Oce OP33 Reference Manual page 154

1
Call up the desired screen as follows:
(Additional Functions)
2
Select "On" or "Off," and press "OK."
3
Press "Done."
The specified mode is set and the display returns to the Basic Features screen.
4
Turn the main power switch off. Allow at least 3 seconds, before
turning the main power switch back on.
Exposure
Adjusting the Machine (Adjustment/Cleaning)
3
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