IBM System x3300 M4 Installation And Service Manual page 179

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Diagnostic
code Message
W.50001 [W.50001] A DIMM has been
disabled due to an error
detected during POST.
S.51003 [S.51003] An uncorrectable
memory error was detected in
DIMM slot % on rank %.
[S.51003] An uncorrectable
memory error was detected on
processor % channel %. The
failing DIMM within the
channel could not be
determined.
[S.51003] An uncorrectable
memory error has been
detected during POST.
Description
DIMM Disabled.
Fatal Memory Error Occurred.
Action
Note: Each time you install or
remove a DIMM, you must
disconnect the server from the power
source; then, wait 10 seconds before
restarting the server.
1. Make sure the DIMM is installed
correctly (see "Installing a
memory module" on page 62).
2. If the DIMM was disabled
because of a memory fault, follow
the suggested actions for that
error event.
3. If no memory fault is recorded in
the logs and no DIMM connector
error LED is lit, you can re-enable
the DIMM through the Setup
utility or the Advanced Settings
Utility (ASU).
1. Check the IBM support website
for an applicable retain tip or
firmware update that applies to
this problem.
2. If the problem remains, replace
the affected DIMMs.
3. (Trained technician only) If the
problem occurs on the same
DIMM connector, check the
DIMM connector. If the connector
contains any foreign material or is
damaged, replace the system
board.
4. (Trained technician only) Remove
the affected microprocessor and
check the microprocessor socket
pins for any damaged pins. If a
damage is found, replace the
system board.
5. (Trained technician only) Replace
the affected microprocessor (see
"Removing a microprocessor and
heat sink" on page 416 and
"Replacing a microprocessor and
heat sink" on page 418).
Chapter 4. Troubleshooting
161