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General Memory Information
Be sure to unplug the power cables before removing or installing memory DIMMs to avoid damage to
them.
Memory DIMMs must be installed in matched (size and speed) quads. Refer to "Memory DIMMs" on page
293 for labeling of the system backplane and instructions on memory DIMM removal and installation. Do
not, however, replace the covers as directed while troubleshooting this problem. Memory DIMM quads can
only be installed in one of the following two memory DIMM slot combinations:
v 1, 3, 6, and 8
v 2, 4, 5, and 7
There is no requirement that memory DIMM slots 1, 3, 6, and 8 be populated before memory DIMM slots
2, 4, 5, and 7.
Attention:
Go to the service processor menus. In the System Information Menu, select Memory
Configuration/ Deconfiguration. Verify on the first screen that memory repeat gard is disabled. If it is
enabled, disable it for the duration of this MAP. When exiting this MAP to go to MAP 0410 in the RS/6000
Eserver pSeries Diagnostic Information for Multiple Bus Systems, return the setting to enabled if
necessary.
Step 1240-1
1. Turn off the power. Remove the power cord.
2. Reseat the DIMMs.
3. Reattach the power cord. Wait for OK in the operator panel.
4. Turn on the power. Attempt to boot to the SMS menus. (The system may stop with an 8-digit error
code before it reaches the SMS menus.)
5. Power down the system using the white button. After the OK appears in the operator panel, look at the
memory configuration/deconfiguration menu.
Are any DIMMs deconfigured or does the error code recorded in "Step 1240-1" still appear?
NO
Reseating the DIMMs has corrected the problem.
Enable memory repeat gard if necessary.
Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries Diagnostic Information for
Multiple Bus Systems.
YES
If there is only one quad of DIMMs on the planar, go to "Step 1240-5" on page 57.
If there are two quads of DIMMs on the planar, go to "Step 1240-2" on page 57.
56
IntelliStation POWER 9114 Model 275 Service Guide
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