B-4
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-02
Appendix B Maintaining the Router
Accessing the System Board
Removing the Chassis Cover on Cisco 2691
Complete the following procedure to remove the chassis cover:
Step 1
Power OFF the router and unplug the AC power cord.
Step 2
Disconnect all network interface cables from the rear panel.
Warning
Before opening the chassis, disconnect the telephone-network cables to avoid contact with
telephone-network voltages. To see translations of the various warnings that appear in this
publication, refer to the
Regulatory Compliance and Safety Information
document that
accompanied this device.
Step 3
Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the
equipment end of the wrist strap to the metal back plate of the chassis.
Step 4
Place the router on a flat surface. Remove the five screws located on top of the cover.
Step 5
Rotate the cover up to a 45-degree angle. (See part 1,
Figure B-3
.)
Step 6
Slide the cover to the side until the tabs are free from the slots. (See part 2,
Figure B-3
.)
