Removing A Fan Tray; Figure 28: Removing A Cb Before Installing The M120 Router - Juniper Networks Hardware Manual

Removing a Fan Tray

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CAUTION: Do not stack hardware components on one another after you
remove them. Place each component on an antistatic mat resting on a
stable, flat surface.
Repeat the procedure for the second CB.
7.

Figure 28: Removing a CB Before Installing the M120 Router

In the front of the chassis, the upper fan tray is located above the FPC card cage, and the
lower fan tray is located below the FPC card cage. Each fan tray weighs about 7 lb (3.2 kg).
In the rear of the chassis, the upper fan tray is located above the rear card cage, and the
lower fan tray is located below the rear card cage. Each fan tray weighs about 5.3 lb (2.4
kg).
To remove any fan tray (see Figure 29 on page 64 and Figure 30 on page 65, which
illustrate the upper front fan tray and lower rear fan tray):
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point. See the instructions for your site.
If removing the lower front fan tray, simultaneously pull the two releases labeled PULL
2.
on the cable management system. Lift it up and outward to lock it in place.
Loosen the captive screw on each side of the fan tray faceplate.
3.
Chapter 7: Installing the M120 Router Without a Mechanical Lift
63