IBM 1220 User Reference page 41

Symptom
Cannot print using the infrared
port on the optional
Tri-Port Adapter (continued).
Cannot print using the LocalTalk
port.
Cause
A connection between the two
infrared devices cannot be made.
The LocalTalk port is not set up
correctly.
39
Solution
• Make sure the distance between
the two infrared ports is 3 m (10
ft) or less. If necessary, move the
ports closer together.
• Make sure no objects are
between the two ports.
• Make sure the computer is set on
a level surface.
• If necessary, turn off the lights in
the room or close window
shades or blinds. Bright light,
such as direct sunshine or
nearby artificial lights, may
interfere with communication.
• Make sure neither LocalTalk
Port nor LocalTalk Buffer
to Disabled in the LocalTalk
Menu.
• Verify that the printer is set up
correctly in the Macintosh
Chooser.
• If two Tri-Port Adapters are
installed, only one LocalTalk and
one infrared port works. The Tri-
Port Adapter installed in
connector slot 1 is active.
is set