2L6/2N6/2N5/2N4
1-4-278
(5) Black or color streaks appear longitudinally.
Cause of trouble
1. Poor voltage applied for intermediate transfer belt cleaning.
2. Dirty secondary transfer roller.
3. Dirty separation brush.
4. Dirty fuser unit inside.
Defective part Check description Corrective Action
1
Intermediate trans-
fer belt unit
Check if paper dusts have
accumulated at the proximity of
the cleaning pre-brush.
1. If paper dusts are accumulated, clean the
pre-brush by removing the cleaning cover.
(see page 1-5-64)
2. If cleaning does not help improve the
symptom, replace intermediate transfer
belt unit.
(see page 1-5-62)
Check if the cleaning bias
connector or the connecting
terminals of high voltage are not
dirty or deformed.
1. If the connector or terminals are dirty,
clean.
2. If the connecting terminals are deformed,
correct for a proper conduction.
3. Replace the high-voltage PWB2.
(see page 1-5-89)
Check if the intermediate
transfer belt roller is
contaminated on its surface or
damaged.
1. If smear and scuff are observed on the
Intermediate transfer belt, replace the unit.
(see page 1-5-62)
2
Secondary transfer
roller
Check if the secondary transfer
roller is contaminated, deformed
or abraded.
Clean the secondary transfer roller if it is dirty.
Replace the roller if it is deformed or abraded.
(see page 1-5-66)
3
Separation brush Check if the separation brush is
dirty with paper dusts or waste
toner.
If the separation brush is dirty, clean it using a
brush.
4
Fuser unit 1. The paper separation plate is
contaminated with toner.
2. Check if the device is
adjusted for a correct paper
weight that matches the
paper in use.
1. If the paper separation plate is dirty, clean
the paper separation plate.
2. If the settings for paper weight and the
paper being used do not match, make a
proper configuration.
5
Eject guide The rib is contaminated with
toner.
If it is duty,clean.
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