HP 340 Series Service Manual page 104

Table 5-6a. Self:' Test LED Special State and Failure Codes
(In numerical order)
LEDs Explanation Problem Solution
0000 0000
No failure
0000 000.
Failed CPU register test. Replace processor board
0000 00.0
Testing top 16 Kbytes of RAM.
0000 00..
Failure in top 16 Kbytes of RAM. Replace RAM-1 board
0000 0.00
Top 16 Kbytes of RAM. missing or not found Replace RAM-1 board or processor board
by CPU.
0000 0 . . .
Starting test vector list.
0000 .000
Resetting all interfaces.
0000 .00.
Searching for console display.
0000 • • 00
Internal bit-mapped display checksum.
0000 • • • 0
Failed Boot ROM checksum.
0000 • • • •
Pre-loading RAM for main test.
000. 0000
RAM Testing
000. 000.
000. 00 • •
000. 0.00
000. 0.0.
Failure: Not enough RAM.
Failure: Boot error.
Failure: OS tried to start loading at too high
of an address.
Failure: Not enough RAM to load
as.
Replace processor board.
Replace RAM-1 board.
Replace processor board.
Replace
as
media.
Replace
as
media.
Replace processor board.
Upgrade to more RAM.
Use smaller
as.
Table 5-6b. Self-Test LED State and Failure Codes for Interfaces
(In numerical order)
LEDs Explanation Problem Solution
00.0 0000
Failure: 4 ms timer. Replace processor board.
00.0 00.0
Failure: Processor board keyboard circuit. Replace processor board.
00.0 0.00
Failure: Processor board HP-IB circuit Replace processor board.
00.0 .000
Failure: Processor board DMA circuit. Replace processor board.
00.0 • • 00
Failure - one of these: Replace video board.
Font ROM is bad.
Font ROM is not useable.
Could not find US ASCII character set.
00.0 • • 0.
Failure: Video board bit map circuit. Replace video board.
0.00 • • • 0
Failure: High-speed HP-IB or SCSI circuit. Replace High-speed HP-IB or SCSI board.
0.00 . 0 0 .
Failure: RS-232 circuit. Replace processor board.
0.00 0.00
Failure: SCSI circuit. Replace SCSI board.
92
Troll bleshooting