Performing Advanced Troubleshooting
No. LED Icon or Label Description
6 AC OK LEDs
CMIOU chassis (top; SPARC
M7-16): AC 15 through AC 10
Switch chassis (SPARC M7-16):
AC 9 through AC 6
CMIOU chassis (bottom): AC 5
through AC 0
These LEDs light only after the SP LED turns green
and indicate these conditions:
■ Off – No AC power is applied to the indicated
power supplies.
■ Green – AC power is applied to the indicated
power supplies.
Related Information
■
“Front Indicator Panel Controls and LEDs” on page 46
■
“Locate the Server” on page 61
Performing Advanced Troubleshooting
If you are unable to diagnose faults using the methods provided in “Checking for
Faults” on page 35, use any of the following methods to diagnose faults on the server.
Description Links
Generate and examine diagnostic information. “Display Fault Diagnostics (Message
Buffer)” on page 50
Examine log files for additional information about the
server.
“View Log Files (Oracle Solaris)” on page 51
“View Log Files (Oracle ILOM)” on page 51
Generate and examine low-level diagnostic
information generated by POST.
“Checking Server and Component Health With
POST” on page 52
Display Fault Diagnostics (Message Buffer)
Run the dmesg command on the host to check the system buffer for recent diagnostic messages
and then display them.
1.
Log in as superuser.
2.
Type:
50 SPARC M8 and SPARC M7 Servers Service Manual • September 2017
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