Canon S520 Service Manual page 95

S750
CN402 (Ink sensor connector)
Pin No. Signal
1 INK_PWM
2 ...
3 INKS
CN501 (DC power connector)
Pin No. Signal
1 +5V
2 +5V-GND
3 VH
4 VH-GND
5 VM
6 VM-GND
7 PW_COT
CN502 (Paper feed motor connector)
Pin No. Signal
1 LFA
2 LFB
3 LFA
4 VSEN
5 LFB
CN503 (Pump sensor connector) / Carriage motor connector
Pin No. Signal
1 VSEN
2 ...
3 SNS_PG
4 CRA
5 CRB
CN505 (ASF motor connector)
Pin No. Signal
1 ASFA
2 ASFB
3 ASFA
4 ASFB
CN506 (Purge motor connector)
Pin No. Signal
1 COM
2 PGA
3 PGA
4 PGB
5 PGB
IN/OUT Function
OUT Ink sensor photo LED drive signal
... GND
IN Voltage varies according to the degree of reflected light
IN/OUT Function
IN +5VDC
... GND
IN +19V
... GND
IN +27VDC
... GND
OUT Power output voltage (HVH,VM) control signal
IN/OUT Function
OUT Paper-feed motor phase A
OUT Paper-feed motor phase B
... Paper-feed motor phase A
OUT LF encoder sensor power source
OUT Paper-feed motor phase B
IN/OUT Function
OUT Ink sensor photo LED drive signal
... GND
IN Pump sensor sense signal High (sense)/Low
OUT Carriage motor phase A
OUT Carriage motor phase B
IN/OUT Function
OUT ASF motor phase A
OUT ASF motor phase B
OUT ASF motor phase A
OUT ASF motor phase B
IN/OUT Function
... Common terminal
OUT Purge motor phase A
OUT Purge motor phase A
OUT Purge motor phase B
OUT Purge motor phase B
4-13
Part 4: Appendix