Interpreting LEDs
Rear Panel Controls and LEDs
No. LED Icon or Label Description
1 PS AC OK LED AC Indicates these conditions:
■ Off – No AC power applied to this power supply.
■ Green steady on – AC power is applied to this power supply and is
within specifications.
■ Amber steady on – AC power is applied to this power supply and
is below 85V.
2 PS DC OK LED (green) Indicates these conditions:
■ Off – 12V DC output from this power supply is disabled or not
within specification.
■ Steady on – 12V DC output from this power supply is present and
within specifications.
3 PS Fault LED (amber) Indicates these conditions:
■ Off – Steady state, no service action is required.
■ Steady on – A fault has been detected on this power supply.
4 NET MGT Port Link and
Activity LED (green on left)
NET MGT Port Speed LED
(green on right)
LINK/ACT
SPD
Indicates these conditions:
■ Off – No link is established.
■ Steady On – A link is established.
■ Blinking – A link is established and there is activity on the port.
Indicates these conditions:
36 SPARC T8-2 Server Service Manual • June 2019
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