IBM LS42 - BladeCenter - 7902, Руководство по обслуживанию

Страница: 104 / 194

Memory 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 3, “Parts listing, Types 7901 and 7902,” on page 19 to determine which components are CRUs and
which components are FRUs.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Symptom Action
The amount of system memory
that is displayed is less than the
amount of installed physical
memory.
1. Make sure that:
v
You have installed the correct type of memory (see “Features and
specifications” on page 2).
v If you changed the memory, you updated the memory configuration in the
Setup Utility program (see “Using the Setup Utility program” on page 11).
v
All banks of memory are enabled. The blade server might have
automatically disabled a memory bank when it detected a problem, or a
memory bank might have been manually disabled (see “Using the Setup
Utility program” on page 11).
2.
Check BMC log for error message 289 (see “Error logs” on page 72):
v
If a DIMM was disabled by a system-management interrupt (SMI), replace
the DIMM (see “Removing a memory module” on page 37 and “Installing a
memory module” on page 38).
v
If a DIMM was disabled by the user or by POST, run the Setup Utility
program and enable the DIMM (see “Using the Setup Utility program” on
page 11).
3. Reseat the following components:
a. DIMMs (see “Removing a memory module” on page 37 and “Installing a
memory module” on page 38)
b.
MPE unit, if one is installed (see “Removing an expansion unit” on page 31
and “Installing an expansion unit” on page 32)
4. Replace the following components one at a time, in the order shown, restarting
the blade server each time:
a. DIMMs (see “Removing a memory module” on page 37 and “Installing a
memory module” on page 38)
b. (Trained service technician only) MPE board assembly, if one is installed
(see “Removing an expansion unit” on page 31 and “Installing an
expansion unit” on page 32)
c. (Trained service technician only) system-board assembly (see “Removing
the system-board assembly” on page 62 and “Installing the system-board
assembly” on page 62)
92
BladeCenter LS22 Type 7901 and LS42 Type 7902: Problem Determination and Service Guide