Oki MC573dn - If the Error Code Is 390

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9. Troubleshooting
1
If documents are set in the ADF or on the document glass, remove them.
2
If paper is loaded on the MP tray, remove the paper.
3
Hold the handle (B) and open the scanner unit (a) completely.
4
Press the button (A) and open the output tray (b) completely.
5
Remove the four image drums from the machine and place the image drums
on a flat surface.
If the Error Code is "390"
Burns may result.
The fuser unit is extremely hot. Do not touch it.