Kyocera FS-5900C User Manual page 102

Trouble
Dark and wavy vertical
streaks appear in all
colours.
The entire page prints in
black, including the
borders.
Toner spots appear on
the back of the media.
The page prints in black
in the image area only.
(The borders are clear.)
Care and Maintenance
Possible Cause
The main charge grid is
dirty.
Bad electrical contact for the
main charge grid.
The main charge grid is
broken.
The transfer unit is worn out. Replace the transfer unit.
Either the image processor
board or engine control board
is not functioning properly.
Corrective Action
Replace the imaging unit.
Reinsert the imaging unit to
correct the contact for the
main charge grid.
Replace the imaging unit.
Turn the printer off and back
on again. If the problem
persists, call for service on
your printer.
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