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Chapter 4 Troubleshooting Procedures 4-7
FIGURE 4-3 Power Supply Connector J2903
4.5 DIMM Failure
At times, the operating system, diagnostic program, or POST may 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).
TABLE 4-5 lists physical memory addresses to locate a defective DIMM.
TABLE 4-4 Power Supply Connector J2903 Pin Description
Pin Function Pin Function
1 +3.3 Vdc Rtn 4 +3.3 Vdc
2 +3.3 Vdc Rtn 5 +3.3 Vdc
3 +3.3 Vdc Rtn 6 +3.3 Vdc
12 34 56 789101112
123456