Replacing BlackDiamond 12800 Series Chassis Components
BlackDiamond 12800 Series Switches Hardware Installation Guide
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Pre-Installation Requirements
Make sure that you have access to the back of the switch. You need the following tools and equipment
to replace a BlackDiamond 12804 PSU/fan controller:
ESD-preventive wrist strap
#1 Phillips screwdriver
#2 Phillips screwdriver
Replacement BlackDiamond 12804 PSU/fan controller
Removing a BlackDiamond 12804 PSU/Fan Controller
To remove a PSU/fan controller from the BlackDiamond 12804 switch:
1Attach the ESD-preventive wrist strap to your wrist and connect the metal end to the ground
receptacle on the front top-left corner of the switch.
2Locate the eight captive screws on the PSU/fan controller access cover at the back of the
BlackDiamond 12804 switch (see Figure 73).

Figure 73: Removing the PSU/Fan Controller Access Cover

3Using a #2 Phillips screwdriver, loosen all eight captive screws on the PSU/fan controller access
cover (see Figure 73).
4Pull the access cover away from the back of the switch.
The PSU/fan controllers are visible in the controller recess.
5Locate the four captive screws on the PSU/fan controller you are replacing (see Figure74).
BD_169
PSU/Fan
Controllers