Oce VarioLink 2221 User Manual page 127

Control Panel Settings
Reminder
After the machine is turned off, then on again with the main power switch
after the encryption key is canceled, be sure to format the hard disk.
When turning the machine off, then on again with the main power switch,
wait about 10 seconds to turn the machine on after turning it off. The
machine may not operate correctly if it is turned on immediately after
being turned off.
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