Disconnecting Dc-Input Power From A Cisco Ubr7246Vxr Router - Cisco NPE-175 Installation And Configuration Manual

Chapter 7 NPE-G1 and NPE-G2 Installation and Configuration Information
Repeat this step for the –V lead and the ground lead.
Step 5
Note
Step 6 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

Disconnecting DC-Input Power from a Cisco uBR7246VXR Router

To disconnect DC-input power from a Cisco uBR7246VXR router, complete the following steps.
Warning 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
Warning 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.
Step 1
Ensure that no current is running through the –V and +V leads. To ensure that all power is off, locate the
Step 2
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
Step 3
strain-relief cover that secures the –V and the +V leads to the power supply faceplate. See
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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.
"Removing the NPE or NSE-1" section on page
Network Processing Engine and Network Services Engine Installation and Configuration
Removing the Network Processing Engine
7-16.
Figure 7-4.
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