Canon iR2020 Series Service Manual page 307

Display Detail
Main Cause/Symptom
code Code
E500 0001 Finisher communication error
Data communication could not be
performed normally. It has been retried
three times in vain.
E520 0001 - Offset motor or finisher controller PCB failure
- Offset HP sensor failure
- The offset motor was driven for 1000
ms in the HP sensor approach direction,
but the offset HP sensor did not turn on.
0002 - Offset motor or finisher controller PCB failure
- Offset HP sensor failure
- The offset motor was driven for 1000
ms in the HP sensor escape direction, but
the offset HP sensor did not turn off.
E531 0001 - Staple unit failure
- Staple HP sensor failure
- Finisher controller PCB failure
- The staple home position was not left
when 400 ms have lapsed since start of
staple operation.
0002 - Staple unit failure
- Staple HP sensor failure
- Finisher controller PCB failure
- The staple home position had been left
once, but it was not reached again when
400 ms have lapsed since start of staple
operation. In addition, the staple home
position could not be reached by
performing reverse operation for 400 ms.
T-13-8
Countermeasure
- Check the connectors of the finisher controller
PCB and DC controller PCB for normal connection.
- Replace the finisher controller PCB.
- Replace the DC controller PCB.
- Check the connector of the offset HP sensor.
- Check the connector of the offset motor.
- Replace the offset HP sensor.
- Replace the offset motor.
- Replace the finisher controller PCB.
- Check the connector of the offset HP sensor.
- Check the connector of the offset motor.
- Replace the offset HP sensor.
- Replace the offset motor.
- Replace the finisher controller PCB.
- Check the connector of the staple unit.
- Replace the staple unit.
- Replace the finisher controller PCB.
- Check the connector of the staple unit.
- Replace the staple unit.
- Replace the finisher controller PCB.
Chapter 13
13-5