2KZ/2K0
1-4-43
(6) Black streaks are printed vertically.
(7) Streaks are printed horizontally.
(8) One side of the print image is darker than the other.
Print example
Causes
Check procedures/corrective measures
Dirty contact glass.
Clean the contact glass.
Dirty slit glass.
Clean the slit glass.
Dirty or flawed drum.
Perform the drum refresh operation.
Flawed drum. Replace the drum unit (see page 1-5-16).
Deformed or worn cleaning
blade in the drum unit.
Replace the drum unit (see page 1-5-16).
Defective transfer belt.
Replace the intermidiate transfer unit (see page 1-5-17).
Defective transfer roller.
Replace the transfer roller unit(see page 1-5-17).
Dirty scanner mirror.
Clean the scanner mirror.
Print example
Causes
Check procedures/corrective measures
Dirty or flawed drum.
Perform the drum refresh operation.
Flawed drum. Replace the drum unit (see page 1-5-16).
Dirty developer section.
Clean any part contaminated with toner in the developer
section.
Poor contact of grounding ter-
minal of drum unit.
Check the installation of the drum unit. If it operates incor-
rectly, replace it (see page 1-5-16).
Print example
Causes
Check procedures/corrective measures
Defective exposure lamp.
Replace the LED PWB (see page 1-5-23).
Y113010-4
Sevice Manual