Sun Microsystems SPARCstation 5 Service Manual page 61

4.3.1 Verifying the Built-In SCSI Controller
To check whether the built-in SCSI controller is defective, test the drive
response to the probe-scsi command. To test additional SCSI host adapters
added to the system, use the probe-scsi-all command. Refer to
Section D.1.6, "module-info."
1. At the ok prompt, type probe-scsi
See the following example.
ok probe-scsi
Target 1
Target 3
a. If the disk drive responds and a message is displayed, the system SCSI
b. If a disk doesn't respond:
Note – Internal SCSI hard drives are automatically assigned target 3
(lower bay) and target 1 (upper bay).
Troubleshooting Procedures
Unit 0 Disk CONNER CP30548
Unit 0 Disk SEAGATE ST3610N
controller has successfully probed the devices.
This indicates that the system board is working correctly.
i. Make sure that every SCSI disk and other SCSI device on the
SCSI bus has a different SCSI target ID (see Appendix C,
"SCSI Targeting").
ii. Verify that all SCSI cables and the SCSI terminator are connected
securely.
iii. Check the SCSI cables to make sure there are no bent pins.
iv. If you still have not found the problem, replace the
unresponsive drive.
v. If the problem still occurs after replacing the drive, replace the
system board.
vi. If the problem persists, replace the internal disk drive
cable assembly.
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