IBM System x3500 Installation And User Manual page 36

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
When only the Microprocessor
LED is lit, a microprocessor has
failed.
Microprocessor
Microprocessor + Configuration
When both the Microprocessor
and Configuration LEDs are lit,
the microprocessor configuration
is invalid.
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IBM System x3500 M4 Type 7383: Installation and User's Guide
Action
If the Configuration LED is not lit, a microprocessor failure
occurs, complete the following steps:
1. (Trained technician only) Make sure that the failing
microprocessor and its heat sink, which are indicated by a
lit LED on the system board, are installed correctly. See
"Installing a second microprocessor and heat sink" on
page 98 for information about installation and
requirements.
2. (Trained technician only) Replace the failing
microprocessor (see "Installing a second microprocessor
and heat sink" on page 98).
3. If the failure remains, go to http://www.ibm.com/systems/
support/supportsite.wss/docdisplay?brandind=5000008
&lndocid=SERV-CALL.
If the Configuration LED and the Microprocessor LED are lit,
the system issues an invalid microprocessor configuration
error. 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) and use the Setup utility and select System
Information → System Summary → Processor Details to
verify the microprocessors information.
2. (Trained technician only) Replace the incompatible
microprocessor.
3. Check the system-error logs for information about the
error. Replace any component that is identified in the error
log.