9. On each of the DC power supplies, switch the DC circuit breaker to the center position
before moving it to the On (—) position.
NOTE: The circuit breaker might bounce back to the Off O) position if you
move the breaker too quickly.
If any of the status LEDs indicates that the power supply is not functioning normally,
repeat the installation and cabling procedures. See Connecting DC Power to an EX9204
Switch, “Connecting DC Power to an EX9208 Switch” on page 183, or Connecting DC
Power to an EX9214 Switch.
10. Verify that the BREAKER ON LED glows steady green.
11. Verify that the PWR OK LED glows steady green, indicating the power supply is correctly
installed and functioning normally.
If the power supply is not functioning normally, repeat the installation and cabling
procedures.
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 asthe powersupply completes its startup
sequence. If the Routing Engine finishes booting and you need to power
off the system again, first issue the CLI request system halt command.
After a power supplyis powered on, it can take up to 60 seconds forstatus
indicators—such as the status LEDs on the power supply and the
show chassis command display—to indicate that the power supply is
functioning normally. Ignore error indicators that appear during the first
60 seconds.
12. On the external management device connected to the Routing Engine, monitor the
startup process to verify that the system has booted properly.
Related
Documentation
• Installing a DC Power Supply in an EX9204 Switch
• Installing a DC Power Supply in an EX9208 Switch on page 218
• Installing a DC Power Supply in an EX9214 Switch
189Copyright © 2017, Juniper Networks, Inc.
Chapter 12: Connecting the Switch to Power
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