23
2.
Pin Assignments
2-1 Output Connector#1 (J802 / E&T 4500-09 / 9P P2.0)
Pin No.
Symbol
Description
1
+5Vaudio
+5Vdc for Audio ckt
2
GND/Audio
Ground for Audio ckt
3,4
GND
Common Ground
5
Brightness
Brightness adjustable range: 0 V<min> ~ 3.3V<max>
6 Enable
Backlight ON/OFF control (Active High)
ON:1.5~3.3V, OFF:-0.3~1.0V
7,8
Vcpu
+5Vdc supply to micro-P, always on.
9
Vcc
+12 Vdc supply to mainboard.
2-2. Output Connector#2 (for CCFLs, J940,J980,J941,J981)
Connector type: ACES 88225-0211 P8.0 or alternative
Pin No.
Symbol
Description
1 HV
High
Voltage
2 LV
Low
Voltage
2.8 Plug & Play (EDID)
The monitor will be capable of sending a VESA standardized EDID file through the DDC
(pins 12, 15 of the VGA connector).
Summary of Contents for AL1931
Page 27: ...26 3 3 BLOCK DIAGRAM ...
Page 34: ...33 5 TROUBLESHOOTING 5 1 Main Procedure ...
Page 35: ...34 5 1 1 Power Circuit Troubleshooting ...
Page 36: ...35 5 1 2 Backlights Troubleshooting ...
Page 37: ...36 5 1 3 Performance Troubleshooting ...
Page 38: ...37 5 1 4 Function Troubleshooting ...
Page 44: ...43 WAVESHAPE ...
Page 50: ...49 APPENDIX A PARTS LISTS ...
Page 51: ...50 A FRU Board A 1 454AA030001 PCBA Key Board VK 903 ...
Page 52: ...51 A 2 461AA030001 Firmware CTRL Board VL 903 ...
Page 53: ...52 A 3 455AA030001 PCBA D D INV Board Vp 903 ...
Page 54: ...53 Appendix B DISPLAY Assembly ...
Page 55: ...54 ...
Page 58: ...57 ...
Page 60: ...60 Appendix C PCBA Assembly ...
Page 61: ...61 ...
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