Oki PRINTER MPS420B - Manual (Page 55)

Consumables and Maintenance > 55
2. Insert a sheet of Letter/A4 plain paper between the paper guides and push the
colored set button to engage the tray.
3. Press the Up or down arrow button repeatedly until MAINTENANCE MENU displays,
then press the Enter button.
4. Press the Up or down arrow button until CLEANING PRINT is displayed.
5. Press the Enter button.
6. The printer grips the paper and prints a cleaning page. The printer should now be
ON LINE
.
7. If subsequent printing appears faded or uneven, try replacing the toner
cartridge.