Brother DCP-8085DN User Manual page 85

Error Message
Toner Low
Too Many Files
Too Many Trays
Unusable Device
78
Cause
If the LCD shows Toner Low,
you can still print; however, the
machine is telling you that the
toner cartridge is near the end of
its life and the toner will soon
need replacing.
There are too many files stored
on the USB Flash memory drive.
More than one optional tray is
installed.
An incompatible or broken device
has been connected to the USB
direct interface.
Action
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.