Table 5-4a. Model 330/350 Boot ROM
LED
State and Failure Codes
Explanation
No failure
(In numerical order):
LED
ripple (all on,
then
off in sequence from MSB)
Resetting
I/O
LED
Code
o 0 0 0
0000
o
000
0 0
O.
o 0 0 0
00.0
Checksull1ming
Boot
ROM
(or LED ripple) 0 0 0 0 0 0
••
Testing
top
RAM
(or
maybe
the
Boot
ROM
checksum failed) 0 0 0 0 0 •
00
Processor
board
timer
failed
or
is missing 0 0 0 0 0 •
O.
Searching for
boot
extension
ROMs
0 0 0 0 0 •
.0
starting
test
vector list (or LED ripple) 0 0 0 0 0
•••
Preloading
RAM
0 0 0 0 • 0
00
Testing
RAM
Checksull1ming RO M systems
LED ripple
Testing internal keyboard (or
an
interrupt
line is stuck)
Testing
external
key
board
Testing
internal
HP-IB
Testing internal mass storage
Testing D MA
card
Checksun1ming
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)
Continued
on
the
next
page.
o 0 0 0 • 0
O.
o 0 0 0 • •
O.
0000
••••
o 0 0 • 0
0.0
000
• 0 •
00
000
• 0
••
0
o 0
O.
O
••
0
o 0 0
••
0
00
o 0 0
••
•
O.
000
••••
0
000
•••••
00.
0 0 0
00
o
O.
0 0 0
O.
through
o
O. O.
0
O.
through
00
••••••
Troubleshooting
163
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