Cleaning The Registration Patch Sensor Unit - Canon imageRUNNER ADVANCE C255 Series Service Manual

4. Clean the [A] part of the Drum Unit (Y) [1] with lint-free paper [3].

Cleaning the Registration Patch Sensor Unit

Be sure to clean the Registration Patch Sensor Unit when replacing the ITB Unit.
Preparation
■ Preparation
1. "Removing the Waste Toner Container" on page 221
2. Remove the Drum Unit
3. "Removing the ITB Unit" on page 225
■ 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]
[A]
[1]
(Bk)"Removing the Drum Unit (Y/M/C/Bk)" on page
4. Parts Replacement and Cleaning
[3]
222.
298
[A]
[1]