Cisco XR 12406 Installation Manual page 199

Chapter 5 Maintaining the Router
Disconnect the DC power leads from the PDU power connector blocks in the
Step 5
following order
a.
b.
c.
d.
To prevent injury and damage to the equipment, always remove the source DC
Warning
power leads and ground from the power shelf terminals in the following order:
(a) negative (–), (b) positive (+), (c) ground.
Figure 5-21
4
1
2
OL-13831-01
(Figure 5-21):
Negative lead from the top port.
Positive lead from the middle port.
Ground lead from the bottom port.
Repeat these steps for the second power connector block.
Disconnecting the DC Power Leads
Negative terminal port
Positive terminal port
P O
W E
R A
+
G N
D
3 Ground terminal port
4
Terminal port connector screws
Cisco XR 12406 Router Installation Guide
Removing and Replacing a DC PDU
1
2
3
5-35