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108
Cooling Down
Wait for a while
The temperature of the drum unit
or toner cartridge is too hot. The
machine 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 LCD shows
Cooling Down, and
Wait for a while.
Make sure that you can hear the fan in the
machine spinning and that the exhaust outlet
is not blocked by something.
If the fan is spinning, remove any obstacles
that surround the exhaust outlet, and then
leave the machine turned on but do not use
it for several minutes.
If the fan is not spinning do one of the
following:
(MFC-7440N only)
See Transferring your faxes or Fax Journal
report on page 111 before disconnecting the
machine so you will not lose any important
messages.
Then, disconnect the machine from the
power for several minutes and then
reconnect it.
(MFC-7840W only)
Disconnect the machine from the power for
several minutes, then reconnect it. (The
machine can be turned off for approximately
4 days without losing faxes stored in the
memory. See Transferring your faxes or Fax
Journal report on page 111.
Cover is Open The front cover is not closed
completely.
Close the front cover of the machine.
Cover is Open The fuser cover is not closed
completely.
Close the fuser cover of the machine.
Cover is Open The fuser cover is not closed
completely or paper was jammed
in the back of the machine when
you turned on the power.
Make sure paper is not jammed inside the
back of the machine, and then close the
fuser cover and press Start.
Disconnected The other person or other
person’s fax machine stopped the
call.
Try to send or receive again.
Document Jam The document was not inserted
or fed properly, or the document
scanned from the ADF was too
long.
See Document jams on page 113 or Using
the automatic document feeder (ADF)
on page 18.
DR Mode in Use The machine is set to Distinctive
Ring mode. You cannot change
the Receive Mode from Manual to
another mode.
Set Distinctive Ring to Off. (See Turning off
distinctive ring on page 46.)
Drum Error The corona wire on the drum unit
needs to be cleaned.
Clean the corona wire on the drum unit. (See
Cleaning the corona wire on page 122.)
The drum unit has reached the
end of its life.
Replace the drum unit. (See Replacing the
drum unit on page 130.)
Error Message Cause Action