Sharp FO-90 Operation Manual page 118

all-fo90A.book Page 116 Monday, December 20, 1999 1:27 PM
Problems and Solutions
The quality of copies is
poor and/or black spots
appear.
Reception/copying is
interrupted.
General problems
Problem
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.
Voice calls taken on an
extension phone are
interrupted by the fax.
No reception occurs when
polling is attempted.
116
• Any dirt or material on the scanning glass will
cause spots to appear on copies and transmitted
faxes. Clean the scanning glass as explained in
Chapter 9.
• 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.
Solution
• 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 in Chapter 3).
• The fax may interrupt during a voice call if the
reception mode is set to A.M. To prevent
interruption on a tone dial extension phone, press
any three keys on the extension phone after
answering. (Note: Do not enter the code to activate
fax reception.)
• Make sure you have not run out of paper.
• Make sure the transmitting machine is in automatic
reception mode.
• If the transmitting machine has polling security,
make sure that your fax number has been entered
both in your machine and in the transmitting
machine.