HP 300

Table 5-5a, HP 98561 Boot ROM LED State and Failure Codes
Explanation
No failure
(In numerical order):
LED ripple (all on,
then off in sequence frorn MSB)
Resetting
I/O
Checksumming Boot ROM (or LED ripple)
LED Code
00000000
0000000.
000000.0
000000 ••
Testing top RAM (or rnaybe the Boot ROM checksum failed) a a a a a • a a
Processor board timer failed or is missing a a a a a • a •
Searching for boot extension ROMs a a a a a •• a
starting test vector list (or LED ripple) a a a a a • • •
Preloading RAM a a a a • a a a
Testing RAM
Checksumming ROM systems
LED ripple
Testing internal keyboard (or an
interrupt line is stuck)
Testing external keyboard
Testing internal
HP-IB
Testing internal rnass storage
Testing DMA
card
Checksumming ID/INIT ROM on bit-mapped video board
Testing alpha video board
Testing graphics on alpha/graphics (or LED ripple)
Testing
I/O card on select code 0
Testing I/O card on select code 1
through
Testing I/O card on select code 9
through
Testing I/O card on select code 31 (and LED ripple)
0000.00.
0000 •• 0.
0000 ••••
000.00.0
000.0.00
000.0 •• 0
000.0 •• 0
000 •• 000
000 ••• 0.
000 •••• 0
000 •••••
00.00000
00.0000.
through
00.0.00.
through
00 ••••••
Troubleshooting 117
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