Observable Problems - Lenovo Flex System x440 Compute Node Installation And Service Manual

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
Chapter 5 "Parts listing, Types 7167 and 2590" on page 53
• See
replaceable units (CRU) and which components are field replaceable units (FRU) that must be replaced only
by a trained service technician.
• If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
The amount of system memory
that is displayed is less than
the amount of installed
physical memory.

Observable problems

Use this information to solve observable problems.
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
Action
1. Make sure that:
a. You have installed the correct type of memory (see
page 892).
b. Memory mirroring or memory sparing mode does not account for the
discrepancy. You can check the memory configuration in the Setup utility
(see "Using the Setup utility" on page
2. If new memory has recently been installed, make sure that no configuration
events are reported in the event log. If there are any events, resolve them.
3. If the compute node was recently installed, moved, or serviced, make sure that
the DIMMs are correctly seated in the connectors (see
page 892).
4. Make sure that all DIMMs are enabled. The compute node might have
automatically disabled a DIMM when it detected a problem, or a DIMM might
have been manually disabled (see
5. Run memory diagnostics (see
diagnostic program " on page
6. Remove DIMMs until the compute node is showing the correct amount of
memory. Install one DIMM at a time until you can determine the DIMM that is
not working properly. Remove that DIMM and replace it with a good DIMM (see
"Removing a DIMM" on page
Note: After you install or remove a DIMM, you must change and save the new
configuration information by using the Setup utility. When you turn on the
compute node, a message indicates that the memory configuration has
changed. Start the Setup utility and select Save Settings (see
utility" on page 28 for more information) to save changes.
7. Contact Support.
to determine which components are customer
"Installing a DIMM " on
28).
"Installing a DIMM " on
"Using the Setup utility" on page
"Lenovo Dynamic System Analysis Preboot
67).
891, and "Installing a DIMM " on page
Chapter 6
28).
892).
"Using the Setup
.
Troubleshooting
869