Canon imageRUNNER C1335 Series, Service Manual

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Disassembly/Assembly > Image Formation System > Removing the ITB Unit > Cleaning the Registration Patch Sensor Unit
Disassembly/Assembly > Image Formation System > Removing the ITB Unit > Cleaning the Registration Patch Sensor Unit
1) Put the removed Drum Unit (Y) [1] on a sheet of paper [2].
2) Cover the removed Drum Unit (Y) [1] with a paper [3] to block the light for Drum (4).
[1]
[2]
[3]
[4]
3) Clean the [A] part of the Drum Unit (Y) [1] with a blower [2].
4) Clean the [A] part of the Drum Unit (Y) [1] with lint-free paper [3].
[1] [1]
[2] [3]
[A] [A]
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Cleaning the Registration Patch Sensor Unit
Be sure to clean the Registration Patch Sensor Unit when replacing the ITB Unit.
Preparation
● Preparation
1) Remove the Waste Toner Container.
2) Remove the Drum Unit (remove Bk color).
3) Remove the ITB Unit.
● Procedure
1) While opening the RD Sensor Shutter [1], clean the surface [A] of the Patch Sensor with a
blower. After cleaning, check that there is no soiling caused by toner on the surface [A] of
the sensor.
If the soiling cannot be removed, perform step 2.
2) While opening the RD Sensor Shutter [1], clean the surface [A] of the Patch Sensor with
tightly-wrung cotton swab moistened with water in a single direction.
CAUTION:
• Do not use alcohol because it causes melting and clouding of the sensor window.
• Do not dry wipe the sensor window because it is charged to attract toner.
[1]
[A]
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