Cisco 12010 series Maintenance Manual page 43

Chapter 7 Maintaining the Router
Use the following procedure to remove and replace a DC PEM.
You cannot mix PEM types within the chassis. If you are replacing a 2400 W PEM
Caution
from an old system with a new, 2800 W PEM, you must replace both the PEMs
and the DC PDUs (see
perform the upgrade. Be sure to notify the system administrator and other
appropriate personnel that all routing traffic stops while the upgrade takes place.
Set the power switch to the off (0) position.
Step 1
Power off the circuit breaker assigned to the PEM you are removing.
Step 2
Warning To ensure that power remains off while you are performing this procedure, tape
the circuit breaker switch in the off (0) position.
Remove the PEM from the chassis
Step 3
a.
b.
c.
The DC PEM weighs approximately 14 pounds (6.35 kg). Use two hands to
Warning
remove the power supply.
Figure 7-24 Removing a DC PEM
Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
OL-11496-01
Removing and Replacing AC and DC Power Subsystem Components
Table 7-1 on page
Loosen the captive screw on the ejector lever.
Pivot the lever down to eject the PEM from its bay.
Slide the PEM out of its bay while supporting it with your other hand.
7-29). You must shut down the router to
(Figure 7-24):
7-43