Digital Equipment VAX 10000, Продвинутое устранение неисправностей, Страница: 49 / 116

System Self-Test 2-19
Processors can fail ST1, ST2, or ST3 testing. When a processor fails ST1
or ST2, subsequent ST lines will also indicate failure.
Possible Solutions
•
Reseat processors in slots 0 and 1 and repeat testing.
•
Place passing CPU in failing slot and if the passing CPU fails, you may
have a bad LSB slot. Next, take the failing CPU and try it in a slot
where a module has passed self-test. If the failing CPU now passes
self-test, avoid using the slot in which both processors failed testing.
•
Replace the failing processor with a new processor (see the System
Service Manual).
1
The ST1 line shows that each of the three CPUs passed the first
round of testing. The two memories successfully completed ST1 also.
2
ST2 is the CPU/memory test. The ST2 line shows the CPU in slot 0
failing. Consequently, the failing CPU is no longer designated as the
boot processor. The CPUs in slots 1 and 2 conduct the CPU/memory
tests. The memories in slots 6 and 7 pass ST2 testing.
3
Only the CPUs in slots 1 and 2 undergo ST3 testing; the processor in
slot 0 is not tested because of its previous failure during ST2 testing.
In the example, the CPU in slot 1 fails the third round of testing.