Lit light path
diagnostics LED with
the system-error or
information LED also
lit Description Action
None An error has occurred and cannot be
diagnosed, or the Advanced System
Management (ASM) processor on the
Remote Supervisor Adapter II SlimLine
has failed. The error is not represented
by a light path diagnostics LED.
Check the system error log for information about
the error.
OVER SPEC The power supplies are using more
power than their maximum rating.
Replace the failing power supply, or remove
optional devices from the server.
PS1 The power supply in bay 1 has failed. Replace the failed power supply.
PS2 The power supply in bay 2 has failed. Replace the failed power supply.
CPU A microprocessor has failed. 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 22 for information about installing a
microprocessor.
VRM Reserved. Reserved.
CNFG Microprocessor configuration error. v Check the microprocessor options for
compatibility.
v Check the system error log for information
indicating incompatible components.
MEM A memory error has occurred. Replace the failing DIMM, which is indicated by the
lit LED on the system board.
NMI A machine check error has occurred. Check the system error log for information about
the error.
S ERR Reserved
SP The service processor has failed. Remove ac power from the server; then, reconnect
the server to ac power and restart the server.
If a Remote Supervisor Adapter II SlimLine is
installed, replace it.
DASD A hard disk drive error has occurred. Check the LEDs on the hard disk drives and
replace the indicated drive.
BRD An error has occurred on the system
board.
v Check the LEDs on the system board to identify
the component that is causing the error.
v Check the system error log for information about
the error.
FAN A fan has failed, is operating too slowly,
or has been removed. A failing fan can
also cause the TEMP LED to be lit.
Replace the failing fan, which is indicated by a lit
LED near the fan connector on the system board.
TEMP The system temperature has exceeded
a threshold level.
v Determine whether a fan has failed. If it has,
replace it.
v Make sure that the room temperature is not too
high. See “Features and specifications” on page
4 for temperature information.
v Make sure that the air vents are not blocked.
RAID A RAID controller error has occurred. Check the system error log for information about
the error. If an optional RAID controller adapter is
installed, see the documentation that comes with
the RAID controller.
70 IBM System x3550 Type 7978: Installation Guide
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