Acer AL1931 AL1931 Service Guide - Page 24

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 ~ 3.3V 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. 1 2 Symbol HV LV Description High Voltage 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). 23