Olivetti d-Copia 3000MF Operation Manual page 90

Basic Operation
3
Make sure that the indicators are off.
IMPORTANT: Do not turn the main power switch off when the optional fax
kit is installed. If you turn the main power switch off, you cannot receive fax
messages.
In case of not using the machine for a extended period of time
If the machine will not be used for an extended period of time
CAUTION:
(vacations, etc.), remove the power plug from the outlet for safety purposes
and remove paper from the cassettes and seal it in the paper storage bag
to protect it from humidity.
OPERATION GUIDE 3-3