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Appendix D Error Handling 67
Multiple fan
failure
Fan failure is
detected by reading
tach signals.
The Front Fan Fault, Service Action Required,
and individual fan module LEDs are lit.
SP SEL Fatal
Single power
supply failure
When any of the
AC/DC
PS_VIN_GOOD or
PS_PWR_OK
signals are
deasserted.
Service Action Required, and Power Supply
Fault LEDs are lit.
SP SEL Non-fatal
DC/DC power
converter
failure
Any
POWER_GOOD
signal is deasserted
from the DC/DC
converters.
The Service Action Required LED is lit, the
system is powered down to standby power
mode, and the Power LED enters standby
blink state.
SP SEL Fatal
Voltage
above/below
threshold
The SP monitors
systemvoltages and
detects voltage
above or below a
given threshold.
The Service Action Required LED and Power
Supply Fault LED blink.
SP SEL Fatal
High
temperature
The SP monitors
CPU and system
temperatures, and
detects
temperatures above
a given threshold.
The Service Action Required LED and System
Overheat Fault LED blink. The motherboard
is shut down above the specified critical level.
SP SEL Fatal
Processor
thermal trip
The CPU drives the
THERMTRIP_L
signal upon
detecting an
overtemp condition.
CPLD shuts down power to the CPU. The
Service Action Required LED and System
Overheat Fault LED blink.
SP SEL Fatal
Boot device
failure
The BIOS isnot able
to boot from a
device in the boot
device list.
The BIOS goes to the next boot device in the
list. If all devices in the list fail, an error
message is displayed, retry from beginning of
list. SP can control/change boot order.
DMI Log Non-fatal
TABLE D-1 Hardware Error Handling Summary (Continued)
Error Description Handling
Logged (DMI
Log or SP
SEL) Fatal?