Troubleshooting
11-20
Message Description Action
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.
UNKNOWN USB DEVICE A USB device which is not
supported (e.g., USB mouse,
USB keyboard) is connected to
the USB memory.
Do not connect anything other
than a USB memory.
USB MEMORY FULL The USB memory is full of data
or the number of file limit has
reached.
Get enough space in the USB
memory or organize your
destination folder from your
computer.
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