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Care and Maintenance
172
Trouble
Dark and wavy vertical
streaks appear in all
colors.
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.)
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.
Either the image
processor board or
engine control board
is not functioning
properly.
Corrective Action
Replace the color
imaging unit.
Reinsert the color
imaging unit to correct
the contact for the
main charge grid.
Replace the color
imaging unit.
Replace the transfer
unit.
Turn the printer off
and back on again. If
the problem persists,
call for service on
your printer.
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