Lexmark 4I3 - Manual (Page 15)

Safety Information
The construction of this machine provides extra protection against
the risk of electric shock by grounding appropriate metal parts. The
extra protection may not function unless the power cord is connected
to a properly grounded outlet. This machine has a grounding-type
(3-wire) power cord because grounding is necessary. It is the
responsibility of the customer or the person installing the machine to
connect it to a properly grounded outlet. Seek professional
assistance before using an adapter or extension cord; such a device
could interrupt the grounding circuit.
If this machine is connected to an outlet that has been
incorrectly connected to the building wiring, serious electric
shock could result.
For continued protection against the risk of electric shock and
personal injury:
Connect the machine only to a properly grounded outlet of the
correct voltage. The voltage your machine will accept is
indicated on the machine.
Make sure the machine is turned Off (O) before you connect or
disconnect the power cord or other cables.
If the machine has cables other than the power cord, you must
connect them before you plug the power cord into an outlet. You
must first unplug the power cord from the outlet when you
remove the other cables.
Do not use the machine in an area where it can become wet.
Keep hair and personal articles away from moving parts in the
machine to avoid the possibility of getting them caught.
Refer service or repairs to qualified personnel.
There may be some increased risks of electric shock and
personal injury during disassembly and servicing of this machine.
Professional service personnel should understand this and take
necessary precautions.
Copyright IBM Corp. 1991, 1994 xiii