Canon PIXUS 50i Service Manual page 36

J305 (Panel board I/F)
No. Signal name
1 LED_A LED drive power supply
2 LED_RSM Error LED
3 LED_PWR Power LED
4 POWER Power key
5 RESUME Resume key
6 GND GND
7 PES PE sensor detection signal
8 VSEN_5V PE sensor drive power supply
9 ASFS ASF sensor detection signal
10 GND GND
J306 (IrDA board I/F)
No. Signal name
1 5V IrDA module LED drive power supply
2 5V IrDA module LED drive power supply
3 GND GND
4 IRTXD IrDA sending data
5 GND GND
6 IRRXD IrDA receiving data
7 GND GND
8 GND GND
9 GND GND
10 GND GND
11 IRMODE IrDA mode signal
12 3.3V IrDA module logic drive power supply
J401 (DCD board I/F)
No. Signal name
1 Vbus Cable power supply
2 D- Data signal line
3 D+ Data signal line
4 GND Cable GND
Function
Function
Function
3 - 5
Input/Output
OUT
OUT
OUT
IN
IN
IN
OUT
IN
IN
Input/Output
OUT
OUT
OUT
IN
I/O
OUT
Input/Output
OUT
I/O
I/O