Installation guide

7-13
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-08
Chapter 7 NPE-G1 and NPE-G2 Installation and Configuration Information
Removing the Network Processing Engine
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
Step 1 At the rear of the router, check that the power switch on the power supply is in the off (O) position.
Step 2 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.
Step 3 For a Cisco uBR7200 series router, 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 Figure 7-4.