Sun Microsystems Netra T5220, Service Manual

Page: 15 / 178

Chapter 1 Server Diagnostics 1-5
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. Section 1.3, “Using LEDs to
Identify the State of
Devices” on page 1-8
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. For a list of FRU names, see
TABLE 2-1
.
Section 1.4.4, “Displaying
System Faults” on
page 1-21
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 4.
Section 1.7, “Collecting
Information From Solaris
OS Files and Commands”
on page 1-42
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
5.
Section 1.9, “Exercising the
System With SunVTS
Software” on page 1-46
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 9.
Section 1.5, “Running
POST” on page 1-27