Cisco Firepower 4100 Series Manual - Page 20
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Fan Modules
Figure 13: Power Supply Module LEDs
1
The following table describes the power module supply LEDs and their states.
Table 9: Power Supply Module LEDs
No power to all power supplies
Power supply module failure
Includes overvoltage, overcurrent, overtemperature,
and fan failure
Power supply module warning events
Power supply continues to operate.
With high temperature, high power, and slow fan
Power is present.
3.3 VSB on (power supply module off)
Power supply module is OK and on.
Fan Modules
The Firepower 4100 requires six fan modules, which are hot-swappable. They are installed in the rear of the
chassis. The system supports operation with a single fan failure (N+1 fan redundancy), but do not run the
system for an extended amount of time without all fan modules installed. Keep removal and replacement time
at three minutes. Remove and replace one fan module at a time.
If you remove a fan or a fan fails, the other fans operate at full speed, which can be noisy.
Overview
20
Amber FAIL LED
2
Green OK LED
Amber LED (Fail
Green LED (OK Status)
Status)
Off
Off
On
Off
1 Hz flashing
Off
Off
1 Hz flashing
Off
On
Overview