Kyocera KM-C2520 Service Manual page 212

2FZ/2F0/2HC-5
(6) Paper jams.
Copy example
Foreign matter in the developing unit.
Dirty transfer belt.
Dirty transfer roller.
Dirty shading plate.
Dirty scanner mirror.
Dirty LSU slit glasses.
Dirty contact glass.
(7) Toner drops on the paper conveying path.
Copy example
Dirty contact glass.
Dirty slit glass.
Dirty or flawed drum.
Deformed or worn cleaning blade of
the drum unit.
Dirty scanner mirror.
Dirty lens of image scanner unit.
Worn transfer belt.
Defective transfer roller.
(8) Abnormal noise is heard.
Copy example
Flawed drum.
Dirty developing section.
Leaking separation electrode.
Poor contact of grounding terminal of
drum unit.
1-4-52
Causes
Causes
Causes
Check procedures/corrective measures
Run maintenance mode U089 to output four-color bar PG,
check the output status of the four colors, and replace the
developing unit for any faulty color (see page 1-3-29 and
page 1-5-26).
Clean the transfer belt. Replace the transfer belt unit if it is
extremely dirty (see page 1-5-28).
Clean the transfer roller. Replace the transfer roller if it is
extremely dirty (see page 1-5-29).
Clean the shading plate.
Clean the scanner mirror.
Perform the laser scanner cleaning (see page 1-3-118).
Clean the contact glass.
Check procedures/corrective measures
Clean the contact glass.
Clean the slit glass.
Perform the drum refresh operation (see page 1-3-118).
If the drum is flawed, replace the drum unit (see page 1-5-
27).
Replace the drum unit (see page 1-5-27).
Clean the scanner mirror.
Clean lens of image scanner unit.
Replace the transfer belt unit (see page 1-5-28).
Replace the transfer roller (see page 1-5-29).
Check procedures/corrective measures
Replace the drum unit (see page 1-5-27).
Clean any part contaminated with toner or carrier in the
developing section.
Clean the separation electrode.
Check the mounting state of the image formation holder. If
any problem is found, repair it (see page 1-5-25).