The equipment described in this manual
generates and uses radio-frequency energy. If it is not installed
and used properly, that is, in strict accordance with our instructions,
it may cause interference with radio and television reception.
This equipment has been tested and complies
with the limits for a Class B computing device in accordance
with the specifications in Subpart J, Part 15, of FCC rules.
These rules are designed to provide reasonable protection against
such interference in a residential installation. However, there
is no guarantee that the interference will not occur in a particular
installation, especially if you use a "rabbit ear"
television antenna. (A "rabbit ear" antenna is the
telescoping-rod type usually contained on TV receivers.)
You can determine whether your computer
is causing interference by turning it off. If the interference
stops, it was probably caused by the computer or its peripheral
devices. To further isolate the problem:
- Disconnect the peripheral devices and
their input/output cables one at a time. If the interference
stops, it is caused by either the peripheral device or its I/O
cable. These devices usually require shielded I/O cables. For
Apple peripheral devices, you can obtain the proper shielded
cable from your dealer. For non-Apple peripheral devices, contact
the manufacturer or dealer for assistance.
If your computer does cause interference
to radio or television reception, you can try to correct the
interference by using one or more of the following measures:
- Turn the TV or radio antenna until the
- Move the computer to one side or the other
of the TV or radio.
- Move the computer farther away from the
TV or radio.
- Plug the computer into an outlet that
is on a different circuit than the TV or radio. (That is, make
certain the computer and the radio or television set are on circuits
controlled by different circuit breakers or fuses.)
- Consider installing a rooftop television
antenna with coaxial cable lead-in between the antenna and TV.
If necessary, you should consult your dealer
or an experienced radio/television technician for additional
suggestions. You may find helpful the following booklet, prepared
by the Federal Communications Commission:
"How to Identify and Resolve Radio-TV Interference Problems"
This booklet is available from the US Government Printing Office,
Washington, DC 20402, stock number 004-000-00345-4.