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Installing and Upgrading Internal Modules in Cisco 2800 Series Routers
OL-5792-04
Replacing the Power Supply
Removing the Existing Power Supply
To remove the power supply from a Cisco 2821 or a Cisco 2851 router, perform the following steps:
Step 1 Remove the bezel from the front of the router, as follows:
a. Make sure that the Compact Flash Ejector pin is in a position flush to the bezel. There is an
upward-facing arrow located at the top and center of the front bezel. Grasp the bezel at the location
of the arrow. See Figure 41.
Figure 41 Where to Hold Front Bezel to Remove It on Cisco 2821 and Cisco 2851 Routers
.
b. Pull the top of the bezel 1/8 to 1/4 inch (3 to 8 mm) away from the chassis at the center. See
Figure 42.
c. While you hold the bezel away from the chassis, slide the bezel toward the input-power side until it
comes free (about 1/2 inch [12 mm]).
121069
Do Not Remove During Network Operation
COMPACT FLASH
0
1
OPTIONAL RPS INPUT
SYS
PWR
AUX/
PWR
SYS
ACT CF
12V 18A
-48V 8A
CONSOLE
AUX
100-240V~ 8A
50/60 Hz
Do Not Remove During Network Operation
COMPACT FLASH
SYS
PWR
AUX/
PWR
SYS
ACT CF
0
1
1