Canon BJC-55 Service Manual page 195

BJC-50
CNOP1 (Optional ASF and Connector)
Pin No. Signal name
1 OP-VH
2 OP-Vcc1
3 RXD0
4 TXD0
5 SCLK0
6 +5.0V (Vcc3)
7 OP-ON
8 GND
CNSEN1 (Home Position Sensor/Paper End Sensor Connectors)
Pin No. Signal name
1 PES
2 +5.0V (Vcc1)
3 GND
4 HPS
5 +5.0V (Vcc3)
6 RTC (Vdd)
7 GND
CNSEN2 (Paper Delivery Sensor Connectors)
Pin No. Signal name
1 +5.0V (Vcc3)
2 FIRRXD
3 +5.0V (Vcc3)
IN/OUT Description
OUT Motor drive (24V power supply)
OUT Microcomputer drive (5V power supply)
IN/OUT Serial data receiver
IN/OUT Serial data transmitter
IN Paper end sensor read signal
IN Power on/off drive control signal
IN/OUT Description
OUT Paper end sensor sensing signal
OUT Home position sensor sensing signal
Timer IC drive signal
IN/OUT Description
OUT Delivery sensor sensing signal
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Part 5: Maintenance