Cisco Network Device 2800 Introduction Manual page 163

Remove the power supply retention screw. See
Step 3
Figure 34
1 Power supply
2 Retention screw location
Slide the power supply toward the fan and toward the system board, and then lift it out.
Step 4
OL-5792-04
Power Supply Retention Screw
Installing and Upgrading Internal Modules in Cisco 2800 Series Routers
Figure 34.
1
3 Ribbon Cable
Replacing the Power Supply
2
3
35