List Of Troubleshooting Items; Image Failure - Canon imageRUNNER ADVANCE C255 Series Service Manual

List of Troubleshooting Items

Category
Image fail- Color Displacement in the Image Due to a Failure of the Reg-
ure istration Patch Sensor Unit (Front)/(Rear)
Fixing Wrinkle due to Foreign Matter Attached to the Fixing In-
let Guide
Fixing Wrinkle in Envelopes Due to a Problem of Feedability
between the Secondary Transfer Nip and the Fixing Nip
Dark Spots on the Halftone Image
Fogging Around the High Density Image in a Low Humidity
Environment
Operation The ITB Unit Cannot Be Removed Due to a Disengagement
failure Error of the Primary Transfer Roller
Troubleshooting by Forcible Stop of Paper Feed

Image Failure

■ Color Displacement in the Image Due to a Failure of the Registration Patch
Sensor Unit (Front)/(Rear)
Location
Registration Patch Sensor Unit (Front)/(Rear)
Cause/Condition
When a failure occurs to the Registration Patch Sensor Unit (Front)/(Rear), color displacement may occur to an output image.
Field Remedy
1. Execute the following service mode to output a test print (grid).
COPIER > TEST > PG > TYPE: 6
2. Check the output test print for any image failure (color displacement in the image).
3. Check that the following alarm has occurred.
Patch Sensor error 1: 10-0006
Patch Sensor error 2: 10-0007
4. Perform the following remedies.
1. Clean the Patch Sensor window.
2. Check the connector connection of the Patch Sensor.
3. Check the connector connection of the Patch Sensor Shutter Solenoid.
4. Replace the Registration Patch Sensor Unit.
Item
325
Reference
"Color Displacement in the Image Due to a Failure of the
Registration Patch Sensor Unit (Front)/(Rear)" on page
325
"Fixing Wrinkle due to Foreign Matter Attached to the Fix-
ing Inlet Guide" on page 326
"Fixing Wrinkle in Envelopes Due to a Problem of Feeda-
bility between the Secondary Transfer Nip and the Fixing
Nip" on page 327
"Dark Spots on the Halftone Image" on page 328
"Fogging Around the High Density Image in a Low Humid-
ity Environment" on page 329
"The ITB Unit Cannot Be Removed Due to a Disengage-
ment Error of the Primary Transfer Roller" on page 331
"Troubleshooting by Forcible Stop of Paper Feed" on page
331
6. Troubleshooting