Cisco 7000 Hardware Installation And Maintenance page 235

For the AC-input power supply, lift up the cable retention clip and remove the power cable
Step 3
from the AC receptacle.
For the DC-input power supply, loosen the captive installation screws on the terminal block
cover, lift the cover, remove the nylon ties (used for strain relief), and then remove the three
power leads from the terminal block. (See Figure 5-24.)
Figure 5-24 Removing Nylon Cable Ties and Power Leads from DC-Input Power Supply
DO NOT SHIP WITH POWER SUPPLY
INSTALLED
INPUT VOLTAGE : 40-72 V=
INPUT CURRENT : 24-13A
Use a screwdriver to loosen and remove the captive installation screw on the top of the
Step 4
supply. (See Figure 5-25.)
Grasp the power supply handle and place your other hand underneath to support the bottom
Step 5
of the supply as shown in Figure 5-26.
Pull the supply out of the bay and put it aside.
Step 6
If the power supply bay is to remain empty, install a power-supply filler plate
Step 7
(MAS-7KBLANK) over the opening and secure it with a mounting screw. This not only
protects the inner chassis from dust, but also protects the connectors in the rear of the bay,
which expose current levels when the chassis is powered ON.
FASTENER TO BE FULLY ENGAGED
BEFORE OPERATING POWER SUPPLY
Captive installation
screw
Power leads attached
to terminal block
( ) negative
( ) positive
( ) ground
Nylon ties on cable
and metal bracket
Installing and Replacing Power Supplies
Maintenance 5-231