Dimm Failure - Sun Microsystems Sun Ultra 5 Service Manual

TABLE 4-2
Pin
18
19
20
6. After you finish testing the power supply, remove the wrist strap, replace the
system cover, and power on the system as described in Chapter 10.
4.5

DIMM Failure

At times, the operating environment, diagnostic program, or POST might not
display a DIMM location (U number) as part of a memory error message. In this
situation, the only available information is a physical memory address and failing
byte (or bit). The following table lists physical memory addresses that can be used to
locate a defective DIMM.
TABLE 4-3
DIMM Slot
DIMM0
DIMM1
DIMM2
DIMM3
Power Supply Connector J17 Pin Assignments (Continued)
Signal
-5V
+5V
+5V
DIMM Physical Memory Address
DIMM Pair
(non-interleave)
00000000 - 0fffffff
10000000 - 1fffffff
Description
-5 VDC
+5 VDC
+5 VDC
Chapter 4 Troubleshooting Procedures 4-7