Router Installation Guide

Chapter 5 Maintaining the Router
Removing and Replacing a DC PDU
5-22
Cisco XR 12404 Router Installation Guide
OL-13830-02
Step 1 Power off both PEMs (item 5 in Figure 5-12).
Figure 5-12 DC PEM and PDU Components
Step 2 Power off the circuit breakers assigned to the DC power source.
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
I
N
P
U
T
–
4
8
/
6
0
V
3
5
A
66295
IN
P
U
T
O
K
O
U
T
P
U
T
F
A
IL
O
U
T
P
U
T
O
K
5
6
4
3
7
1 2 3
todd.book Page 22 Tuesday, July 24, 2007 3:54 PM