Cisco ASR 1000 series Hardware Installation Manual page 504

Removing and Replacing the Cisco ASR 1004 Router Power Supplies
If you remove a power supply from a system that has four power supplies that are connected and powered
Caution
on, the system can run only for a maximum of five minutes before shutting down. However, because the
fans and power elements are independent within the power supply, the replacement power supply does
not have to be energized within five minutes. The only requirement is that the power supply be installed
in the chassis in order to energize the fans and maintain proper system cooling.
Step 8 Grasping the power supply handles, pull the power supply from the chassis.
Replace the DC power supply within five minutes.
Step 9
This completes the procedure of removing a DC power supply from the Cisco ASR 1004 Router.
Replacing the DC Power Supply in Cisco ASR 1004 Router
The color coding of the DC input power supply leads depends on the color coding of the DC power
Note
source at your site. Typically, green or green/yellow is used for ground (GND), black is used for negative
(–) terminal and red is used for the positive (+) terminal. Make certain the lead color coding you choose
for the DC input power supply matches lead color coding used at the DC power source.
When you install the unit, the ground connection must always be made first and disconnected last.
Warning
Statement 1046
To install the DC power supply, follow these steps:
Make certain that the chassis ground is connected before you begin installing the DC power supply.
Step 1
Grasp the DC power supply by the two handles and carefully slide it into the chassis. Make sure you
Step 2
align the rear connector to the backplane until it is fully seated.
Tighten the captive screws on the power supply.
Step 3
Locate the power supply terminal block and remove the plastic cover from the terminal block:
Step 4
a.
b.
Before you continue to install the terminal block ground wires, stop and perform Step 5 to prevent any
Caution
contact with metal lead on the ground wire and the plastic cover.
You must wrap the positive and negative cables with sleeving. Take each ground wire and cover the area
Step 5
from the lug to the wire with heavy shrink sleeving (see
Attach the GND wire first and follow this order:
Step 6
a.
b.
c.
Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
14-74
Unscrew and remove the two #10 screws.
Slide the cover off the terminal block towards the right.
Flat Washer
Ground lug with grounding wire
KEPnut screw
Chapter 14 Removing and Replacing FRUs from the Cisco ASR 1000 Series Routers
Figure 14-44).
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