Manual

Chapter 5 Maintaining the Router
Removing and Replacing a DC Power Entry Module
5-18
Cisco XR 12404 Router Installation Guide
OL-13830-02
Step 1 Power off the faulty PEM.
Step 2 Power off the circuit breaker assigned to the DC power source.
Step 3 Loosen the three captive screws that secure the PEM to the chassis.
Step 4 Remove the PEM from the chassis using the finger grips to pull it out.
Warning A DC PEM weighs approximately 11.0 lbs. (4.98 kg.). Use both hands to remove
it from the chassis.
Figure 5-11 DC PEM and PDU Components
Tip If you plan to return the defective PEM to the factory, repackage it in the shipping
container you received with the replacement PEM.
1 DC PDU 5 On/Off switch
2 DC PEM 6 PDU captive screws
3 PEM captive screws 7 PDU terminal block
4 Status LEDs
INPUT
– 48/60V
35A
66295
INPUT
OK
OUTPUT
FAIL
OUTPUT
OK
5
6
4
3
7
1 2 3
todd.book Page 18 Monday, March 16, 2009 2:47 PM