Disconnecting And Connecting Power; Disconnecting Power From The Router; Figure 103: Installing A Power Supply - Juniper Internet Router M160 Hardware Manual

M160 Internet Router Hardware Guide
If the router is completely powered down 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 down the router
again, first issue the CLI
"Disconnecting Power from the Router" on page 200.
After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as LEDs on the power supply,
messages on the craft interface LCD—to indicate that the power supply is
functioning normally. Ignore error indicators that appear during the first 60 seconds.

Figure 103: Installing a Power Supply

Disconnecting and Connecting Power

The power cables from the external power sources connect to terminal studs on the
circuit breaker box located at the lower right rear of the chassis. To disconnect or
connect power to the router, perform the following procedures. Also follow these
procedures when replacing the power cables, grounding cable, or both:

Disconnecting Power from the Router

To disconnect power from the router, follow this procedure (see Figure 104):
1.
200
Replacing Power System Components
request system halt
Disconnecting Power from the Router on page 200
Connecting Power to the Router on page 202
On the console or other management device connected to the master Routing
Engine, enter CLI operational mode and issue the following command to shut
down the router software. (If two Routing Engines are installed, also issue the
command on the backup Routing Engine.)
user@host> request system halt
command. For more information, see
commands, and
show chassis