IBM RS/6000 7043 260, Service Manual

Page: 53 / 322

Step 1240-9
The failure may be caused by the last pair of memory modules installed or the
memory card. To isolate the failing FRU, do the following:
1. Turn the power off.
2. Exchange the last memory module pair installed.
3. Turn the power on.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO Go to “Step 1240-11” on page 2-22.
YES Go to “Step 1240-10.”
Step 1240-10
One of the FRUs remaining in the system unit is defective.
1. Turn the power off.
2. Exchange the following FRUs in the order listed.
a. Memory card
b. System board
c. Processor card(s)
3. Turn the power on.
Does the system stop with a memory checkpoint displayed on the operator
panel?
NO Go to "Map 0410: Repair Checkout" in the
IBM RS/6000 Diagnostic
Information for Multiple Bus Systems.
YES 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 2-31.
Chapter 2. Maintenance Analysis Procedures
2-21