Lenovo x3530 M4 Installation And Service Manual page 131

Table 12. Light path diagnostics panel LEDs (continued)
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If a action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
LED Description
NMI A nonmaskable interrupt has
occurred, or the NMI button was
pressed.
CONFIG A hardware configuration error
has occurred.
An invalid microprocessor
CPU
configuration or a microprocessor
has failed (both the CPU LED and
the CONFIG LED might be lit).
Action
Check the system-event log for information about the error.
1. If the CONFIG LED and the CPU LED are lit, complete the
following steps to correct the problem:
a. Check the microprocessors that were just installed to
make sure that they are compatible with each other (see
"Replacing a microprocessor and heat sink" on page
265 for additional information about microprocessor
requirements).
b. (Trained technician only) Replace the incompatible
microprocessor.
c. Check the system-event logs for information about
the error. Replace any components that are identified
in the error log.
2. If the CONFIG LED and the MEM LED are both lit,
complete the following steps:
a. Make sure that the DIMM configuration is supported
(see "Installing a memory module" on page 35 for DIMM
requirements and installation sequence information).
b. Replace the DIMMs with a supported configuration.
1. If the CONFIG LED is lit, the system issues an invalid
microprocessor configuration error. Complete the
following steps to correct the problem:
a. Check the microprocessors that were just installed
to make sure that they are compatible with each
other (see "Replacing a microprocessor and heat
sink" on page 265 for additional information about
microprocessor requirements) and use the Setup
utility and select System Information ® System
Summary ® Processor to verify the microprocessors
information.
b. (Trained technician only) Replace the incompatible
microprocessor.
c. Check the system-event logs for information about
the error. Replace any components that are identified
in the error log.
2. If the CPU LED is lit and the CONFIG LED is not lit,
complete the following steps:
a. (Trained technician only) Make sure that the failing
microprocessor, which is indicated by a lit LED on the
system board, is installed correctly. See "Replacing
a microprocessor and heat sink" on page 265 for
information about installation and requirements.
.
Chapter 4 Troubleshooting
117