IBM 6C1, Service Manual

Page: 86 / 377

Step 1540-6
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 and remove the power cords.
2. Exchange the last memory DIMM pair installed.
3. Plug in the power cords and wait for the OK on the operator panel display.
4. Turn on the power.
Does the system stop with code E1F2, E1F3, STBY or 4BA00830 displayed on the
operator panel?
NO Go to “Step 1540-8” on page 69.
YES Go to “Step 1540-7”.
Step 1540-7
The memory DIMM(s) (may be both) you exchanged in the previous step may be
defective. To isolate the failing DIMM, do the following:
1. Turn off the power and remove the power cords.
2. Reinstall one of the memory DIMMs you exchanged in the previous step.
3. Plug in the power cords and wait for the OK on the operator panel display.
4. Turn on the power.
Does the system stop with code E1F2, E1F3, STBY or 4BA00830 displayed on the
operator panel?
NO Replace the memory DIMM.
If you have not tested both memory DIMMs repeat this step with the second
memory module you exchanged in the previous step.
If the symptom did not change and both memory DIMMs have been
exchanged, go to “Step 1540-8” on page 69.
YES Repeat this step with the second memory DIMM you exchanged in the
previous step.
If both memory DIMMs have been tested, go to
″
MAP 0410: Repair Checkout
″
in the RS/6000
Eserver
pSeries Diagnostic Information for Multiple Bus
Systems.
68
Service Guide