Canon IR2800, IR3300, IR2200 manual 16 T

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

3.10The copy has a white spot (vertical).

3.11The copy has a white line (vertical).

Exposure system

1)Generate a halftone test print in service mode. Enter ‘4’ to the following: COPIER>PG>TYPE. Does the output image have a white line/spot?

NO: Go to step 7.

dirt (lint)

2)Is there dirt (lint) in the drum unit or around the laser optical path of the developing assembly?

YES: Remove the dirt (lint).

Transfer charging roller, Separation static eliminator

3)Is the transfer charging roller or the separation static eliminator soiled or coated with foreign matter?

YES: Clean the transfer charging roller or the separation static elimina- tor. If the problem is still not corrected, replace the transfer charg- ing roller or the separation static eliminator.

Developing assembly

4) Is the coating of toner on the developing cylinder even?

NO: Check the edge of the developing assembly. If the developing as- sembly is without toner, see the descriptions under “The Add Toner message fails to go ON.”

Fixing film

5)Is there a scratch in the peripheral direction of the fixing film? YES: Replace the fixing film unit

Fixing assembly inlet

6)Is there dirt or foreign matter on the fixing assembly inlet? YES: Clean the inlet.

Photosensitive drum

7)Is there a scratch in the peripheral direction of the photosensitive drum? YES: Replace the drum unit.

• Be sure to identify the cause of the scratch.

Exposure system, Standard white plate

8)Clean the copyboard glass (stander white plate) and the mirrors. Is the problem corrected?

YES: End.

NO: Change the setting in the following service mode to change the point of shading measurement: FUNCTION>SHDG-POS. If the problem is not corrected after several attempts, replace the copyboard glass.

4-16 T COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001