HP 9000 Series 310 Service Information Manual page 127

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
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 .
0 0 0 0 0 0 . 0
0 0 0 0 0 0 • •
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)
0 0 0 0 . 0 0 .
0 0 0 0 • • 0 .
0 0 0 0 • • • •
0 0 0 . 0 0 . 0
0 0 0 . 0 . 0 0
0 0 0 . 0 • • 0
0 0 0 . 0 • • 0
000 • • 0 0 0
000 • • • 0 .
000 • • • • 0
000 • • • • •
0 0 . 0 0 0 0 0
0 0 . 0 0 0 0 .
through
0 0 . 0 . 0 0 .
through
00 • • • • • •
Troubleshooting
117