Replacing An M120 Dc Power Supply; Removing An M120 Dc Power Supply - Juniper M120 Hardware Manual

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Replacing an M120 DC Power Supply

Removing an M120 DC Power Supply

Copyright © 2018, Juniper Networks, Inc.
Insert the power cord plugs into an AC power source receptacle. Verify that the power
13.
cord does not block access to router components or drape where people could trip
on it.
NOTE: Each AC power supply has two AC appliance inlets. Each power
supply must be connected to a dedicated AC power feed. For 100-120
VAC, both inlets are used. For 200-240 VAC, only the top inlet is used. For
information about site power preparations, see
Requirements" on page
to power and ground, see
Router" on page
Switch the power switch on the power supply faceplate to the on position (
14.
that the status LED on the power supply faceplate blinks, then lights steadily
approximately one minute after you switch on the power switch.
M120 AC Power Supply Description on page 72
Maintaining the M120 Power Supplies on page 277
Electrical Specifications for the M120 AC Power Supply on page 95
In the DC power configuration, the router contains two DC power supplies (see
on page 72), located in the right rear of the chassis in slots
A single DC power supply provides sufficient power for a fully configured router.
Each power supply (AC or DC) is hot-insertable and hot-removable.
NOTE: To maintain proper cooling and prevent thermal shutdown of the
operating power supply unit, each power supply slot must contain either a
power supply or a blank panel. If you remove a power supply, you must install
a replacement power supply or a blank panel shortly after the removal.
Removing an M120 DC Power Supply on page 245
Installing an M120 DC Power Supply on page 248
The power supplies are located at the rear of the chassis to the right of the
power supply weighs approximately 8.4 lb (3.8 kg).
Chapter 28: Replacing Power System Components
88. For information about connecting the router
"Connecting Power to an AC-Powered M120
167.
"M120 Router Power
). Verify
|
Figure 20
and (left to right).
PEM0 PEM1
. Each
CB1
245