Juniper EX9214 Hardware Manual page 179

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NOTE: After powering off a power supply, wait for at least 60 seconds
before turning it back on. After powering on a power supply, wait for at
least 60 seconds before turning it off.
If the system 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 system again, first issue the CLI
After a power supply is powered on, it can take up to 60 seconds for status
indicators—such as the status LEDs on the power supply and the
show chassis
functioning normally. Ignore error indicators that appear during the first
60 seconds.
On the external management device connected to the Routing Engine, monitor the
12.
startup process to verify that the system has booted properly.
Installing a DC Power Supply in an EX9204 Switch
Installing a DC Power Supply in an EX9208 Switch
Installing a DC Power Supply in an EX9214 Switch on page 185
Chapter 12: Connecting the Switch to Power
command display—to indicate that the power supply is
command.
request system halt
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