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Troubleshooting
Troubleshooting the SCSI I/O Board
102
A4125-66522 FWD Core I/O Board
Boot system to BCH
Execute IN IO
Execute SEA FWSCSI
The core I/O board is most likely
the problem. Replace it and try the
system again. If it still fails and you
reach this point again, replace the
backplane instead.
System found SCSI
and LAN chips?
System found only
LAN chip?
System found SCSI
and LAN chips?
YES
NO
A
YES
YES
NO
NO
The backplane board is most likely
the problem. Replace it and try the
system again. If it still fails and you
reach this point again, replace the
core I/O board instead.
Getting to this box indicates that the
system only found the SCSI chip
and not the LAN chip. This
shouldn’t happen if you are dealing
with a SCSI failure.