Juniper MX480, Руководство по оборудованию

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6.
Insert the two screws at the top of the bracket and tighten each partially.
Two screws are needed for mounting the bracket on the center of the chassis. You
do not need the third screw.
7.
Tighten the two screws completely.
8.
Repeat the procedure for the other bracket.
Tools Required to Install the MX480 Router with a Mechanical Lift
To install the router, you need the following tools:
• Mechanical lift
•
Phillips (+) screwdrivers, numbers 1 and 2
•
7/16-in. (11 mm) nut driver
• ESD grounding wrist strap
Removing Components from the MX480 Router Before Installing It with a Lift
To make the router light enough to install with a lift, you must first remove most
components from the chassis. The procedures for removing components from the chassis
are for initial installation only, and assume that you have not connected power cables
to the router. The following procedures describe how to remove components from the
chassis, first from the rear and then from the front:
1.
Removing the Power Supplies Before Installing the MX480 Router with a
Lift on page 178
2.
Removing the Fan Tray Before Installing the MX480 Router with a Lift on page 179
3.
Removing the SCBs Before Installing the MX480 Router with a Lift on page 180
4.
Removing the DPCs Before Installing the MX480 Router with a Lift on page 181
5. Removing the FPCs Before Installing the MX480 Router with a Lift on page 182
Removing the Power Supplies Before Installing the MX480 Router with a Lift
Remove the leftmost power supply first and then work your way to the right. To remove
the AC or DC power supplies for each power supply (see
Figure 48 on page 179 ):
1.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to an approved site ESD grounding point. See the instructions for your site.
2.
On an AC-powered router, switch the AC input switch on each power supply to the
off (
O
) position. On a DC-powered router, Move the DC circuit breaker on each DC
power supply to the off (
O
) position.
We recommend this even though the power supplies are not connected to power
sources.
Copyright © 2019, Juniper Networks, Inc. 178
MX480 Universal Routing Platform Hardware Guide