Sharp SF-2540 Operation Manual page 39

Problem
Paper misfeeds frequently.
Dust, dirt, smudges
appear on copies.
Message display is too
dark or too light.
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Non-standard paper used?
Is paper properly installed?
Pieces of paper inside copier?
Paper curled or damp?
Document glass or document
cover dirty?
Is LCD contrast control 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 copy quantity display.
Example
Should the copier stop completely, and an alphanumeric code and
the message "CALL FOR SERVICE. CODE: L4–
contact your authorised Sharp Service Centre.
KEY OPERATOR
TROUBLESHOOTING
Solution
Use standard paper.
If using special papers, feed the paper
through the manual feed tray.
See pages 10 and 24.
Remove all pieces of misfed paper.
See page 30.
Store copy paper flat in the wrapper in
a dry location.
See page 29.
Clean regularly. See page 42.
Adjust the LCD contrast control.
See page 41.
See page 98.
" appear,
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