Hardware Installation
48
6.7
Field Replaceable Units
6.7.1
Fan Unit
The 4036/2036 switch has a hot swappable Fan Unit with three fans that are used to maintain
proper cooling, as shown.
In normal operation, the two fans work at 50% utilization.
In case of fan failure or high temperature detection, the fans go into Turbo mode. In case of fan
failure, the fan drawer LED and the PS/FAN LED on the rear panel blink.
When removing the fan unit, the system can continue to function up to 5 minutes before a new
fan unit is installed.
Figure 40: Replacing the Fan
To replace the hot-swappable Fan module
1.
Release the captive fasteners at each side of the fan and gently remove it from its slot.
2.
Position the rear of the new fan in the slot.
3.
Holding the fan level, slide it into the slot until it meets resistance at the chassis connector.
It should slide smoothly and easily.
4.
Push the module further until it is completely seated.
5.
Use the captive fasteners at each side of the fan to secure it in place.
6.7.2
Power Supplies
The 4036/2036 switch has two identical hot swap Power Supplies in the side bays of the unit
chassis in order to maintain proper cooling, as shown.
The 4036/2036 switch supports current sharing operation of the two power supplies, if
applicable.
