Cisco Systems NPE-225 사용자 설명서

Repeat this step for the –V lead and the ground lead.

The color coding of the DC-input power supply leads depends on the color coding of the DC 
power source at your site. Typically, green or green and yellow are used for ground. Make certain 
that the lead color coding you choose for the DC-input power supply matches the lead color 
coding used at the DC power source.

Repeat Step 1 through Step 6 if a second power supply is installed.

This completes the procedure for disconnecting DC-input power from a Cisco 7200 VXR router. Go to 
the 

. 

To disconnect DC-input power from a Cisco uBR7246VXR router, complete the following steps. 

Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure 
that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker 
on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and 
tape the switch handle of the circuit breaker in the OFF position. Statement 322

When you install the unit, the ground connection must always be made first and disconnected last. 
Statement 42

At the rear of the router, check that the power switch on the power supply is in the off (O) position.

Ensure that no current is running through the –V and +V leads. To ensure that all power is off, locate the 
circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off 
position, and tape the switch handle of the circuit breaker in the off position.

Use a 7-mm wrench or nut driver (or adjustable wrench) to loosen and remove the two M4 nuts from the 
strain-relief cover that secures the –V and the +V leads to the power supply faceplate. See 

.