Error Message- Page 122

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-7340, MFC-7345N and 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