Cisco 7204 - VXR Router, Руководство по установке и настройке

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3-21
Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter 3 Installing the Cisco 7204
Connecting Power
Figure 3-20 Connecting AC-Input Power
Step 4 Plug the AC power supply cable into the AC power source.
Step 5
Repeat Step 1 through Step 4 for the second power supply (if present).
This completes the procedure for connecting AC-input power.
Connecting DC-Input Power
Connect a 280W DC-input power supply as follows:
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 the lead color coding you choose for the DC-input power
supply matches lead color coding used at the DC power source.
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.
Warning When installing the unit, the ground connection must always be made first and disconnected last.
Step 1
Ensure that the –48V and +48V leads are disconnected from the power source.
Step 2 Using a wire stripper, strip approximately 0.55 inch (14 mm) from the –48V, +48V, and ground leads
(refer to
Figure 3-21 ).
H6848
AC power cable
Cable-retention
clip
Hole for nylon
cable tie
Power switch
PWR OK LED