3-4
Cisco 3200 Series Router Hardware Upgrade Guide
OL-15983-01
Chapter 3 Replacing Cards in the Cisco ISR 3270 Rugged Enclosure
Card Replacement Process
Removing the I/O End Cap
To remove the I/O end cap, follow these steps:
Step 1 Use a 3/8-inch socket wrench to loosen the four 1/4-20 bolts on the end cap using a torque range of 58
to 68 in-lb.
Note If a protective end cap cover (see Figure 2-16) is used to provide weatherproof protection for the
ports on the I/O end cap, loosening the four 1/4-20 mounting bo lts on the protective end cap
allows you to remove the protective end cap and the I/O end cap from the extrusion.
Step 2 Carefully pull off the end cap enough to give you enough room to disconnect the power cable. Figure 3-3
shows the cables.
Figure 3-3 Disconnecting the Power Cable
Step 3 Disconnect the power cable from the end cap.
Step 4 Slowly pull out the USB, FE 0, FE 1, GE 0, and GE 1 cables (which you already disconnected fro m the
card stack when you removed the antenna end cap) from beneath the card st ack to free up the I/O end cap.
Step 5 Place the end cap on your work surface.
270467

6 5 4 3

1
2
1GE 0 2GE 1
3FE extender cable 4FE cable
5USB cable 6Power cable