Fujitsu SPARC Enterprise T2000, Service Manual

Page: 45 / 174

Chapter 3 Server Diagnostics 3-5
5. Run POST. POST performs basic tests of the server components
and reports faulty FRUs.
Note -
diag_level=min
is the default ALOM
CMT setting, which tests devices required to boot
the server. Use
diag_level=max
for
troubleshooting and hardware replacement.
• If POST indicates a faulty FRU while
diag_level=min
, replace the FRU.
• If POST indicates a faulty memory device while
diag_level=max
, the detected errors might be
correctable by PSH after the server boots.
• If POST does not indicate a faulty FRU, go to
Action No.
9.
Section 3.4, “Running
POST” on page 3-26
TABLE 3-9
,
TABLE 3-10
Chapter 5
Section 3.4.5, “Correctable
Errors Detected by POST”
on page 3-36
6. Determine if the
fault is an
environmental
fault. If the fault listed by the
showfaults
command
displays a temperature or voltage fault, then the
fault is an environmental fault. Environmental
faults can be caused by faulty FRUs (power supply,
fan, or blower) or by environmental conditions
such as when computer room ambient temperature
is too high, or the server airflow is blocked. When
the environmental condition is corrected, the fault
will automatically clear.
If the fault indicates that a fan, blower, or power
supply is bad, you can perform a hot-swap of the
FRU. You can also use the fault LEDs on the server
to identify the faulty FRU (fans, blower, and power
supplies).
Section 3.3.2, “Running
the
showfaults
Command” on page 3-21
Chapter 4
Section 3.2, “Using LEDs
to Identify the State of
Devices” on page 3-8
TABLE 3-1
Diagnostic Flowchart Actions (Continued)
Action
No.
Diagnostic Action Resulting Action
For more information, see
these sections