Boot Rom State Codes - HP 9000 Series 319C+ Service Handbook

Boot ROM State Codes
Table 4-3. LED State Codes In Numerical Order
LEDs
Test Activity
0000 0000
No failure
0000 000.
LED ripple (all on, then off in sequence from MSB)
0000 00.0
Resetting I/O
0000 0 0 . .
Checksumming Boot ROM (or LED ripple)
0000 0.00
Testing top RAM (or maybe the Boot ROM checksum failed)
0000 0 • • 0
Searching for boot extension ROMs
0000
0...
Starting test vector list (or LED ripple)
0000 .000
Preloading RAM
0000 . 0 0 .
Testing RAM
0000 • • • •
LED ripple
000. 00.0
Testing keyboard circuit (or an interrupt line is stuck)
000. 0 • • 0
Testing processor HP-IB
000 • • 000
Testing DMA
000 • • •
0.
Checksumming ID /INIT ROM
oo.x xxxx Testing I/O at select code x xxxx
Troubleshooting 33
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