Troubleshooting
87
Rename the File There is already a file on the USB
Flash memory drive with the
same name as the file you are
trying to save.
Change the name of the file on the USB
Flash memory drive or the file you are trying
to save.
Replace Parts
Belt Unit
It is time to replace the belt unit. Replace the belt unit. (See Replacing the
belt unit on page 50.)
Replace Parts
Drum Unit
It is time to replace the drum unit. Replace the drum unit.
(See Replacing the drum unit on page 45.)
The drum unit counter was not
reset when a new drum was
installed.
Reset the drum unit counter.
(See Resetting the drum counter
on page 50.)
Replace Parts
Fuser Unit
It is time to replace the fuser unit. Call your Brother dealer or a Brother
Authorized Service Center to replace the
fuser unit.
Replace Parts
PF Kit 1
PF Kit 2
PF Kit MP
It is time to replace the paper
feeding kit.
Call your Brother dealer or a Brother
Authorized Service Center to replace the
PF Kit.
Replace Parts
WT Box End Soon
The waste toner box is near the
end of its life.
Buy a new waste toner box before you get a
Replace WT Box message.
Replace Toner The toner cartridge is at the end
of its life.
Replace the toner cartridge for the colour
indicated on the LCD. (See Replacing a
Toner cartridge on page 38.)
Replace WT Box It is time to replace the waste
toner box.
Replace the waste toner box. (See
Replacing the waste toner box on page 56.)
Scan Unable XX The machine has a mechanical
problem.
Turn off the machine and then turn it on
again.
If the problem continues, call your
Brother dealer.
Document is too long for duplex
scanning.
Press Stop/Exit. Use the suitable size of
paper for duplex scanning. (See Document
Size on page 147.)
Short paper The length of the paper in the tray
is too short for the machine to
deliver it to the face-down output
tray.
Open the back cover (face-up output tray) to
let the printed paper out on the face-up
output tray. Remove the printed pages and
then press Mono Start or Colour Start.
Size Error DX The paper size defined in the
printer driver is not usable for the
automatic duplex printing.
Press Mono Start or Colour Start
. Choose
a paper size which is supported by the
duplex tray. (See Print media on page 148.)
Size mismatch The paper in the tray is not the
correct size.
Load the correct size of paper in the tray and
set the “Paper Size” (MENU,
General Setup, Tray Setting). (See
Paper Size and Type on page 18.)
Error Message Cause Action
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