5-28
Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-03
Chapter 5 Installing and Upgrading Internal Modules and FRUs
Replacing Power Supplies and Redundant Power Supplies
Figure 5-23
Proper Installation of PVDM2 in the Adapter
Replacing Power Supplies and Redundant Power Supplies
Except for the Cisco 2901 router, all Cisco 2900 series routers have replaceable power supply modules
and external redundant power supplies (RPS). The Cisco 3900 series routers cannot use an external RPS,
and instead use one or two (optional) internal power supplies. All of the internal power supplies for the
2900 series and the 3900 series are modular and do not have internal cabling. These modular power
supplies can be removed or installed using only a screwdriver.
•
Replacing the Cisco 2901 Router Power Supply, page 5-30
•
Replacing the Cisco 2911 Router Power Supply, page 5-32
•
Installing and Removing the Cisco 2911 Router Optional DC Power Supply, page 5-33
•
Installing the Cisco 2911 Router Power Supply Blank, page 5-34
•
Replacing the Cisco 2911 Router Redundant Power Supply, page 5-36
•
Replacing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Power Supply, page 5-36
–
Inserting POE supply in an Ethernet Switch Network Module, page 5-39
•
Installing and Removing the Cisco 2921, Cisco 2951, or Cisco 3900 Series Optional DC Power
Supply, page 5-40
•
Installing and Removing a Redundant Power Supply Adapter, page 5-42
Note
Replace power supplies with the types shown in
Table 5-2
.
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