Utax CA-3100, Service Manual

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7-9
Troubleshooting
＞
Image formation problems
[CONFIDENTIAL]
(1-6)Black streaks appear longitudinally
Print example Cause of trouble
1 Dirty charging roller
2 Flawed or dirty drum unit
3 Damaged or paper dust bitten cleaning blade
Defective part Check description Corrective Action
1
Drum unit Check if drum is dirty on its surface. Execute drum refreshing.
(System Menu >Adjustment / Maintenance)
1. Check if the drum has
scratches.
2. Check whether the edge of the
cleaning blade is damaged.
3. Check whether it is abraded or
paper dusts are accumulated.
4. Check whether toner is accumu-
lated in the cleaning section.
Replace the drum unit.
2
Charging roller unit Check if there is no toner streaks on
the surface of the charging roller. If the charging roller has streaks on its surface,
clean the charging roller. Replace the charging
roller, if necessary.
3
Fuser unit
1. Check if the fuser roller is con-
taminated with toner.
If the paper separation puddle is dirty, clean the
paper separation puddle.
2. Check the device is adjusted for
a correct paper weight that
matches the paper in use.
If the settings for paper weight and the paper being
used do not match, make a proper configuration.
4
Eject guide The Rib is contaminated with toner. If it is duty,clean.