Step 1240-6; Step 1240-7 - IBM RS/6000 44P 270 Service Manual

Step 1240-6

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. System board
b. Processor card(s)
3. Turn on the power.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO
YES

Step 1240-7

1. Turn off the power.
2. Remove all installed memory modules from the memory card that you tagged as
"suspect bad." Record the positions of the memory modules as they are removed
so that when you are instructed to reinstall them, they can be installed in their
original positions.
3. Install one pair of memory modules.
4. Turn on the power.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO
YES
42
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.
If there are no more memory modules to be installed, reseating the memory
modules on the memory card has corrected the problem.
If there was more than one pair of memory modules on the memory card, go
to "Step 1240-8" on page 43.
Go to "Step 1240-9" on page 43.