Powering On The M120 Router; Figure 59: Connecting Dc Power To The M120 Router - Juniper M120 Hardware Manual

M120 Multiservice Edge Router Hardware Guide
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Powering On the M120 Router

170

Figure 59: Connecting DC Power to the M120 Router

DC Power Electrical Safety Guidelines for the M120 Router on page 347
Electrical Specifications for the M120 DC Power Supply on page 100
M120 DC Power Supply Description on page 72
M120 Power Supply LEDs on page 73
To power on the router:
Verify that the power supplies are fully inserted in the chassis and that the captive
1.
screws on their faceplates are tightened.
For each power supply on an AC-powered router, verify that the source power cord is
2.
securely inserted into the appliance inlet. For each power supply on a DC-powered
router, verify that the source power cables are connected to the appropriate terminal:
the positive (+) source cable to the return terminal (labeled
(–) source cable to the input terminal (labeled
Verify that an external management device is connected to one of the Routing Engine
3.
ports on the craft interface (
about connecting management devices, see
Management and Alarm Devices" on page
Turn on the power to the external management device.
4.
For the DC power supply, switch the circuit breaker on one of the power supplies to
5.
the on position ( ). For the AC power supply, move the power switch to the standby
|
–48V ).
AUX , CONSOLE , or ETHERNET
"Connecting the M120 Router to
153.
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) and the negative
RETURN
). For more information