66 Sun Fire X4140, X4240, and X4440 Servers Diagnostics Guide • August 2008
PCI SERR,
PERR
System or parity
error on a PCI bus.
Sync floods on HyperTransport links, the
machine resets itself, and error information
gets retained through reset.
The BIOS reports, A Hyper Transport
sync flood error occurred on last
boot, press F1 to continue.
DMI Log
SP SEL
Fatal
BIOS POST
Microcode
Error
The BIOS could not
find or load the
CPU Microcode
Update to the CPU.
The message most
likely appearswhen
a new CPU is
installed in a
motherboard with
an outdated BIOS.
In this case, the
BIOS must be
updated.
The BIOS displays an error message, logs the
error to DMI, and boots.
DMI Log Non-fatal
BIOS POST
CMOS
Checksum Bad
CMOS contents
failed the
Checksum check.
The BIOS displays an error message, logs the
error to DMI, and boots.
DMI Log Non-fatal
Unsupported
CPU
configuration
The BIOS supports
mismatched
frequency and
steppings in CPU
configuration, but
some CPUs might
not be supported.
The BIOS displays an error message, logs the
error, and halts the system.
DMI Log Fatal
Correctable
error
The CPU detects a
variety of
correctable errors in
the MCi_STATUS
registers.
The CPU corrects the error in hardware. No
interrupt or machine check is generated by
the hardware. The polling is triggered every
half second by SMI timer interrupts, and is
done by the BIOS SMI handler.
The SMI handler logs a message to the SP
SEL if the SEL is available, otherwise SMI
logs a message to DMI. The BIOS's polling
can be disabled through software SMI.
DMI Log
SP SEL
Normal
operation
Single 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 Non-fatal
TABLE D-1 Hardware Error Handling Summary (Continued)
Error Description Handling
Logged (DMI
Log or SP
SEL) Fatal?
