Sharp FO-4400 - Manual (Page 123)

Problems and Solutions
121
9. T
roub
le
-
s
hooti
n
g
The quality of copies is
poor and/or black lines
appear. • Any dirt or material on the scanning glass will
cause lines to appear on copies and transmitted
faxes. Clean the scanning glass as explained in
Chapter 8.
Dots appear at regular
intervals on received
documents and copies. • The drum cartridge may be damaged. Replace the
drum cartridge.
The printing paper comes
out blank when you try to
receive a document. • Make sure that the document is loaded properly in
the feeder of the transmitting machine. Make a
copy or print a report to confirm the printing ability
of your machine.
General problems
Problem Solution
Nothing appears in the
display. • Make sure the power cord is properly plugged into
a power outlet and the power switch is turned on.
• 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, turn off the power switch and then turn it on
again several seconds later.
Automatic document
feeding does not work for
transmission or copying. • Check the size and weight of the document (see
Transmittable Documents in Chapter 2).
No reception occurs when
polling is attempted. • 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.