Oki CX2731MFP Advance User Manual page 250

Code Message
Please check
%COLOR%
Toner cartridge
Please see Help
for details
540 Please check
%COLOR%
541
Toner cartridge:
542
%ERRCODE%
543
Please see Help
for details
544 Please check
%COLOR%
545
Toner cartridge:
546
%ERRCODE%
547
Please see Help
for details
Please check
Fuser Unit:
%ERRCODE%
Please see Help
for details
MC361/MC561/CX2731 MFP Advanced User's Guide
<STATUS>
key
Lights up
Blinks
Blinks
Blinks
250
– Issues: Error Messages
Cause/Remedy
Something is wrong with the
toner sensor of the indicated
color during printing.
Check and reinstall the toner
cartridge of the indicated
color properly.
Something is wrong with the
toner sensor of the indicated
color.
Check and reinstall the toner
cartridge of the indicated
color properly.
540: Y
541: M
542: C
543: K
The toner cartridge lever of
the indicated color is not
locked properly.
Check and lock the lever
properly.
544: Y
545: M
546: C
547: K
The fuser unit is not properly
installed.
Reinstall it properly.