Sharp AR-280 Operation Manual page 100

TROUBLESHOOTING
Problem
Paper misfeeds frequently.
Dust, dirt, smudges appear
on copies.
Touch panel is too dark or
too light.
5-14
Non-standard paper used?
Is paper properly installed?
Pieces of paper inside copier?
Paper curled or damp?
Document glass, document cover
(AR-280) or RADF transport belt
(AR-285/AR-335) dirty?
Is LCD contrast properly
adjusted?
If a problem persists after checking the above, please consult your key
operator prior to contacting your authorised Sharp Service Centre.
Self-diagnostic function
An automatic self-diagnostic function is built into this copier. Should
the copier malfunction, the self-diagnostic function will locate the
problem and stop the copier to prevent damage. An alphanumeric
code will appear in the message display.
Example
Should the copier stop completely, and the message "CALL FOR
SERVICE. CODE:
authorised Sharp Service Centre.
KEY OPERATOR
Solution
Use standard paper.
If using special papers, feed the paper
through the bypass tray.
See pages 2-14 and 4-2.
Remove all pieces of misfed paper.
See page 5-2.
Store copy paper flat in the wrapper in
a dry location. See page 4-8.
Clean regularly. See page 6-6.
Adjust the LCD contrast.
See page 6-7.
" appear in the message display, contact your
See page 8-28.