IBM PCjr

10 If you are using a display without an
external sound system, Parts 2
through 6 of the Sound Test will not
be heard. If you want to hear parts 2
through 6 of the Sound Test, you will
have to connect an external sound
system to the rear of your IBM
PC/r.You can use your IBM PC/r
with a display without an external
sound system connected. Go to Step
13.
11 Connect your external sound system
to another sound output device to
determine if it is working properly.
Is
your external sound system
working properly?
YES - Have your IBM PCyr
serviced. See "Service
Information" in this
section.
NO - Connect a working external
sound system to your IBM
PCyr and return to
"Running the IBM PCyr
Tests" in this section, and
select this test again.
6-100 Sound Test