Cisco Systems 7500 Series manual OL-5008-03 B0

Chapter 5 Maintaining Your Cisco 7505 Router

Maintenance Procedures for the Cisco 7505

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 Figure 5-8.

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 Figure 5-9c and slide it into the bottom of the chassis. Use the handles to push the supply all the way into the chassis until the ears on both sides are flush against the chassis frame. (See Figure 5-9b.)

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 “Removing and Replacing the Cisco 7505 Power Harness Cover” section on page 5-7.)

Step 6 Replace the fan tray. (Follow Step 1 through Step 5 in the procedure for replacing the fan tray in the “Removing and Replacing the Cisco 7505 Fan Tray” section on page 5-5.)

Step 7 Replace the cover panel. (Follow Step 1 through Step 4 in the procedure for replacing the cover panel in the “Removing and Replacing the Cisco 7505 Cover Panel” section on page 5-3.)

Step 8 For AC-input power supplies: On the interface processor side of the power supply, replace the cable 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.

Step 9 For DC-input power supplies: To provide strain relief for the DC-input cable, replace the nylon cable tie (that you removed in Step 2 of the previous procedure) with a new nylon cable tie.

This completes the power supply replacement procedure.

	Cisco 7500 Series Installation and Configuration Guide
OL-5008-03 B0		5-15