Specifications

Network Processing Engine Replacement Instructions 23
Powering Down the Router and Disconnecting Input Power
Step 3 Using a 3/16-inch flat-blade screwdriver, loosen the screw below the +48V lead
receptacle and pull the lead from the connector. (For Cisco 7200 series routers, see
Figure 13. For Cisco uBR7200 series routers, see Figure 14.)
• For Cisco 7200 series routers, repeat this step for the –48V lead and the ground lead.
• For Cisco uBR7200 series routers, repeat this step for the –48V lead only. Using an
8-mm wrench or nut driver (or adjustable wrench), loosen and remove the two M5
nuts that secure the two-hole-grounding lug to the grounding receptacle, and pull the
grounding lug and lead from the receptacle.
Note 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/yellow is used for ground,
black is used for +48V (return), and red or white is used for –48V. 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.
Figure 13 Disconnecting Power from a Cisco 7200 Series DC-Input Power Supply
H8619
NETWORK PROCESSING ENGINE-150
Internal fans
DC-input
power supply
DC-input receptacle
Power switch