Canon imageRUNNER 5055 series, Service Manual

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Chapter 9
9-22
F-9-44
The pin should be fit back in the initial position after completing the forego-
ing steps and before mounting the fixing upper unit on the machine.
12) Release 2 hooks [1] that fix the bearings at the both end of the fixing
roller to remove the fixing roller assembly [2].
F-9-45
- When replacing gear/bushing/bearing only (that is, the fixing roller not
to be replaced), wrap paper around the roller before starting the
replacement. This is to prevent any possible damage to the roller surface
in such event that the bearing is fallen on it during the work.
- The removed roller should be placed on paper temporarily during the
work.
F-9-46
13) Remove 2 C-rings [1], 2 gears [2], 2 bushings [3] and 2 bearings from
the fixing roller assembly.
F-9-47
As aged, the fixing roller surface may be discolored by heat. This, however,
will not affect the performance. The fixing roller surface color is different
depending on the vendors but any rollers meet the specified performance.
9.5.4.3 Points to Note When Mounting the Fixing Roller
0015-5049
iR5065 / iR 5055 / iR5075 / / /
- A new fixing roller is wrapped in paper. The paper should not be
removed until the fixing roller is placed in the specified position in the
fixing upper unit and the bearings at the both ends are fixed with hooks.
This is to prevent any possible damage to the roller surface in such event
that the bearing is fallen on the fixing roller.
- Pay attention to the orientation of the bearings [1] and the bushings [2].
Be sure that the grooved side of bearing faces inside and the collar of the
bushing faces outside. Also the rear and front fixing gears shape
differently; mount the gear [3] (w/ larger protrusion) rear and the gear [4]
(w/ smaller protrusion) front.
F-9-48
- When fixing the C-ring [1], be sure to hook the 2 ends of the C-ring [1]
on the protruded parts of the fitting gear and fit the 3 protrusions of the C-
ring [2] properly into the grooves on the fixing roller.
F-9-49
- When mounting the fixing roller, cares should be taken not to hit the
thermal switch with the fixing roller.
- After mounting the fixing roller, make sure that the main thermistor [1],
the shutter thermistor [2] and the sub thermistor [3] are parallel and
contact with the fixing roller.
[1]
[2]
[3]
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