Brother MFC-8480DN User Manual page 159

Error Message Cause
The paper in the tray is not the
Size mismatch
correct size.
If the LCD shows Toner Low,
Toner Low
you can still print; however, the
machine is telling you that the
toner cartridge is near the end
of its life.
There are too many files stored
Too Many Files
on the USB Flash memory
drive.
More than one optional tray is
Too Many Trays
installed.
An incompatible or broken
Unusable Device
device has been connected to
the USB direct interface.
Troubleshooting and routine maintenance
Action
Load the correct size of paper in the tray and
set the "Paper Size" (Menu, 1, 2, 2 (See Paper
Size on page 23).
Order a new toner cartridge now.
Reduce the number of files stored on the USB
Flash memory drive.
The maximum number of optional trays is one.
Remove any additional trays.
Remove the USB Flash memory drive from the
USB direct interface. Turn the machine off and
then on again.
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