Canon CiRC2550, Service Manual, Page: 270 / 774

Chapter 7
7-47
Do not touch the ITB. If the ITB is scratched, it may cause the pickup fault
or degradation of the print quality.
In case the print quality is degraded due to touching the ITB, clean the ITB
with soft and dry cloth.
If the print quality is not improved, execute the following:
[Additional Functions] > [Adjustment/Cleaning] > [Cleaning inside Main
Unit] > [Start]
F-7-64
7) Secure the ITB unit [1] in place with the tip-resistant arm [2] (secure in
the lower slot of the 2).
F-7-65
Points to note when closing the ITB unit
When closing the ITB unit [1], be sure to remove the tip-resistant arm [2]. If
closing the ITB unit with the tip-resistant arm fixed, the tip-resistant arm
may be broken.
8) Release the each shutter lever [1] of the drum cartridge to remove the each
drum cartridge [2].
When Replacing the Drum Cartridge
Make sure that the shutter lever is at the Unlock position when removing the
drum cartridge. Removing the drum cartridge from the main body and re-
placing it with a new cartridge when the shutter lever is not at the Unlock po-
sition will cause malfunction in opening the drum cartridge shutter. As a
result, toner cannot flow from the hopper assembly to the drum cartridge
causing overflowed toner to spatter inside the body.
When the drum cartridge has been removed while the shutter lever is not at
the Unlock position, put the cartridge back and then position the shutter lever
to the Unlock position. After that the drum cartridge can be removed.
F-7-66
7.9.3 Drum ITB Motor
7.9.3.1 Before Removing the Drum ITB Moto
0014-2630
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Detach the upper rear cover. (page 10-18) [Detaching the Upper Rear
Cover]
2) Detach the lower rear cover. (page 10-18) [Detaching the Lower Rear
Cover]
3) Remove the all-night power supply PCB. (page 10-27) [Detaching the
All-Night Power Supply PCB]
7.9.3.2 Removing the Drum ITB Motor
0014-2631
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Remove the power supply fan 2 mount [1].
- 1 connector [2]
- 1 screw [3]
F-7-67
2) Disconnect the 7 connectors on the optional power supply PCB [1].
3) Disconnect the 12 connectors on the controller power supply PCB [2].
4) Remove the optional power supply/controller power supply mount [3].
- 10 wire saddles [4]
- 3 edge saddles [5]
- 1 connector [6]
- 4 screws [7]
- 2 screws [8]
[1] [2] [3]
[1]
[2]
[1]
[2]
[2] [3]
[1]