Boot Rom Error Codes - HP 9000 Series 360 Service Handbook

Boot ROM Error Codes
LEDs
0000 0000
0000 000.
0000 00 • •
0000 0.00
0000 • • • 0
000. 000.
000. 00.0
000. 00 • •
000. 0.00
000. 0.0.
Table 4-2a. Boot ROM LED Error Codes
(In
numerical order)
Explanation
No failure
Failed CPU register test.
Failure in top 16 Kbytes of RAM.
Top 16 Kbytes of RAM missing or not found by CPU.
Failed Boot ROM checksum.
Failure: Not enough RAM.
Failure: ROM system.
Failure: Boot error.
Failure: OS tried to start loading at too high of an address.
Failure: Not enough RAM to load OS.
Table 4-2b. Boot ROM LED Error Codes for Interfaces
(In
numerical order)
LEDs Explanation
00.0 0000
Failure: 4 ms timer.
00.0 00.0
Failure: Processor board keyboard circuit.
00.0 00 • •
Failure: External key board circuit.
00.0 0.00
Failure: Internal HP-IB circuit
00.0 .000
Failure: DMA circuit.
00.0 • • 00
Failure - one of these high-res video circuits:
Font ROM is bad.
Font ROM is not usable.
Could not find US ASCII character set.
00.0 • •
0.
Failure: Video board bit map circuit.
0.00 0000
Failure: I/O circuit at select code
o.
Each successive LED pattern represents an I/O failure at select
codes 2 through 30.
0.0 • • • • •
Failure: I/O circuit at select code 31.
30
Troubleshooting