User's Manual

3-8

Cisco Catalyst 4900M S witch Inst allati on Guide

78-18350- 0 2

Chapter 3 Installing the Swi tch

Connecting Power to the Cataly st 490 0M Switch

Figure 3-4 Grounding Pad Location

Warning

The plug-socket combi nation m ust b e acce ssible at all time s bec ause i t serv es as the main

disconnecting de vice.

Statemen t 101 9

Step 2 Plug the power cords into the power supplies . Refer to Figure 3-5 for the plug location.

Figure 3-5 AC- Input Powe r Supply

Step 3 Connect the other end of the power cords to an AC power source. If both power supplies will be used,

make sure they are on different source AC circuits.

Step 4 Turn the power switches to the ON position.

Step 5 Verify power supply op eration by looking at th e power supply LEDs:

• The INPUT OK LED is lit green when the source AC voltage is within operating limits.

• The OUTPUT OK LED is lit green w hen the measured DC output f rom the power supply is within

operating limits.

1 Grounding pad

232131

1 Captive screw 4 AC power connection

2 Handle 5 INPUT O K LED

3 On/off switch 6 OU TPUT OK LED

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2 2

5 6