwise key
7
KEY-R
Adjust up key
8
KEY-L
Adjust down key
9
KEY-UP
Function select counter-clockwise key
10 GND
GND
4.4.2
J6
Pin NO.
Signal
Comment
1
VOL
Volume ON/OFF Control
2 GND
GND
3
LIN1
Audio Volume Adjust Line INL
4
RIN1
Audio Volume Adjust Line INR
5
RIN2
Audio Volume Adjust Line OUTR
Summary of Contents for AL922
Page 21: ...21 3 3 BLOCK DIAGRAM ...
Page 31: ...31 7 TROUBLESHOOTING 7 1 Main Procedure ...
Page 32: ...32 7 1 1 Power Circuit Troubleshooting ...
Page 33: ...33 7 1 2 Backlights Troubleshooting ...
Page 34: ...34 7 1 3 Performance Troubleshooting ...
Page 35: ...35 7 1 4 Function Troubleshooting ...
Page 38: ...38 Back Cover Cable Cover Gap 0 8 mm B 1 2 mm Base Cover Neck Cover Gap 0 8 mm C 1 2 mm ...
Page 42: ...42 WAVESHAPE ...
Page 48: ...48 APPENDIX A PARTS LISTS ...
Page 50: ...50 A 4 461A7830011 Firmware Ctrl Board VL 901 ...
Page 53: ...53 APPENDIX B DISPLAY UNIT ASSEMBLY ...