Canon imageRUNNER ADVANCE C5255 Series Service Manual page 699

E Detailed Occurance Items
code code area
E012 0303 05 Title Faulty signal with C drum encoder sensor 2
Description The signal was not detected for 100 msec or more.
Remedy 1. Check connection of drum encoder sensor 2 (UN36).
2. Take out drum encoder sensor 2 to clean the Sensor.
3. Replace drum encoder sensor 2.
4. Check if the harness of the drum encoder sensor is
faulty (replace the harness if it's disconnected).
5. Replace the Drum Driver PCB (UN4).
E012 0304 05 Title Failure in C drum encoder sensor Wheel
Description Failure is detected with the C drum encoder sensor
Wheel
Remedy 1. Take out the drum encoder sensor to clean the Sensor
(UN35, UN36) and the Wheel.
2. Replace the drum encoder sensor Wheel.
3. Replace the drum encoder sensor.
4. Replace the Drum Driver PCB (UN4).
E012 0305 05 Title Failure in C Drum Motor Control
Description Unstable rotation of the C Drum Motor
Remedy 1. Check if the Drum is installed.
2. Take out the drum encoder sensor (UN35, UN36) to
clean the Sensor and the Wheel.
3. Remove the Process Unit and then install (reinstall) the
Process Unit.
4. Replace the Drum Unit.
5. Replace the Drum Driver PCB (UN4).
E012 0306 05 Title Failure in rotation of C Drum Motor
Description The C Drum Motor is not rotating at the specified speed/is
stopped.
Remedy 1. Check connection of the connector with the C Drum
Motor (M3).
2. Check connection of the connector with Drum Driver
PCB (UN4).
3. Check the ITB (to see if the ITB is displaced/damaged.
Refer to E075 if the ITB is displaced).
4. Replace the ITB Cleaning Blade.
5. Replace the Drum Driver PCB (UN4).
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Error•Jam•Alarm > Error Code > Error Code Details
Description
7 Error•Jam•Alarm > Error Code > Error Code Details
E Detailed Occurance Items
code code area
E012 0401 05 Title Bk Drum Encoder 1 and 2 signal error
Description Bk Drum Encoder 1 and 2 signal error (It was detected
that the motor was rotating, but not the encoders.)
Remedy 1. Check connection of drum encoder sensor 1 and 2
(UN37, UN38).
2. Check that the drum encoder sensor Wheel is properly
installed.
3. Check connection of the Drum Driver PCB (UN4).
4. Manually turn the Rotor of the Drum Motor
counterclockwise and check that the drum encoder
sensor Wheel rotates. -> If the wheel does not rotate,
replace the Drum Drive Unit.
5. Take out the drum encoder sensor to clean the Sensor
and the Wheel.
6. Replace the drum encoder sensor.
7. Replace the Drum Driver PCB (UN4).
E012 0402 05 Title Faulty signal with Bk drum encoder sensor 1
Description The signal was not detected for 100 msec or more.
Remedy 1. Check connection of drum encoder sensor 1.
2. Take out drum encoder sensor 1 (UN37) to clean the
Sensor.
3. Replace drum encoder sensor 1.
4. Check if the harness of the drum encoder sensor is
faulty (replace the harness if it's disconnected).
5. Replace the Drum Driver PCB (UN4).
E012 0403 05 Title Faulty signal with Bk drum encoder sensor 2
Description The signal was not detected for 100 msec or more.
Remedy 1. Check connection of drum encoder sensor 2 (UN38).
2. Take out drum encoder sensor 2 to clean the Sensor.
3. Replace drum encoder sensor 2.
4. Check if the harness of the drum encoder sensor is
faulty (replace the harness if it's disconnected).
5. Replace the Drum Driver PCB (UN4).
E012 0404 05 Title Failure in Bk drum encoder sensor Wheel
Description Failure is detected with the Bk drum encoder sensor
Wheel
Remedy 1. Take out the drum encoder sensor to clean the Sensor
(UN37, UN38) and the Wheel.
2. Replace the drum encoder sensor Wheel.
3. Replace the drum encoder sensor.
4. Replace the Drum Driver PCB (UN4).
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Description
7-8