Brother MFC-L6750DW, Online User'S Manual, Page: 527 / 703

Error Message Cause Action
Scan Unable
## The machine has a mechanical
problem.
• Press and hold to turn off the machine,
and then turn it on again.
• If the problem continues, contact Brother
Customer Service.
Contact Brother Customer Service at:
1-877-BROTHER (1-877-276-8437)
(in USA)
www.brother.ca/support (in Canada)
or to locate a Brother Authorized Service
Center, visit:
http://www.brother-usa.com/service
Self-Diagnostic The temperature of the fuser
unit does not rise to a specified
temperature within the specified
time.
Press and hold to turn off the machine, wait a
few seconds, and then turn it on again. Leave the
machine idle for 15 minutes with the power on.
The fuser unit is too hot.
Service Error
## Machine's firmware has a
problem. • Contact Brother Customer Service.
Contact Brother Customer Service at:
1-877-BROTHER (1-877-276-8437)
(in USA)
www.brother.ca/support (in Canada)
or to locate a Brother Authorized Service
Center, visit:
http://www.brother-usa.com/service
Size Error The paper size defined in the
printer driver is not supported
by the defined tray. Choose a paper size supported by the defined
tray.
Size Error 2-sided The paper size specified in the
machine's paper size setting is
not available for automatic 2-
sided printing.
Press (if required).
Load the correct size of paper in the tray and set
the tray for that paper size.
Choose a paper size supported by 2-sided
printing.
Paper sizes available for automatic 2-sided
printing are Letter, Legal, Mexico Legal, India
Legal and Folio.
The paper in the tray is not the
correct size and is not available
for automatic 2-sided printing.
Size Mismatch The paper in the tray is not the
correct size. Load the correct size of paper in the tray
indicated on the LCD and set the size of paper for
the tray.
Supplies
Drum End Soon The drum unit is near the end of
its life. Order a new drum unit before the LCD displays
Replace Drum
.
Supplies
Prepare New Toner
Cartridge. If the LCD displays this
message, you can still print.
The toner cartridge is near the
end of its life. Order a new toner cartridge now so a
replacement toner cartridge is available when the
LCD displays
Replace Toner
.
Supplies
Replace Drum It is time to replace the drum
unit. Replace the drum unit with a new one.
The drum unit counter was not
reset when a new drum was
installed. Reset the drum unit counter.
See the instructions included with the new drum
unit.
Too Many Trays The number of installed
Optional Trays exceeds the
maximum number. Reduce the number of Optional Trays.
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