IBM 5150 Hardware Maintenance Manual page 26

1. Connect the cables to your cassette recorder.
\
2. Be sure that your cassette is rewound and the recorder is
on.
•
3. After the Basic display has appeared, press
§
(Load),
type Ideass", then press
~
(Enter).
4. Wait 15-30 seconds for "ldcass .B found" and "OK" to
appear on the screen, then press
B
(Run).
5. Wait approximately 2 minutes for the diagnostics to be
read from the cassette.
HA VE YOU COMPLETED THE STEPS LISTED ABOVE FOR
LOADING THE DIAGNOSTIC CASSETTE?
NO
Complete the steps above before continuing.
YES
Go to page 010-11.
010-9