Brother MFC-9560CDW Basic User's Manual page 119

Error Message
Too Many Files
Unusable Device
WT Box End Soon
Cause
There are too many files stored
on the USB Flash memory drive.
An incompatible or defective
device has been connected to the
USB direct interface.
The waste toner box is near the
end of its life.
Action
Reduce the number of files stored on the
USB Flash memory drive.
Remove the USB Flash memory drive from
the USB direct interface.
Buy a new waste toner box before you get a
Replace WT Box message.
Troubleshooting
B
103