Confidential
9-42
I-17
Black band
Possible cause
Step
Check
Result
Remedy
Ground
contacts
Corona failure
1
Is the wire cleaner at its
home position?
No
Return the wire cleaner
to its home position.
Corona dirty
2
Is the corona wire dirty?
Yes
1) Clean the corona
wire.
2) If the problem still
appears after
cleaning, replace the
drum unit.