Tools Required; Installing Power Supplies; Removing Power Supplies - Cisco 7000 Hardware Installation And Maintenance

Installing and Replacing Power Supplies
Warning
20 pounds.
Figure 5-23
Cable-retention clip

Tools Required

You will need a number 2 Phillips or 1/4-inch flat-blade screwdriver (whichever is appropriate) to
remove and install filler plates and to loosen or tighten the captive screw on the power supply. For
the DC-input power supply, you will need two 4-inch nylon cable ties to attach the DC-input power
cable to the bracket beneath the terminal block.

Installing Power Supplies

At initial installation, you will install the power supplies after you place the chassis in its permanent
location to avoid moving an extra 20 or 40 pounds around while setting up the chassis. Steps for
installing the power supplies are included as part of the initial installation procedure and are not
duplicated here. For power-supply installation procedures, refer to the section "Inserting Power
Supplies" in the chapter "Installing the Router." For power-supply removal procedures, refer to the
procedure that follows.

Removing Power Supplies

Redundant power supplies support OIR. If you remove one power supply, the second supply
immediately ramps up to supply full power to the system to maintain uninterrupted operation.
Always install a filler plate over an empty power supply bay to protect the connectors from
contamination.
Follow these steps to remove a power supply:
Step 1
Step 2
5-230 Cisco 7000 Hardware Installation and Maintenance
To prevent injury, use both hands to remove and install power supplies. Each weighs
Power Supply Interlock—AC-Input Power Supply Shown
Safety interlock
switch
On the power supply to be removed, turn OFF the switch. The interlock tab will retract into
the unit. (See Figure 5-23.)
Disconnect the power cable from the power source.
Locking device
in ON and
locked positions