IBM System x3500 Installation And User Manual page 37

Table 2. Light path diagnostics panel LEDs (continued)
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.
LED Description
Configuration + Microprocessor
A hardware configuration error
has occurred.
Configuration
Configuration + Memory
A hardware configuration error
has occurred.
Configuration + Power supply
A hardware configuration error
has occurred.
When only the Memory LED is lit,
a memory error has occurred.
Memory
Memory + Configuration
When both the Memory and
Configuration LEDs are lit, the
memory configuration is invalid.
Action
If the Configuration LED and the Microprocessor LED are lit,
complete the following steps to correct the problem:
1. Check the microprocessors that were just installed to
make sure that they are compatible with each other (see
"Installing a second microprocessor and heat sink" on
page 98 for additional information about microprocessor
requirements).
2. (Trained technician only) Replace the incompatible
microprocessor.
3. Check the system-event logs for information about the
error. Replace any component that is identified in the error
log.
If the Configuration LED and the Memory LED are lit, check
the system-event logs for information about the error (see the
Problem Determination and Service Guide for more
information).
If the Configuration LED and the Power supply LED are lit,
the system issues an invalid power configuration error. Make
sure that both power supplies installed in the server are of the
same rating or wattage.
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.
If the Configuration LED is not lit, the system might detect a
memory error. Complete the following steps to correct the
problem:
1. Reseat or swap the DIMMs with lit LEDs.
2. Check the system-event logs for information about the
error (see the Problem Determination and Service Guide
for more information).
3. Update the server firmware to the latest level (see the
Problem Determination and Service Guide for more
information).
4. Replace the failing DIMM (see "Installing a memory
module" on page 77).
If the Memory LED and the Configuration LED are lit, check
the system-event logs for information about the error (see the
Problem Determination and Service Guide for more
information).
Chapter 1. The System x3500 M4 server
19