Brother DCP-9270CDN Basic User's Manual page 113

Error Message
Cooling Down
Wait for a while
Cover is Open.
Cover is Open
Cover is Open
DIMM Error
Document Jam
Drum Error
Drum Stop
Duplex Disabled
Close the Back
Cover of the
machine.
84
Cause
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.
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 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.
It is time to replace the drum unit. Replace the drum unit. (See Replacing the
The back of the machine is not
closed completely.
Action
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, disconnect the
machine from the power for several minutes,
then reconnect it.
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 inside
the back of the machine, and then close
the fuser cover and press Mono Start or
Colour Start.
 Turn off the machine and remove the
DIMM.
 Confirm the DIMM meets the required
specifications. (See Memory board in
Appendix B of the Advanced User's
Guide.)
 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. (See
Installing extra memory in Appendix B of
the Advanced User's Guide.)
See Document jams on page 89 or Using
the automatic document feeder (ADF)
on page 25.
Clean the corona wire on the drum unit.
(See Cleaning the corona wires
on page 69.)
drum unit on page 45.)
Close the back cover of the machine.