Table 4: Status of the Controller LEDs
Status
Colour
LED
Indicates all fans present in the
chassis are in working condition.
Green
FAN LED
Indicates either a fan is missing
from its slot or is faulty.
Red
Indicates all PSUs present in the
chassis are in working condition.
Green
PSU LED
Indicates either a PSU is missing
from its slot or is faulty.
Red
Indicates that the controller unit is
powering ON.
Red
SYS LED (during controller boot
up)
Indicates BIOS loading.
Red (flashing slowly)
Indicates OS loading.
Yellow (flashing slowly)
Indicates secure boot failure.
Replace the controller unit.
Red (flashing fast)
Indicates that the controller unit is
not seated properly.
Yellow (flashing fast)
Indicates a major or critical alarm.
Red
SYS LED (controller is
operational)
Indicates a minor alarm.
Yellow
The module is operational and has
no active alarms.
Green
Applicable during OIR procedures.
Indicates that the system is cooling
down.
Blue (flashing)
Attention LED
Used to identify a specific chassis
in a rack or room. This is used for
troubleshooting purposes. Use the
hw-module attention led location
command to turn on this LED.
Blue
Power Supply Unit LED
The following table has details of the PSU LED:
Hardware Installation Guide for Cisco NCS 1004
66
LEDs
Power Supply Unit LED