Jam Detection; Outline; Jams - Canon 2/3 Hole Puncher Unit-A1 Service Manual

Jam Detection

Outline

The puncher unit is equipped with the following sensors to detect the jam at the punch operation.
• Punch HP Sensor 1 (PS303)
• Punch HP Sensor 2 (PS304)

Jams

The conditions for detecting whether a jam has occurred are stored in the puncher controller PCB in advance. A jam is determined
by detection states of the sensors at the check timing.
When the puncher controller PCB determines that a jam has occurred, it stops feeding/delivering paper and notifies the host
machine.
Jam type
Punch jam
Error avoidance jam
PS303
Sensor
PS303 When the punch HP sensor 1 (PS303) and punch HP sensor 2 (PS304) cannot
PS304 detect the home position of the punch again, even when the specified time
elapses after the sensors have detected the home position during the punch
operation.
- When any of the following errors is detected during feeding operation.
PS304
Jam description
• Punch motor (E590)
• Punch shift motor (E593)
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2. Technical Explanation