Cisco 7500 Series Configuration Manual page 197

Chapter 5 Maintaining Your Cisco 7505 Router
Use the following procedure to replace the power supply:
Step 1 Before inserting a power supply, remove the cable retention clip from the AC receptacle on the power
supply, otherwise it can catch on the floor of the chassis during the installation. Pinch the sides of the
clip together until they clear the jackscrews. See
Warning 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.
Step 2 Hold the power supply as shown in
handles to push the supply all the way into the chassis until the ears on both sides are flush against the
chassis frame. (See
Step 3 Use a number 2 Phillips screwdriver to replace the two M4 Phillips pan-head screws to secure the two
power supply ears to the chassis frame.
Step 4 Reattach the power harness plug to the backplane receptacle. The harness plug and backplane receptacle
are polarized with notches at the top of both guide tabs (top and bottom) on the plug. Ensure that the
plug is fully seated in the receptacle.
Step 5 Replace the power harness cover. (Follow Step 1 through Step 5 in the procedure for replacing the power
harness cover in the
page 5-7.)
Replace the fan tray. (Follow Step 1 through Step 5 in the procedure for replacing the fan tray in the
Step 6
"Removing and Replacing the Cisco 7505 Fan Tray" section on page
Replace the cover panel. (Follow Step 1 through Step 4 in the procedure for replacing the cover panel in
Step 7
the "Removing and Replacing the Cisco 7505 Cover Panel" section on page
For AC-input power supplies: On the interface processor side of the power supply, replace the cable
Step 8
retention clip on the AC input port by pinching the sides of the retention clip together and letting the
ends of the retention clip snap outward into the holes in the jackscrews.
For DC-input power supplies: To provide strain relief for the DC-input cable, replace the nylon cable tie
Step 9
(that you removed in Step 2 of the previous procedure) with a new nylon cable tie.
This completes the power supply replacement procedure.
OL-5008-03 B0
Figure 5-9c and slide it into the bottom of the chassis. Use the
Figure 5-9b.)
"Removing and Replacing the Cisco 7505 Power Harness Cover" section on
Maintenance Procedures for the Cisco 7505
Figure 5-8.
5-5.)
Cisco 7500 Series Installation and Configuration Guide
5-3.)
5-15