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64 Sun Fire X4140, X4240, and X4440 Servers Diagnostics Guide • August 2008
Hardware Error Handling Summary
TABLE D-1 summarizes the most common hardware errors that you might encounter
with these servers.
TABLE D-1 Hardware Error Handling Summary
Error Description Handling
Logged (DMI
Log or SP
SEL) Fatal?
SP failure The SP fails to boot
upon application of
system power.
The SP controls the system reset, so the
system may power on, but will not come out
of reset.
• During power up, the SP's boot loader
turns on the power LED.
• During SP boot, Linux startup, and SP
sanity check, the power LED blinks.
• The LED is turned off when SP
management code (the IPMI stack) is
started.
• At exit of BIOS POST, the LED goes to
STEADY ON state.
Not logged Fatal
SP failure SP boots but fails
POST.
The SP controls the system RESET, so the
system will not come out of reset.
Not logged Fatal
BIOS POST
failure
Server BIOS does
not pass POST.
There are fatal and non-fatal errors in POST.
The BIOS does detect some errors that are
announced during POST as POST codes on
the bottom right corner of the display on the
serial console and on the video display. Some
POST codes are forwarded to the SP for
logging.
The POST codes do not come out in
sequential order and some are repeated,
because some POST codes are issued by code
in add-in card BIOS expansion ROMs.
In the case of early POST failures (for
example, the BSP fails to operate correctly),
BIOS just halts without logging.
For some other POST failures subsequent to
memory and SP initialization, the BIOS logs a
message to the SP’s SEL.