Kyocera KM-3050 Operation Manual page 87

Basic Operation
Make sure that the indicators are off.
In case of not using the machine for an extended period of time
CAUTION:
If the machine will not be used for several (overnight, etc.),
turn the main power switch off. If it will not be used for an extended period
of time (vacations, etc.), remove the power plug from the outlet for safety
purposes.
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.
OPERATION GUIDE 3-3