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Brother International DCP 8040 Service Manual - Page 251
Black band
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CHAPTER 6 TROUBLESHOOTING I-17 Black band Possible cause Corona failure Corona failure Step Check 1 Is the wire cleaner at its home position? 2 Is the corona wire dirty? Result No Yes Remedy Return the wire cleaner to its home position. 1) Clean the corona wire. 2) If the problem still appears after cleaning, replace the drum unit. Ground contacts (2) (2) 6-48
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CHAPTER 6 TROUBLESHOOTING
6-48
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 failure
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)