IBM 7979B1U User Manual page 42

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the parts listing in the Problem Determination and Service Guide to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
LED Description
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 A memory error has occurred.
NMI A machine check error has occurred.
S ERR Reserved.
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System x3650 Type 7979: User's Guide
Action
Attention: In a dc power environment, only trained service
personnel other than IBM 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.
1. Make sure that the power supply is correctly seated.
2. Replace the failed power supply.
Attention: In a dc power environment, only trained service
personnel other than IBM 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.
1. Make sure that the power supply is correctly seated.
2. 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 62 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. Call for service.
1. Replace the VRM.
2. Call for service.
1. Check the microprocessors that were just installed to make
sure that they are compatible with each other and with the
VRM (see "Installing a microprocessor" on page 62 for
compatiblity 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.
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.