Determining Faulty Dsimm Locations - Sun Microsystems SPARCclassic Service Manual

ok probe-scsi
Target 1
Unit 0 Disk SEAGATE ST1480
Target 3
Unit 0 Disk SEAGATE ST1480
a. If the disk drive responds and a message is displayed, the system SCSI
controller has successfully probed the devices.
This indicates that the system board is working correctly.
b. If a disk doesn't respond:
i. Verify that the SCSI target ID is set correctly. Make sure that every SCSI
disk and other SCSI device on the SCSI bus has a different SCSI target
ID.
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 have not found the problem, after checking the previous causes,
replace the unresponsive drive.
v. If the problem still occurs after replacing the drive, replace the system
board.
vi. If replacing the disk drive and the system board does not correct the
problem, replace the internal disk drive cable assembly.

Determining Faulty DSIMM Locations

The Sundiag System Exerciser, SunDiagnostic Executive, and POST diagnostics can
report memory errors encountered during program execution. For general
information about diagnostics see Chapter 2, "Troubleshooting Overview." Memory
error messages on the video monitor usually indicate a physical memory address
where the error was detected.
SUN0424 Copyright (c) 1991
SUN0424 Copyright (c) 1991
Troubleshooting Procedures
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