IBM Personal Computer XT Manual To Operations page 6

If this equipment does cause interference to radio or
TV reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
• Reorient the receiving antenna.
• Relocate the equipment with respect to the receiver.
• Move the equipment away from the receiver.
• Plug the equipment into a different outlet so that
equipment and receiver are on different branch
circuits.
• Ensure that card mounting screws, attachment
connector screws, and ground wires are tightly
secured.
• Ensure that card slot covers are in place when no
card is installed.
• If peripherals not offered by IBM are used with this
equipment, it is suggested to use shielded, grounded
cables, with in-line filters if necessary.
If necessary, consult your dealer service representative
for additional suggestions.
The manufacturer is not responsible for any radio or
TV interference caused by unauthorized modifications
to this equipment. It is the responsibility of the user to
correct such interference.
CAUTION
This product is equipped with a line cord and plug
for the user's safety. It is to be used in conjuction
with a properly grounded receptacle to avoid
electrical shock.
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