Brother MFC-9840CDW User Manual page 147

Error Message Cause
Registration failed.
Registration
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.
The machine has a mechanical
Scan Unable XX
problem.
Document is too long for duplex
scanning.
The scanner lock is locked.
Scanner Locked
The drum unit and toner
Toner Life End
cartridges assembly is not
Replace Black(K)
installed properly, or one or more
1
Toner Cartridge.
of the toner cartridges are used
up and printing is not possible.
1
The toner
cartridge colour
which is used up is
shown in the
message.
Troubleshooting and routine maintenance
Action
Press Mono Start or Colour Start and try
again.
Do one of the following:
Try Manual Registration, Menu, 4, 8.
(See Manual Registration in the Software
User's Guide on the CD-ROM.)
Put in a new belt unit. (See Replacing the
belt unit on page 181.)
Put in a new drum unit. (See Cleaning the
drum unit on page 159.)
Replace the empty toner cartridge with a
new one. (See Replacing a toner
cartridge on page 169.)
Turn off the machine's power switch. Wait a
few seconds, then turn it on again.
If the problem continues, call your Brother
dealer.
Change the file name of the file on the USB flash
memory drive or the file you are trying to save.
Turn off the machine's power switch and then
turn it on again. If the error message continues
leave the machine for several minutes before
you try it again. The machine can be turned off
for up to 60 hours without losing faxes stored in
the memory. (See Checking if the machine has
faxes in its memory on page 137.)
Press Stop/Exit. Use a suitable size of paper for
duplex scanning. (See Scan on page 227.)
Open the document cover, and then release the
scanner lock lever.
Press Stop/Exit.
Do one of the following:
Re-install the toner cartridges and drum unit
assembly.
Replace the empty toner cartridge with a
new one. (See Replacing a toner
cartridge on page 169.)
If one of the colour toner cartridges is empty,
choose Mono in the printer driver to be able
to continue printing in monochrome.
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