Figure 64: Connecting DC Power Cables
Related
Documentation
DC Power Electrical Safety Warnings for Juniper Networks Devices on page 256•
• M7i Router DC Power Supply Specifications on page 87
• M7i DC Power Electrical Safety Guidelines on page 255
Replacing an M7i AC Power Supply
An AC-powered router has one or two load-sharing, redundant AC power supplies. Each
power supply is hot-removable and hot-insertable, as described in “M7i Field-Replaceable
Units (FRUs)” on page 135. For full redundancy, two power supplies are required. If a power
supply stops functioning for any reason, the remaining power supply instantly begins
providing all the power the router needs for normal functioning, and can provide full
power indefinitely. For more information about AC power supplies, see “M7i AC Power
Supply” on page 60.
To replace an AC power supply, perform the following procedures:
•
Removing an M7i AC Power Supply on page 177
•
Installing an M7i AC Power Supply on page 179
Removing an M7i AC Power Supply
Before removing the AC power supply from an M7i router with only one power supply,
you must power off the router. See “Powering Off the M7i Router” on page 126. The AC
power supplies are located at the bottom rear of the chassis, as shown in Figure 6 on
page 12. Each AC power supply weighs approximately 12 lb (5.5 kg).
177Copyright © 2019, Juniper Networks, Inc.
Chapter 25: Replacing Power System Components