Brother MFC-8520DN User Manual page 99

Error Message
Cover is Open
DIMM Error
Disconnected
Document Jam
Drum Error
Drum Stop
Cause
The front cover is not
completely closed.
The ADF cover is not
completely closed.
The ADF is open while loading
a document.
The fuser cover is not
completely closed or paper
was jammed in the back of the
machine when you turned on
the power.
 The DIMM is not installed
correctly.
 The DIMM is broken.
 The DIMM does not meet
the required specifications.
The other person or other
person's fax machine stopped
the call.
The document was not
inserted or fed correctly, or the
document scanned from the
ADF was too long.
The corona wire on the drum
unit needs to be cleaned.
The toner cartridge is placed in
the machine without the drum
unit.
It is time to replace the drum
unit.
Action
Close the front cover of the machine.
Close the ADF cover of the machine.
Close the ADF cover of the machine, then
press Stop/Exit.
 Close the fuser cover of the machine.
 Make sure paper is not jammed behind the
fuser cover at the back of the machine, then
close the fuser cover and press Start.
(See Paper is jammed at the back of the
machine uu page 102.)
 Turn off the machine and remove the
DIMM.
(uu Advanced User's Guide: Installing
extra memory)
 Confirm the DIMM meets the required
specifications.
(uu Advanced User's Guide: Memory
board)
 Re-install the DIMM correctly. Wait a few
seconds, and then turn it on again.
 If this error message appears again,
replace the DIMM with a new one.
(uu Advanced User's Guide: Installing
extra memory)
Try to send or receive again.
See Document is jammed in the top of the ADF
unit uu page 98 or Using the automatic
document feeder (ADF) uu page 24.
Clean the corona wire on the drum unit.
(See Cleaning the corona wire uu page 80.)
Put the toner cartridge into the drum unit, and
then re-install the drum unit and toner cartridge
assembly in the machine.
Replace the drum unit.
(See Replacing the drum unit uu page 73.)
Troubleshooting
B
91