Replacing Power System Components; Replacing A Dc Power Supply; Removing A Dc Power Supply - Juniper M7i Hardware Manual

CHAPTER 25

Replacing Power System Components

Replacing a DC Power Supply

Removing a DC Power Supply

Copyright © 2019, Juniper Networks, Inc.
Replacing a DC Power Supply on page 171
Replacing an M7i DC Power Cable on page 175
Replacing an M7i AC Power Supply on page 177
Replacing an M7i AC Power Cord on page 181
A DC-powered router has one or two load-sharing, redundant DC power supplies that
install into the rear of the router as shown in
hot-removable and hot-insertable, as described in
on page 135. When one power supply fails or is powered down, the remaining power
supplies automatically assume the entire electrical load for the router. For more
information about DC power supplies, see
To replace a DC power supply, perform the following procedures:
Removing a DC Power Supply on page 171
Installing a DC Power Supply on page 173
Before removing a DC power supply from an M7i router with only one power supply, you
must power off the router. See
supplies are located at the bottom rear of the chassis, as shown in
Each DC power supply weighs approximately 7 lb (3.2 kg).
CAUTION: Do not leave a power supply slot empty for more than a short time
while the router is operational. The power supply must remain in the chassis
for proper airflow.
Figure 6 on page
"M7i Field-Replaceable Units (FRUs)"
"M7i DC Power Supply" on page
"Powering Off the M7i Router" on page
12. Each power supply is
61.
126. The DC power
Figure 6 on page 12.
171