Cisco 12008, Installation And Configuration Manual, Page: 285 / 382

Maintaining the Cisco 12008 7-5
Installing and Removing a Blank Filler Panel
Installing and Removing a Blank Filler Panel
The Cisco 12008 must be fully enclosed to ensure that cooling air is circulated properly
throughout the interior of the router. Fully enclosing the router prevents overheating of
electronic components in the upper and lower card cages and suppresses EMI radiation.
To cover any vacant slot in the upper card cage of the Cisco 12008, you must install a blank
filler panel (see Figure 7-2).
To install a blank filler panel, perform the following steps:
Step 1
Grasp the filler panel and position it vertically for insertion into the vacant slot.
Step 2 Slide the filler panel into the slot until its faceplate is flush against the top and
bottom of the card cage.
Step 3
Tighten the captive installation screws on the faceplate of the filler panel to
secure it in place.
If you need to install a circuit board in place of the blank filler panel, remove the panel by
performing the reverse of the procedure outlined above.