Sharp FO-IS125N - Manual (Page 160)

Problems and Solutions
158
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
52).
Printed output is faint. • The toner cartridge may need replacement (see page
148).
Dots appear at regular
intervals on printed output. • The drum cartridge may be damaged. Replace the
drum cartridge (see page 150).
Characters or parts of the
image are missing from
printed output. • Remove the drum cartridge as explained on page 150
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 (the
stains may never completely disappear).