5. Slide the Routing Engine into the SCBE2 until you feel resistance and then press the
faceplate of the Routing Engine until it engages the connectors.
6. Press both of the ejector handles inward to seat the Routing Engine.
7. Tighten the captive screws on the top and bottom of the Routing Engine.
8. Connect the management device cables to the Routing Engine.
Powering On the MX240 Router
To power on the MX240 router:
1. Verify that the power supplies are fully inserted in the chassis.
2. Verify that each AC power cord is securely inserted into its appliance inlet.
3. Verify that an external management device is connected to one of the Routing Engine
ports (AUX, CONSOLE, or ETHERNET).
4. Turn on the power to the external management device.
5. Switch on the dedicated customer-site circuit breakers. Follow the ESD and safety
instructions for your site.
6. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
7. Move the AC input switch on the chassis above the AC power supply or the DC circuit
breaker on each DC power-supply faceplate to the off (—) position.
8. Check that the AC or the DC power supply is correctly installed and functioning
normally. Verify that the AC OK and DC OK LEDs light steadily, and the PS FAIL LED is
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 command display—to indicate that the power supply is
functioning normally. Ignore error indicators that appear during the first
60 seconds.
Copyright © 2017, Juniper Networks, Inc.370
MX240 3D Universal Edge Router Hardware Guide
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