IBM RT PC 10 Hardware Maintenance And Service page 32

Number Test description
99 Indicates testing was stopped because the keylock is in the
Locked position.
10 Tests the interval timer on the system board.
11 Tests the interrupt controller on the system board.
12 Tests the direct memory access controller on the system board.
14 Tests the fixed-disk drive adapter.
15 Tests the fixed-disk drive adapter.
16 Tests the diskette drive adapter.
17 Tests the diskette drive adapter.
Beep Tests the speaker in the keyboard.
20 Tests the battery-powered memory on the system board.
21 An attempt is being made to do an IPL, using the devices
specified in the battery-powered memory.
22
An attempt is being made to do an IPL, using the default
devices specified in the ROM on the processor board.
23 None of the IPL devices specified in the battery-powered
memory or the ROM default list could be identified.
25 An error occurred during IPL. The system unit must be
powered off to clear this error.
26 An IPL operation is in progress.
27 The memory capacity was exceeded during IPL.
29 The IPL operation is beginning.
30 - 87 Individual adapter or device tests. Use Section 3 to isolate the
failure.
89 A machine or program check was detected.
Blank
This is the normal condition after the POST programs complete.
Diagnostics
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