v
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v
See Chapter 5, “Parts listing, IBM System x3300 M4 Type 7382,” on page 303 to check if a component is a
consumable, structural, or FRU part.
v
If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
Symptom
Action
Multiple rows of DIMMs in a
branch are identified as failing.
1.
Reseat the DIMMs; then, restart the server.
2.
Remove the lowest-numbered DIMM pair of those that are identified and
replace it with an identical pair of known good DIMMs; then, restart the
server. Repeat as necessary. If the failures continue after all identified pairs are
replaced, go to step 4.
3.
Return the removed DIMMs, one pair at a time, to their original connectors,
restarting the server after each pair, until a pair fails. Replace each DIMM in
the failed pair with an identical known good DIMM, restarting the server after
each DIMM. Replace the failed DIMM. Repeat step 3 until you have tested all
removed DIMMs.
4.
Replace the lowest-numbered DIMM pair of those identified; then, restart the
server. Repeat as necessary.
v
If one DIMM fails, the user can reverse the DIMMs between the channels (of
the same microprocessor), and then restart the server. If the problem is
related to a DIMM, replace the failing DIMM.
v
(Trained technician only) Install the failing DIMM into a DIMM connector
for microprocessor 2 (if installed) to verify that the problem is not the
microprocessor or the DIMM connector.
5.
(Trained technician only) Replace the system board.
Microprocessor problems
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v
See Chapter 5, “Parts listing, IBM System x3300 M4 Type 7382,” on page 303 to check if a component is a
consumable, structural, or FRU part.
v
If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
Symptom
Action
The server goes directly to the
POST Event Viewer when it is
turned on.
1.
Correct any errors that are indicated by the light path diagnostics LEDs (see
Light path diagnostics LEDs).
2.
Make sure that the server supports all the microprocessors and that the
microprocessors match in speed, type, and cache size. To view the
microprocessor information, run the Setup utility and select
System
Information
→
System Summary
→
Processor
.
3.
(Trained technician only) Make sure that microprocessor 1 is seated correctly.
4.
(Trained technician only) Remove microprocessor 2 and restart the server.
5.
Replace the following components one at a time, in the order shown, restarting
the server each time:
a.
(Trained technician only) Microprocessor
b.
(Trained technician only) System board
Chapter 4. Troubleshooting
285
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