Canon DU-82, Service Manual

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V. MALFUNCTION TROUBLESHOOTING
N-1 Power ON failure
<Possible causes>
1. The duplexing unit is not set correctly.
Action: Re-set it.
2. Poor connection with the connector of 24 V supply line.
Action: Reconnect the connector J2001 on the duplexing driver PCB correctly.
3. The duplexing driver PCB failure
Action: Replace it.
N-2 Side registration motor failure
<Possible causes>
1. Poor connection with the connector of the SIDE REGISTRATION MOTOR DRIVE signal line.
Action: Reconnect the connector J2005 on the duplexing driver PCB correctly.
2. The side registration motor failure
Action: Replace it.
3. The duplexing driver PCB failure
Action: Replace it.
N-3 Duplexing unit motor failure
<Possible causes>
1. Poor connection with the connector of the DUPLEXING MOTOR DRIVE signal line.
Action: Reconnect the connector J2004 on the duplexing driver PCB correctly.
2. The duplexing unit motor failure
Action: Replace it.
3. The duplexing driver PCB failure
Action: Replace it.
N-4 Reversing roller release solenoid failure
<Possible causes>
1. Poor connection with the connector of the REVERSING ROLLER RELEASE SOLENOID
DRIVE signal line.
Action: Reconnect the connector J2009 on the duplexing driver PCB correctly.
2. The reversing roller release solenoid failure
Action: Disconnect the connector J2009 on the reversing roller release solenoid. Measure
the resistance between the connector J2009-1 and J2009-2 of the cable.
If it is not about 50
Ω
, replace the reversing roller release solenoid.
3. The duplexing driver PCB failure
Action: Replace it.
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CHAPTER 4