Kyocera TASKalfa 420i Operation Manual page 327

Symptom
Printouts are too dark.
Copies have a moire
pattern (dots grouped
together in patterns
and not aligned
uniformly).
Printouts are not
clear.
Printouts are dirty.
Printouts are fuzzy.
Images are skewed.
OPERATION GUIDE
Checkpoints
Is the machine in Auto
Density mode?
Is the machine in Manual
Density mode?
Is the original a printed
photograph?
Did you choose appropriate
image quality for the original?
Is the platen or the document
processor dirty?
Is the transfer roller dirty?
Is the drum dirty?
Is the scanner dirty?
Is the Printed Document
Guard Kit enabled?
Is the machine being used in
very humid conditions?
Are the originals placed
correctly?
Is the paper loaded
correctly?
Corrective Actions
Set the correct density level for
auto density.
Use [Image Quality] to set the
correct density level.
When changing the default density
level, adjust the density manually
and choose the desired level.
Set the image quality to [Print
Photo].
Select appropriate image quality.
Clean the platen or the document
processor.
Brush the transfer roller clean.
Carry out Drum Refresh.
Carry out Developer Refresh.
Carry out Laser Scanner Cleaning.
Disable the Printed Document
Guard Kit.
Carry out Drum Refresh.
When placing originals on the
platen, align them with the original
size indicator plates.
When placing originals in the
optional document processor, align
the original width guides securely
before placing the originals.
Check the position of the paper
width guides.
Troubleshooting
Reference
Page
—
3-8
—
3-8
9-2
9-2
9-6
8-43
8-47
8-47
Appendix-
10
9
8-43
2-32
2-32
2-33
10-3