System Self-Test
2-27
When self-test passes, the processor’s LEDs are set as shown in Figure 2-6.
The two LEDs closest to the self-test LED are on if the KA7AA is the boot
processor; the LED closest to the self-test LED is on if the KA7AA is a sec-
ondary processor.
If self-test fails for the processor or the memory module fails, the top seven
processor LEDs contain an error code that corresponds to the number of
the failing test. The test number is represented in binary-coded decimal,
with the most significant bit at the top. A bit is ONE if the light is ON.
For example, assume a processor fails its self-test (large green LED is
OFF) and shows the following pattern in the top seven LEDs:
TOP
(MSB) off 0 = 3
on 1
on 1
off 0
off 0
on 1 = 2
(LSB) off 0
BOTTOM
The failing test number decodes to 011 0010 (binary-coded decimal 32).
Section 2.5.2 gives more detail on the failing tests indicated by the proces-
sor LEDs.