Brother MFC4550 PLUS - Manual (Page 170)

Error Messages
Occasionally, you may have a problem with yoxir MFC or telephone line. If this
happens, your MFC usually identifies the problem and displays an error message.
Refer to the following list when you sec an error message on the display.
Error messages are listed below in alphabetical order.
B
BUFFER ERROR
c
CHANGE DRUM
This means an overflow of the input data
buffer. Press FF/Cont. Data that overflowed
the buffer will not be printed.
Check the commimication parameter settings
such as handshake protocol on both your
computer and MFC.
If the error occurs again, the interface
hardware may be damaged, so consult with
your dealer.
You can clear a print quality problem by
replacing the drum unit with a new one if the
display shows CHANGE DRUM. The drum
unit is at the end of its life.
CHANGE TONER
CHANGE TONER
C
TONER EMPTY
3
If the display shows CHANGE TONER and
at the same time the Toner Empty LED on the
control panel flashes on and off, you can still
print. But the toner is depleted and it is telling
you that the toner will soon run out. Order a
new toner cartridge now.
The toner is used up and printingis not possible.
Replace the toner cartridge with a new one.
(See pages 133-136)
CHECK PAPER
CHECK PAPER SIZE
The MFC is out of paper or the paper is not
properly loaded in the multi-purpose sheet
feeder. Refill the paper or remove the paper
and load it again.
Your Paper Size setting may not be set correctly
for the paper you are using (see page 66).
When you see this error, the reduction ratio
automatically will be changed to AUTO if you
have used a fixed reduction ratio (see pages
67-68),
158