Cisco 12010 series Maintenance Manual page 52

Removing and Replacing AC and DC Power Subsystem Components
Disconnect the DC power cables from their terminals in the following order and
Step 7
note the color of each cable
a.
b.
c.
d.
e.
To prevent injury and damage to the equipment, always remove the source DC
Warning
power cables and ground from the power shelf terminals in the following order:
(1) negative (–), (2) positive (+), (3) ground.
Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
7-52
Negative cables first.
Positive cables next.
Ground cable last.
Repeat steps a, b, and c for the other PDU.
Go to Step 8.
(Figure 7-28):
Chapter 7 Maintaining the Router
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