Canon imageCLASS MF4690 imageCLASS MF4690 Basic Operation Guide - Page 243

Message, Description, Action, SYSTEM ERROR, TONER COVER OPEN, CLOSE COVER, TONER LOW

Page 243 highlights

Message SYSTEM ERROR TONER COVER OPEN CLOSE COVER TONER LOW PREPARE NEW TONER UNKNOWN USB DEVICE USB MEMORY FULL Description Some kind of error has occurred in the machine. A cover is open. The toner is running low. Action 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. Check the cover, and make sure that it is completely closed. Prepare a new toner cartridge. A USB device which is not supported (e.g., USB mouse, USB keyboard) is connected to the USB memory. The USB memory is full of data or the number of file limit has reached. Do not connect anything other than a USB memory. Get enough space in the USB memory or organize your destination folder from your computer. Troubleshooting 11-20

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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.