Lenovo ThinkServer RD120 Hardware Maintenance Manual page 183

LED Problem
PS 1 The power supply in bay 1 has failed.
PS 2 The power supply in bay 2 has failed.
CPU A microprocessor has failed.
VRM An error occurred on the
microprocessor voltage regulator
module (VRM).
CNFG A hardware configuration error has
occurred.
MEM When this LED is lit, a memory error
has occurred.
NMI A machine check error has occurred.
S ERR Reserved.
Action
Attention: In a dc power environment, only trained service
personnel other than Lenovo service technicians are authorized
to connect or disconnect power to the dc power supply and to
remove and install a dc power supply. See the documentation
that comes with each dc power supply.
Make sure that the power supply is correctly seated. If the
problem remains, replace the failed power supply.
Attention: In a dc power environment, only trained service
personnel other than Lenovo service technicians are authorized
to connect or disconnect power to the dc power supply and to
remove and install a dc power supply. See the documentation
that comes with each dc power supply.
Make sure that the power supply is correctly seated. If the
problem remains, replace the failed power supply.
1. Make sure that the failing microprocessor, which is indicated
by a lit LED on the system board, is installed correctly. See
"Installing a microprocessor" on page 113 for information
about installing a microprocessor.
2. Make sure that a ServeRAID 8k or 8k-l SAS controller is
installed and correctly seated. Make sure that the battery for
the ServeRAID 8k SAS controller is installed correctly.
3. If the problem remains, replace the microprocessor (trained
service technician only).
Replace the VRM. If the problem remains, replace the system
board (trained service technician only).
1. Check the microprocessors just installed to be sure that
they are compatible with each other and with the VRM (see
the microprocessor section of the User Guide for
compatibility requirements).
2. (Trained service technician only) Replace an incompatible
microprocessor.
3. Check the system error logs for information about the error.
Replace any components that are indicated. (Use the
Configuration/Setup Utility program to view the error logs.)
Replace the failing DIMM, which is indicated by the lit LED on
the system board.
Check the system error log for information about the error. (Use
the Configuration/Setup Utility program to view the error logs.)
165
Chapter 5. Diagnostics