4-8 SPARCstation 5 Service Manual—November 1996
4
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.”
Figure 4-2 DSIMM Slot Locations
SIMM slot J0301
SIMM slot J0302
SIMM slot J0303
SIMM slot J0400
SIMM slot J0401
SIMM slot J0402
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
SIMM slot J0300 Slot 0
SIMM slot J0403 Slot 7
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