Canon PIXUS 50i Service Manual page 38

CN2 (Logic board I/F)
No. Signal name
1 POWER_SW Optional battery start-up signal
2 BAT_TXD Serial sending data to the optional battery charger
3 VH_ON Head drive power supply VH output enable
4 POWER_ON DC-DC converter on/off control
5 VIN Power supply voltage
6 GND GND
7 2.5V 2.5V logic drive power supply
8 5V 5V logic driver power supply
9 GND GND
10 VM 24V motor drive power supply
CN3 (USB/DC board I/F)
No. Signal name
1 GND AC adapter GND
2 VIN AC adapter output
3 CNT Power supply FET switch control
CN4 (Battery I/F)
No. Signal name
1 BAT Optional battery output
2 POWER_SW Optional battery start-up signal
3 BAT_TXD Serial sending data to the optional battery charger
4 GND GND
5 GND GND
Function
Function
Function
3 - 7
Input/Output
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
Input/Output
IN
IN
Input/Output
IN
OUT
OUT