44
Installing and Upgrading Internal Modules in Cisco 2800 Series Routers
OL-5792-04
Replacing the Power Supply
Step2 Remove the two power supply retaining screws. See Figure43.
Figure43 Power Supply Retaining Screws in a Cisco2821 or Cisco 2851 Router
.
Step3 Disconnect the power output cable connector (or connectors—see note below) from the power supply.
Power supply connectors have a locking feature on the power supply end that you must release. Do not
disconnect any power cables from the system board.
Note The AC-input power supply in a Cisco 2821 or Cisco 2851 router has only one power output
cable. The DC-input power supply has two power output cables, and the ILP supply has three
power output cables that must be disconnected.
Step4 Use the integrated power supply handle to pull the power supply out through the front of the chassis. See
Figure 44.
103704
Front
Power supply
retaining screws