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Problems and Solutions
149
10. Trouble-
shooting
General problems
Problem Solution
Nothing appears in the
display.
• Make sure the power cord is properly plugged into a
power outlet.
• Connect another electrical appliance to the outlet to
see if it has power.
The machine does not
respond when you press
any of its keys.
• If a beep sound is not made when you press the keys,
unplug the power cord, wait at least 5 seconds, and
then plug it in again.
Automatic document
feeding does not work .
• Check the size and weight of the document (see page
65).
Dots appear at regular
intervals on printed output.
• The drum cartridge may be damaged. Replace the
drum cartridge.
The machine makes an
abnormal grating sound
when the power cord is
plugged in.
• Unplug the power cord immediately and make sure
that the scanner lock has been released (see page
15).
Characters or parts of the
image are missing from
printed output.
• Remove the drum cartridge as explained on page 143
and wipe the surface of the drum (the green cylinder)
with a dry cotton swab. If print quality does not
improve after wiping with a dry cotton swab, you can
try moistening the swab with isopropyl alcohol or
ethanol. However, do not moisten the swab with
isopropyl alcohol or ethanol unless absolutely
necessary, as this may cause stains or smears to
appear on the first pages printed after cleaning and
the stains may never completely disappear.
The paper plate is up,
preventing paper from
being loaded in the paper
tray.
• Remove any paper that remains in the paper tray and
then replace and remove the output tray. This should
cause the paper plate to go down and allow paper to
be loaded.