A look at the operation panel, Upper panel – Sharp FO-4400 User Manual
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Display
This displays messages and prompts to help you operate the machine.
ALARM indicator
This blinks when one of the paper sources is empty or the drum cartridge is
near the end of its life (printing is still possible). This lights steadily when the
drum cartridge has reached the end of its life, all paper sources are empty, the
print compartment cover is open, or a paper jam has occurred (printing is not
possible). A message will appear in the display to indicate the problem.
TONER indicator
This blinks when the toner cartridge nears empty, and lights steadily when the
toner cartridge needs replacement.
LINE IN USE light
This lights when the fax machine is using the telephone line.
CONTRAST key
Press this key to adjust the contrast before sending or copying a document.
RESOLUTION key
Press this key to adjust the resolution before sending or copying a document.
An indicator will light next to the selected setting (HALFTONE, STANDARD,
FINE or SUPER FINE).
A Look at the Operation Panel
Upper panel
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PLAIN PAPER LASER FACSIMILE
HALF TONE
Toner Cartridge
Drum Cartridge
Paper Supply
Paper Jam
Paper Size Error
Printer Cover Open
Out Put Tray Error
ALARM Guide
ALARM
TONER
LINE IN USE
CONTRAST
RESOLUTION
STANDARD
FINE
SUPER FINE
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