I-17
Black band
Possible cause
Step
Corona failure
1
Corona failure
2
Check
Is the wire cleaner at its home
position?
Is the corona wire dirty?
6-49
HL-1850/1870N SERVICE MANUAL
Result
Remedy
No
Return the wire
cleaner to its home
position.
Yes
1) Clean the corona
wire.
2) If the problem still
appears after
cleaning, replace
the drum unit.
Ground
contacts
(2)
(2)