Step 1240-10; Step 1240-11 - IBM RS/6000 44P 270 Service Manual

Step 1240-10

One of the FRUs remaining in the system unit is defective.
1. Turn off the power.
2. Exchange the following FRUs in the order listed.
a. Memory card
b. System board
c. Processor card(s)
3. Turn on the power.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO
YES

Step 1240-11

One or both of the memory modules that you exchanged in the previous step may be
defective. To isolate the failing memory module, do the following:
1. Turn off the power.
2. Reinstall one of the memory modules you exchanged in the previous step.
3. Turn on the power.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO
YES
44
Service Guide
Go to "Map 0410: Repair Checkout" in the RS/6000 and Eserver pSeries
Diagnostics Information for Multiple Bus Systems.
Reinstall the original FRU.
Repeat this step until the defective FRU is identified or all the FRUs have been
exchanged.
If the symptom did not change and all the FRUs have been exchanged, go to
"MAP 1540: Minimum Configuration" on page 50.
Repeat this step with the second memory module you exchanged in the
previous step.
If both memory modules have been tested, go to "Map 0410: Repair
Checkout" in the RS/6000 and Eserver pSeries Diagnostics Information for
Multiple Bus Systems.
Replace the memory module.
If you have not tested both memory modules, repeat this step with the second
memory module you exchanged in the previous step.
If the symptom did not change and both memory modules have been
exchanged, go to "Step 1240-10".