HP SureStore E Disk Array 12H User's and Service Manual (C5445-90901, September 1999)

Troubleshooting
Power On Sequence Test
121
Troubleshooting
Power On Sequence Test
When the disk array is powered on, it goes through a power on sequence test, during which time various
numbers are displayed on the front panel. The numbers step higher as each initialization step is completed.
The changing sequence numbers assure you that the disk array is performing the various power-on tests.
When the tests have all completed, the front panel will display the word “ready.” If the word “ready” is not
eventually displayed, the sequence number at which the power on stops will help diagnose what might have
went wrong.
Table 9. Power On Sequence Test
Sequence
Code Description of Power On Sequence Test Performed
1 host SRAM test; parity SRAM test
4 chip register test; data path tests
6 ROM test; copy perf code to SRAM
10 delay for mirror to come up; start mirrored communications
12 check backplane
16 start early spinup
20 local NVRAM pretest
22 remote NVRAM pretest
24 local NVRAM decode test
26 setup remote NVRAM decode test
28 remote NVRAM decode test
30 SIMM 1, 1st half test
32 SIMM 1, 2nd half test (32 MB SIMMs only)
34 SIMM 2, 1st half test
36 SIMM 2, 2nd half test (32 MB SIMMs only)
38 remote SIMM 1, 1st half test
40 remote SIMM 1, 2nd half test (32 MB SIMMs only)
42 remote SIMM 2, 1st half test