General Problems - Sharp UX-A450 Operation Manual

Problems and Solutions
Reception/copying is
interrupted.
Dark vertical lines appear
on copies and received
faxes.

General problems

Problem
A loud howling sound
occurs when the speaker
is used.
Auto-dial numbers cannot
be stored in the fax.
Nothing appears in the
display.
The machine does not
respond when you press
any of its keys.
Automatic document
feeding does not work for
transmission or copying.
86
• If reception or copying takes place continuously for
a long time, the print head may overheat. Turn off
the power and let it cool down. If overheating
frequently occurs, try changing the print contrast
setting to LIGHT (see page 16).
• Try changing the print contrast setting to LIGHT
(see page 16).
• Feedback (a loud howling sound) may occur if you
replace the handset while the speaker is on. To
avoid feedback, turn off the speaker (press
before you replace the handset.
• Make sure the fax is plugged in and the imaging
film has been loaded. (Auto-dial numbers cannot
be stored if the imaging film has not been loaded.)
See Loading the Imaging Film on page 13.
• 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.
• If a beep sound is not made when you press the
keys, unplug the power cord and then plug it in
again several seconds later.
• Check the size and weight of the document (see
Transmittable Documents on page 43).
Solution
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