Fujitsu DL3750+/3850+ User Manual page 22

SETTING UP
Do not expose the printer to extremes of temperature and humidity.
Use only the power cord supplied with the printer or recommended by
your dealer. Do not use an extension cord.
Do not plug the printer into a power outlet that is shared with heavy
industrial equipment, such as motors, or appliances, such as copiers or
coffee makers. Such equipment often emits electrical noise or causes
power degradation.
2-2 User's Manual