IBM 6C1 Service Manual page 69

Step 1240-2
1. Turn off the power.
2. Install a pair of memory DIMMs.
3. Turn on the power.
Does the system stop with a memory checkpoint or error code displayed on the
operator panel?
NO
YES
Step 1240-3
The failure may be caused by the last pair of memory DIMMs installed or the memory
card. To isolate the failing FRU, do the following:
1. Turn off the power.
2. Exchange the last memory DIMM pair installed with another pair removed in "Step
1240-1" on page 50 (or any other available pair).
3. Turn on the power.
Does the system stop with a memory checkpoint or error code displayed on the
operator panel?
NO
YES
Repeat this step until all the memory DIMMs are installed and tested.
If all the memory DIMMs have been installed, reseating the memory DIMMs on
the memory card has corrected the problem.
Go to "Map 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems .
Go to "Step 1240-3".
Go to "Step 1240-5" on page 52.
Go to "Step 1240-4" on page 52.
Chapter 3. Maintenance Analysis Procedures (MAPs)
51