Table 5: Status of the PSU LED
Status
Colour
LED
Indicates no input to the PSU and
the 12V from the other PSU
(parallel unit) is not available.
Off (no colour)
PSU LED
Indicates a critical fault on the PSU
or that the PSU is in OFF condition.
This occurs when there is no input
to the PSU, 12V from the other
PSU (parallel unit) is available.
Amber (solid)
Indicates that the PSU is disabled.
This occurs when input is present
but the PSU is disabled by the
system (the Enable pin is in OFF
position).
Green(blinking)
Indicates a minor fault on the PSU.
The minor fault could be - fan fault
or 12V over-current warning or
temperature warning.
Amber (blinking)
Indicates that the PSU is working
fine and that the Vout (output
voltage) is in regulation.
Green (solid)
Fan Unit LED
The following table has details of the fan unit LED:
Table 6: Status of the Fan Unit LED
Status
Colour
LED
Indicates that the fan unit is not
inserted properly or chassis is
powered off.
Off (no colour)
FAN LED
Indicates a fault in the fan unit.
This occurs when the fan speed is
out of range or the fan unit is
inserted but not powered on.
Red (solid)
Indicates that the fan unit is
working fine.
Green (solid)
Hardware Installation Guide for Cisco NCS 1004
67
LEDs
Fan Unit LED