Oki MC561MFP User Manual page 197

Please check Belt Unit: 330
Problem
The belt unit is not properly installed.
Solution
Reinstall it properly. See page 223.
Fuser Unit Near Life.
Problem
The fuser will need to be replaced soon.
Solution
Make sure you have a replacement fuser on hand.
Please change Fuser Unit.
Problem
The fuser needs to be replaced.
Solution
Replace the fuser unit. See page 231.
Note
If the machine is in the middle of a print job, it will temporarily
stop printing the job until the fuser is replaced.
Please check Fuser Unit: %ERRCODE%
Problem
The fuser unit is not properly installed.
Solution
Reinstall it properly. See page 231.
197
Troubleshooting
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MC361/MC561 Basic User's Guide