Juniper mx240 Hardware Manual page 378

MX240 3D Universal Edge Router Hardware Guide
348
Turn on the power to the external management device.
4.
Switch on the dedicated customer-site circuit breakers. Follow the ESD and safety
5.
instructions for your site.
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
6.
ESD points on the chassis.
Move the AC input switch on the chassis above the AC power supply or the DC circuit
7.
breaker on each DC power-supply faceplate to the off
Check that the AC or the DC power supply is correctly installed and functioning
8.
normally. Verify that the
not lit.
NOTE: 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.
If any of the status LEDs indicates that the power supply is not functioning normally,
repeat the installation and cabling procedures.
On the external management device connected to the Routing Engine, monitor the
9.
startup process to verify that the system has booted properly.
NOTE: 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. Normally, the router boots from Junos OS on the
CompactFlash card.
After turning on a power supply, wait at least 60 seconds before turning
it off.
and LEDs light steadily, and the
AC OK DC OK
command display—to indicate that the power supply is
position.
(—)
PS FAIL
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