Dvd-Rom Command Errors; Power Supply Troubleshooting - Sun Microsystems Sun Blade 1000 Service Manual

4.5.2

DVD-ROM Command Errors

Symptom
The DVD-ROM drive fails to respond to commands.
Action
Test the drive response to the probe-scsi command as follows:
Note – To bypass POST, type
necessary, see Section 3.3, "Setting Up POST to Run in an OpenBoot PROM
Environment" on page 3-4.
At the system ok prompt type:
ok reset-all
ok probe-scsi-all
If the DVD-ROM drive responds correctly to probe-scsi all, the message
identified in
successfully probed the device. This is an indication that the motherboard is
operating correctly.
If the drive does not respond to the SCSI controller probe, replace the unresponsive
drive.
4.6

Power Supply Troubleshooting

Caution – This procedure must be performed by a qualified, Sun Blade 1000 and
Sun Blade 2000 service-trained, maintenance provider. Persons who remove any of
the outer panels to access the internal workstation hardware must observe all safety
precautions and comply with skill level requirements, certification, and all
applicable local and national laws.
Caution – During the power supply voltage measurement checks, an operational
load must be connected to the power supply. Ensure that the power supply cables
remain connected to the motherboard.
4-6 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002
setenv diag-switch? false
is displayed; the system SCSI controller has
CODE EXAMPLE 4-5
at the ok prompt if