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Check item
Transfer fail-
Check the evenness of halftone density. Check whether
ure
uneven image or foggy image appears.
Uneven pitch
Check whether lines appear on the image in the horizontal
scanning direction.
Uneven densi-
Check the density difference between the front and rear
ty(rear/front)
sides.
■ Horizontal line (TYPE=8/9/10)
Check item
Black line
Check whether black lines appear on the image.
White line
Check whether white lines appear on the image.
Uneven pitch
Check whether lines appear on the image in the horizontal
scanning direction.
Uneven densi-
Check the density difference between the front and rear
ty(rear/front)
sides.
Check method
Check method
247
Assumed cause
Transfer system failure is considered.
Drum failure, developing system failure, laser exposure
system failure or drive-related failure is considered.
Drum failure or developing system failure isconsidered.
Assumed cause
Laser light path failure, developing system failure, cleaning
(drum) failure or transfer roller failure is considered.
Developing system failure is considered.
Drum failure, developing system failure, laser exposure
system failure or drive-related failure is considered.
Drum failure or developing system failure isconsidered.
6. Troubleshooting
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