IBM PCjr

I
You are now ready to proceed with the advanced tests.
If you do not know what area of the IBM PCy>may be
failing, you have an undetermined problem.
If a failure occurs only occasionally, you have an
intermittent problem.
DO YOU HAVE AN UNDETERMINED OR
INTERMITTENT PROBLEM?
NO Go to the PIC for the area you want to test.
(See the Contents page at the beginning of
Section 3 for the PIC locations).
Go to the PIC "Undetermined Problem" on
page 3-010-1.
Start 3-000-5