Connecting Power To A Dc-Powered Mx240 Router With Normal-Capacity Power Supplies - Juniper MX240 Hardware Manual

7. Switch the AC input switch on each power supply to the on (|) position and observe the status LEDs
on each power supply faceplate. If an AC power supply is correctly installed and functioning normally,
the AC OK and DC OK LEDs light steadily, and the PS FAIL LED is not lit.
If any of the status LEDs indicates that the power supply is not functioning normally, repeat the
installation and cabling procedures .
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 system is completely powered off when you power on the power supply, the Routing
Engine (or RCB) 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
request system halt command.
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 command display—to indicate
that the power supply is functioning normally. Ignore error indicators that appear during
the first 60 seconds.
8. On the external management device connected to the Routing Engine, monitor the startup process to
verify that the system has booted properly.
SEE ALSO
Replacing an MX240 AC Power Supply Cord | 387
Preventing Electrostatic Discharge Damage to an MX240 Router | 467
Connecting Power to a DC-Powered MX240 Router with Normal-Capacity
Power Supplies
CAUTION:
Damage to the router might occur.
Do not mix AC and DC power supply modules within the same router.
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