Cisco Systems Cisco 12008 manual Connecting Source Power to an AC-Input Power Supply

Connecting Source Power to the Power Supplies

Note You should not install two power supplies of either type unless you intend to use both units. In other words, you should not install two power supplies and power the router with only one of the units. Powering the router with a single power supply while using the other bay to “store” an inert unit may disrupt the normal flow of cooling air through the power supply bays.

Depending on the power supply type installed in your router, refer to one of the two following sections for instructions on connecting source power to the power supply.

Note Detailed instructions for installing or replacing power supplies are also contained in the configuration notes entitled Cisco 12008 Gigabit Switch Router AC-Input Power Supply Replacement Instructions (document number 78-4954-01) and Cisco 12008 Gigabit Switch Router DC-Input Power Supply Replacement Instructions (document number 78-4955-01). A configuration note accompanies each power supply that is ordered and shipped from the factory as a field-replaceable unit (FRU). These configuration notes are also available on the Cisco Documentation CD and on Cisco Connection Online (CCO).

Connecting Source Power to an AC-Input Power Supply

In the following procedure, you are assumed to have an AC-input power supply already installed in your router; you need to connect it to an AC power source. If an AC-input power supply is not already installed, perform the procedures in the earlier section entitled “Reinstalling the Power Supplies in the Router” before attempting to connect source AC power to the unit.

If you equip your router with a single AC-input power supply, install it in the bottom power supply bay.

Note All electrical connections between the power supply and the backplane are accomplished automatically when the power supply is installed in the power supply bay.

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