B-3
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-02
Appendix B Maintaining the Router
Accessing the System Board
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
Remove the screws located on the top of the chassis. Note that the chassis is comprised of two sections:
top and bottom.
Step 5
Holding the chassis with both hands, position it as shown in
Figure B-1
.
Step 6
Slide the top section away from the bottom section as shown in
Figure B-2
.
Figure B-1
Holding Chassis for Cover Removal
Figure B-2
Removing Chassis Cover
Step 7
When the top cover is off, set it aside.
Figure B-5
shows the layout of the system board.
Note
The system board layout in
Figure B-5
shows the boot ROM in position U22. On the
Cisco 261x, the boot ROM is in position U23.
POWER
RPS
ACTIVITY
H11658
Cisco 2600
SERIES
35392
POWER
RPS
ACTIVITY
Cisco 2600
SERIES
