Oki CX3641MFP Handy Reference page 49

Maintenance
Cleaning the Tray 1 Feed Rollers
1. Remove items such as wrist
watches or bracelets so they do not
catch in the mechanism.
2. If a hard disk drive is installed in
the printer, press and hold the
SHUTDOWN/RESET button on the
control panel for 3 seconds and
wait for the display to tell you it is
okay to turn off the printer.
Otherwise go to the next step.
3. Turn the printer off.
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