Cleaning The Registration Patch Sensor Unit - Canon imageRUNNER C1335 Series Service Manual

4
Disassembly/Assembly > Cleaning Procedure > Cleaning the Registration Patch Sensor Unit > Procedure

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(Refer to page 4-108).
2) Remove the Drum Unit (remove Bk color) (Refer to page 4-109).
3) Remove the ITB Unit(Refer to page 4-112).
■ 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]
4 Disassembly/Assembly > Cleaning Procedure > Cleaning the Registration Patch Sensor Unit > Procedure
NOTE: How to install the ITB Unit
1) Hold the 2 handles [1], align the 2 protrusions [B] of the ITB Unit [2] with the 2
grooves [A] of the rails of the ITB Unit, and then put the unit inside the machine.
[A]
[A]
F-4-463
[1]
[B]
[1]
[2]
4-175
[B] [A]
F-4-464
4-175