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Cisco Catalyst 4900M Switch Installation Guide
78-18350-02
Chapter 3 Installing the Switch
Connecting DC-Input Power to the Catalyst 4900M Switch
CautionTo prevent short circuit or shock hazard after wiring the DC-input power supply, you must reinstall the
terminal block cover.
Figure 3-9Reinstalling the Terminal Block Cover
Step 10Remove any safety flag and lockout devices or any tape from the source DC circuit breaker switch
handle, and restore power by moving the circuit breaker switch handle to the on (|) position.
Step 11Turn the 1000 W DC-input supply on/off switch to ON.
Step 12Verify 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 provided by the power supply are within
specifications.
1Terminal block cover 2Terminal block
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