Service manual

CPU Assembly Connectors
A-9
Table A-7 Power Supply Connector J3 to Control Board Connector J301
Pin Signal Pin Signal
1 ENBL5V 8 PPWRON
2 GROUND 9 GROUND
3 GROUND 10 Reserved
4 GROUND 11 GROUND
5 ACON 12 VBAT
6 VBATMEAS 13 VBAT
7 GROUND 14 PLOADON
Signal Definition
ACON AC on LED. Drives the AC indicator LED on the keyboard.
ENBL5V Signal from System Gate Array to power supply. When high, power
supply turns on SW_+5V.
PLOADON Signal to power supply which turns on the internal VPRINT load.
PPWRON Signal to power supply which turns on VPRINT.
VBAT Battery voltage.
VBATMEAS Sense line for measuring VBAT attenuated.