Cisco Systems 7505 Manual De Usuario

AC receptacle

On/off switch

Cable retention 
clip

DC OK  LED

H1998

The following procedure assumes you have

already removed the chassis cover panel, the fan tray,

the power harness cover, and the power harness. If

you have not, refer to the appropriate sections in the
Cisco 7500 Series Installation and Configuration
Guide for instructions.

AC-input power supply is shown above.

Turn off the system power switch.

Before working on the chassis or

near power supplies, disconnect the power

cable on AC units or disconnect the power

at the circuit breaker on DC units.

Disconnect the power cable from the

power supply.

For the AC-input power supply: Move the

cable retention clip away from the power

cable and disconnect the power cable

from the AC receptacle.

For the DC-input power supply: Use a

wire cutter to cut the nylon cable tie that

provides strain relief for the DC power

cable. (You must replace this nylon cable

tie with a new one after the new power

supply is installed.) Remove the DC-input

cable from the terminal block.

Attach an ESD-preventive strap between

you and any unpainted chassis surface.

Disconnect the power harness plug from

the backplane receptacle by pulling the

polarized plug out of the receptacle; do

not pull on the wires.

Use a Number 2 Phillips screwdriver to

remove the two M4 x 10-mm Phillips

panhead screws that secure the power

supply ears (one on each side of the power

supply) to the chassis frame.

Using both hands, grasp both of the

power supply handles and pull the power

supply about halfway out of the bay. Then

grasp the sides of the power supply and

pull it out of the chassis.