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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.
(2)
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.
(2)