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Troubleshooting
Display Messages
Message Description Action
START AGAIN A transmission error has occurred because
the line condition was poor.
Check the line condition, then try again.
STOP KEY PRESSED
PRESS OK KEY
[Stop/Reset] has been pressed while
scanning the document using the ADF.
Press [OK], then set the document again.
SYSTEM ERROR Some kind of error has occurred in the
machine.
Turn OFF the main power switch, wait for
more than 10 seconds, then turn it ON again.
If the message persists, turn OFF the main
power switch, disconnect the power cord,
and contact Canon Customer Care Center.
TONER COVER OPEN
CLOSE COVER
A cover is open. Check the cover, and make sure that it is
completely closed.
TONER LOW
PREPARE NEW TONER
The toner is running low. Prepare a new toner cartridge.