Cisco ASR 901S Series Installation Manual page 60

Opening the Router Cover
Procedure
Step 1 To open the router cover, use the special screw driver to loosen all twelve captive screws in the order shown
in the above figure. Ensure that the screws are released from the screw thread on the router and remain on the
router cover as shown in the following figure.
Note
Figure 28: Router Cover, Showing Captive Screw
1
Step 2 After all twelve screws are loose, remove the cover. The router door is held by a cable that is affixed to the
cable bay inside the chassis as shown in the following figure.
Figure 29: View of Wall-Mounted Router With Open Cover
Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide
50
Do not forcibly remove the captive screws out of the router cover. You may need to remove the
captive screws completely only when replacing a router cover.
Captive screw loosened from the screw thread on the router
Installing the Router
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