Kyocera FS-9120DN Service Manual page 102

FS-9120DN/9520DN
(9) Black dots appear on
the image.
Causes
1. Dirty or flawed drum.
2. Deformed or worn cleaning blade.
3. Dirty drum separation claws.
4. Dirty the heat roller separation claws.
(10) Image is blurred.
Causes
1. Deformed press roller.
2. Paper conveying section drive problem.
(11) The leading edge of
the image is mis-
aligned.
Causes
1. Feed clutch, paper feed clutch, MP paper
feed clutch or registration clutch installed or
operating incorrectly.
2. Defective engine controller PWB.
1-5-32
Causes
1. Dirty or flawed drum.
2. Deformed or worn cleaning blade.
3. Dirty drum separation claws.
4. Dirty heat roller separation claws.
Perform the drum refresh operation. If the drum is flawed, replace
the drum unit.
Replace the drum unit (see page 1-6-14).
Clean the drum separation claws.
Clean the heat roller separation claws.
Causes
1. Deformed press roller.
2. Paper conveying section drive problem.
Replace the press roller (see page 1-6-18).
Check the gears and belts and, if necessary, grease them.
Causes
1. Feed clutch, paper feed clutch, MP paper feed
clutch or registration clutch installed or
operating incorrectly.
2. Defective engine controller PWB.
Check the installation position and operation of the feed clutch,
paper feed clutch, MP paper feed clutch and registration clutch. If
any of them operates incorrectly, replace it.
Replace the engine controller PWB (see page 1-6-24).
Check procedures/corrective measures
Check procedures/corrective measures
Check procedures/corrective measures