User's Manual

3-13

Cisco Catalyst 490 0M Switch Ins talla tion Guid e

78-18350-02

Chapter 3 Installing the Switch

Connecting DC-Input Power to the Catalyst 4900M Switch

Caution To prevent short circuit or shock hazard after wiring the DC-input power supply, you must reinstall the

terminal block cover.

Figure 3-9 Reinstalling the Terminal Block Cover

Step 10 Remove any safety flag and loc kout devices or any tape from the sou rce DC circuit breake r switch

handle, and restore power by moving the circuit breaker switch handle to the on (|) position.

Step 11 Turn the 1000 W DC-input suppl y on/off switch to ON.

Step 12 Verify that the power supply operation is correct by looking at the power supply front panel power supply

LEDs:

• The INPUT OK LED is green when the source DC voltage measured at the power supply is within

specifications.

• The OUTPUT OK LED is green when the voltages pr ovided by the power supply a re within

specifications.

1 Terminal block cover 2 Termin al blo ck

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