Figure 40: Installing A Dc Power Supply - Juniper MX104 Hardware Manual

Copyright © 2014, Juniper Networks, Inc.
CAUTION: The maximum torque rating of the terminal screws on the DC
power supply is 27.4 lb-in. (3.1 Nm). The terminal screws may be damaged
if excessive torque is applied. Use only a torque-controlled driver to tighten
screws on the DC power supply terminals. Use an appropriately sized
driver, with a maximum torque capacity of 27.4 lb-in. or less. Ensure that
the driver is undamaged and properly calibrated and that you have been
trained in its use. You may wish to use a driver that is designed to prevent
overtorque when the preset torque level is achieved.
Replace the clear plastic cover over the terminals on the faceplate.
9.
Connect each DC power cable to the appropriate external DC power source.
10.
NOTE: For information about connecting to external DC power sources,
see the instructions for your site.
Switch on the external circuit breakers to provide voltage to the DC power source
11.
cable leads. Observe the system LED on the front of the router. If the DC power cable
is correctly installed and functioning normally, the system LED lights green steadily.
If the status LED indicates that the power supply is not functioning normally, repeat
the installation and cabling procedures.

Figure 40: Installing a DC Power Supply

Chapter 13: Replacing MX104 Hardware Components
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