Brother MFC 7550MC - Manual (Page 208)

TROUBLESHOOTING PROCEDURES
16-3
MFC 4550/6550MC/7550MC
OP-US-5.0
A poor quality phone line caused a
communications error. Try the call again.
You requested the polling function even though
the machine you called does not have the
polling feature.
When the temperature of the drum unit or
toner
cartridge becomes too hot, the MFC will
pause its current print job and go into cooling
down mode. During the cooling down mode
you
will hear the cooling fan running while the
display on the MFC shows COOLING DOWN
and PLEASE WAIT. You must wait and allow
the MFC to resume printing when it is ready.
The top cover or multipurpose sheet feeder
cover was not completely closed. Please check
each of them.
The telephone line was disconnected by the
other party during the communication. Try
calling the other party to see what happened.
Your documents were not inserted properly,
or the documents were not fed properly, or the
documents were too long.
Open the control panel and remove the
documents. (See page 14-6~8) Then close the
control panel, press Stop and insert the
documents again, adjusting the guides on either
side of the document, and try sending the fax
again.
Original documents should be straight, non-
wrinkled, to be correctly fed. Otherwise, the
documents may occasionally jam.
The download buffer is full. Press FF/Cont.
Printing will resume (the downloading is
cancelled). The command that caused this
message will be ignored. (Only for MFC
6550MC/7550MC)
There is a communications error.
If you are using a serial interface, check baud
rate, parity, etc. If you are using a parallel
interface, check the cable connections.
COOLING DOWN
PLEASE WAIT
COVER OPEN
D I S C O N N E C T E D
D
LINE ERROR
L
DOCUMENT JAM
D O W N L O A D F U L L
C O N N E C T I O N F A I L
C O M M . E R R O R