Canon CiRC2550, Service Manual

Page: 526 / 774

Chapter 15
15-35
Description
Although the drum cartridge (developing assembly) was mounted, the message "Insert drum cartridge" did not disappear. Therefore, all the connectors of the
DC Controller PCB were re-fit for solution.
Field Remedy
1. Re-mount the drum cartridge.
2. If the symptom still occurs, re-fit all the connectors of the DC Controller PCB.
3. If Step 2 does not work, replace the drum cartridge with a new one.
4. If the symptom still occurs, replace the DC Controller PCB with a new one.
FM2-8263 DC Controller PCB Assembly
15.3.3.4.3 Message "Check fixing unit cooling mechanism." persists: DC Driver PCB is faulty
0016-4067
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
[ Case in the field ]
Description
Since the message "Check fixing unit cooling mechanism" persisted, the DC Driver PCB was replaced with a new one for solution.
Reference: This message is displayed when the lock signal of the fixing film end cooling fan does not turn ON for 1 sec continuously, or when the input value
of the fan shutter position detection sensor is not detected for 2 sec or more in a state in which the fan shutter detects the home position to move to the target
position.
Field Remedy
1. Re-fit all the connectors of the DC Driver PCB.
2. If Step 1 does not work on the symptom, replace the DC Driver PDB with a new one.
FM2-8264 DC Driver PCB Assembly
15.3.3.4.4 Message "Insert drum cartridge." appears with more than 1 color: Bushing of primary charging roller is broken
0017-8305
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550
[ Inspected by Canon Inc. ]
Description
Since the message "Insert drum cartridge." was displayed with more than 1 color though all the 4 drum cartridges had been installed, the relevant cartridges
were replaced by new ones for solution.
Field Remedy
Perform the following procedure on each relevant cartridge one after another.
1. Take out the relevant cartridge.
2. Holding the claws [b], remove [a] from the rear side of the drum cartridge.
F-15-49
3. Look into the drum cartridge and check if the white bushing [c] and the cored bar of primary charging roller are in the condition shown in the photo below;
if so, go back to Step1 for checking the next cartridge.
F-15-50
4. Look into the drum cartridge and check if the white bushing [c] and the cored bar of primary charging roller are in the condition shown in the photo below;
if so, replace the drum cartridge with a new one.