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DIMM Error (HL-5450DN(T) only)
The DIMM (Dual In-Line Memory Module) is not installed correctly. Or the DIMM
is broken or does not meet the required specifications.
Turn off the machine and remove the DIMM.
(See Installing extra memory uu page 92.)
Confirm that the DIMM meets the required specifications.
(For details, see SO-DIMM types uu page 91.)
Re-install the DIMM correctly. Wait a few seconds, and then turn the machine
on again.
If this indication continues, replace the DIMM with a new one.
(See Installing extra memory uu page 92.)
Main PCB Failure
Turn off the power switch, and then turn it back on and try to print again.
If the error occurs again, call your dealer or Brother Customer Service.
Cover is Open
Close the fuser cover located behind the back cover of the machine.
Duplex Disabled
Put the duplex tray in the machine and close the back cover.
LEDs Machine Status