Replacing A Dc Power Supply - Juniper M10i Hardware Manual

M10i Internet Router Hardware Guide
5.
NOTE: After powering off a power supply, wait at least 60 seconds before turning it
back on. After powering on a power supply, wait at least 60 seconds before turning
it off.
If the router is completely powered off when you power on the power supply, the
Routing Engine boots as the power supply completes its startup sequence. If the
Routing Engine finishes booting and you need to power off the router again, first
issue the CLI
AC Power from the Router"
Router"
After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as LEDs on the power supply and
indicate that the power supply is functioning normally. Ignore error indicators that
appear during the first 60 seconds.
6.
7.

Replacing a DC Power Supply

A DC-powered router has two or more load-sharing DC power supplies. Each power
supply is hot-removable and hot-insertable, as described in
(FRUs)"
Supply"
To replace a DC power supply, perform the following procedures:
112
Replacing Power System Components
Press the power switches on the faceplates of two power supplies to the
position. When the power supply has powered on successfully, the green
OUTPUT OK LED lights steadily.
request system halt
on page 111 or
on page 117.
Press the power switch on the remaining power supplies to the
and observe the LEDs on the power supply faceplate. They should light as
described in the previous step.
If the LEDs are not lit in the appropriate pattern after 60 seconds, repeat the
procedures in
"Installing an AC Power Supply"
in this procedure.
On the external management device connected to the Routing Engine, monitor
the startup process to verify that the system has booted properly.
on page 3. For more information about DC power supplies, see
on page 21.
Removing a DC Power Supply
Installing a DC Power Supply
command. For more information, see
"Disconnecting DC Power from the
show chassis
on page 109 and the previous steps
on page 113
on page 114
( )
ON |
"Disconnecting
commands—to
ON ( | ) position
"Field-Replaceable Units
"DC Power