IBM PCjr Manual page 6

IV
If this equipment does cause interference to radio or
television 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 side option mounting screws,
attachment connector screws, and ground wires are
tightly secured.
• If peripherals not offered by IBM are used with this
equipment, it is suggested that you use shielded,
grounded cables with in-line filters, if necessary.
If necessary, consiilt yom: 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 UL listed and
CSA-certified plug for the user's safety. It is to be
used in conjimction with a properly grounded 115
Vac receptacle to avoid electrical shock.