2KA
1-4-58
(8) A line appears laterally.
(9) Dots appear on the image.
(10) The leading edge of the image is consistently misaligned.
(11) The leading edge of the image is sporadically misaligned.
Copy example Causes Check procedures/corrective measures
Flawed drum. Replace the drum unit (see page 1-5-26).
Dirty developing section. Clean any part contaminated with toner or carrier in the
developing section.
Leaking separation electrode. Clean the separation electrode.
Poor contact of grounding terminal of
drum unit.
Check the mounting state of the image formation holder. If
any problem is found, repair it (see page 1-5-21).
Copy example Causes Check procedures/corrective measures
Dirty or flawed drum. Perform the drum refresh operation (see page 1-3-117).
If the drum is flawed, replace the drum unit (see page 1-5-
26).
Deformed or worn cleaning blade of
the drum unit.
Replace the drum unit (see page 1-5-26).
Flawed developing roller. Replace the developing unit (see page 1-5-25).
Dirty fuser belt or press roller (inner
fuser unit).
Replace the fuser unit (see page 1-5-31).
Copy example Causes Check procedures/corrective measures
Registration clutch operating incor-
rectly.
Check the installation of the registration clutch. If it operates
incorrectly, replace it.
Misadjusted the deflection in the
paper.
Run maintenance mode U051 to readjust the deflection in
the paper (see page 1-3-28).
Misadjusted leading edge registration. Run maintenance mode U034 to readjust the leading edge
registration (see page 1-3-24).
Copy example Causes Check procedures/corrective measures
Paper feed clutch 1/2, paper convey-
ing clutch, MP paper feed clutch, MP
paper conveying clutch or registration
clutch installed or operating incor-
rectly.
Check the installation position and operation of paper feed
clutch 1/2, paper conveying clutch, MP paper feed clutch, MP
paper conveying clutch and registration clutch. If any of them
operates incorrectly, replace it.