Canon iR5570 Series, Service Manual

Page: 240 / 684

Chapter 7
7-42
2) Disconnect the two connectors [1], remove the 4 screws [2], and
remove the drum motor [3].
F-7-121
7.10.8 Photosensitive Drum Heater
7.10.8.1 Points to Note When Handling the
Photosensitive Drum
0009-5597
The machine's photosensitive drum is made of high-sensitivity
amorphous silicon, and its sensitivity can start to deteriorate depending
on how and where it is placed, requiring the following:
1. Whenever the process unit is removed from the machine or the
photosensitive drum is removed from the process unit, be sure to
protect the photosensitive drum against light. Use the photosensitive
drum protective sheet or wrap six or more sheets of A3 or larger
paper.
2. Do not place the process unit or the photosensitive drum in an area
subject to the direct rays of the sun.
3. Do not place the process unit or the photosensitive drum in an area
subject to high or low temperature or humidity or where temperature
or humidity tend to fluctuate rapidly.
4. Do not place the process unit or the photosensitive drum in an area
subject to dust, ammonium gas, or organic solvent/gas.
The foregoing requirements commonly apply to all photosensitive
drums.
7.10.8.2 Removing the Primary Fan Duct
0009-5598
1) Open the front cover.
2) Open the toner supply cover.
3) Remove the toner supply cover [2] using the two screws [1].
F-7-122
4) Remove the connector cover [2] using the screw [1].
F-7-123
5) Remove the two screws [1] and the connector [2], and pull out the
primary fan duct [3].
F-7-124
7.10.8.3 Removing the Developing Assembly
0009-7477
The machine's developing assembly is not equipped with a cover to
protect the developing cylinder.
If you must remove the developing assembly, be sure to exer-cise care
not to damage the developing cylinder.
When the developing assembly is outside the machine, be sure not to
mount the developing assembly locking assembly. The toner collecting
in the path from the hopper to the developing assembly can start to move
astray because of the vibration occurring during inspection or repair
work.
1) Open the manual feed tray cover [1], remove the screw [2] from the
door tape, and fully open the manual feed tray cover [1].
[1] [2]
[2]
[3]
[1] [1]
[2]
[1] [2]
[1]
[2]
[3]