Oracle Sun Netra T5440, Service Manual, Page: 14 / 162

1.2 Server Diagnostics Overview
14 Sun Netra T5440 Server • September 2015
TABLE 1-1
Diagnostic Flowchart Actions
Action
No.
Diagnostic Action Resulting Action Additional Information
1 Check Power OK and
Input OK LEDs on the
server.
The Power OK LED is located on the front and rear of the
chassis.
The Input OK LED is located on the rear of the server on each
power supply.
If these LEDs are not on, check the power source and power
connections to the server.
“1.3 Using LEDs to Identify the
State of Devices” on page 16
2 Run the ALOM CMT
CLI
showfaults
command to check for
faults.
The
showfaults
command displays the following kinds of faults:
■ Environmental faults
■ Solaris Predictive Self-Healing (PSH) detected faults
■ POST detected faults
Faulty FRUs are identified in fault messages using the FRU
name.
“Detecting
Faults” on page 29
3 Check the Solaris
log files for fault
information.
The Solaris message buffer and log files record system events
and provide information about faults.
■ If system messages indicate a faulty device, replace the FRU.
■ To obtain more diagnostic information, go to Action No. 4
“1.7 Collecting Information
From Solaris OS Files and
Commands” on page 45
4
Run SunVTS. SunVTS is an application you can run to exercise and diagnose
FRUs. To run SunVTS, the server must be running the Solaris
OS.
■ If SunVTS reports a faulty device replace the FRU.
■ If SunVTS does not report a faulty device, go to Action No. 5
“1.9 Exercising the
System With SunVTS
Software” on page 48
5 Run POST. POST performs basic tests of the server components and reports
faulty FRUs.
■ If POST indicates a faulty FRU, replace the FRU.
■ If POST does not indicate a faulty FRU, go to Action No. 9
“1.5 Running
POST” on page 32
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.
“Detecting
Faults” on page 29
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).
“1.3 Using LEDs to Identify the
State of Devices” on page 16
7 Determine if the fault
was detected by PSH.
If the fault message displays the following text, the fault was
detected by the Solaris Predictive Self-Healing software:
Host
detected fault
“1.6 Using the Solaris
Predictive Self-Healing
Feature” on page 40
If the fault is a PSH detected fault, identify the faulty FRU from
the fault message and replace the faulty FRU.
“Clearing PSH Detected
Faults” on page 43