Chapter 4 Troubleshooting Procedures 4-7
b. If a disk doesn’t respond:
i. Make sure that every SCSI disk and other SCSI device on the SCSI bus has
a different SCSI target ID (see Appendix C).
Note – Internal SCSI hard drives are automatically assigned target 3 (lower bay)
and target 1 (upper bay).
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.
4.4 Determining Faulty DSIMM Locations
The SunDiag System Exerciser, SunVTS , 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.
Depending on the diagnostic program you are running, a DSIMM location number
(“J” number) or a memory address may be displayed.
If the error message displays the location number, see
FIGURE 4-2 for DSIMM location
numbers. If the error message displays a physical memory address, consult
TABLE 4-4
to see which memory slot contains the physical address.
For example, if an error is detected at physical memory address 12fe958, examining
TABLE 4-4 shows that the error occurred in the DSIMM in slot 0.
After you have identified the defective DSIMM, follow the instructions in
Section 11.3.1 “Removing a DSIMM, for removing the defective DSIMM. To replace
the DSIMM, follow the directions in Section 11.3.2 “Replacing a DSIMM.
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