Removing The M320 Cbs; Removing The M320 Rear Fan Tray; Figure 44: Removing A Cb - Juniper M320 Hardware Manual

M320 Multiservice Edge Router Hardware Guide

Removing the M320 CBs

Removing the M320 Rear Fan Tray

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The router can have one or two CBs. They are located in the upper rear of the chassis in
the slots marked CB0 and
To remove the CBs (see Figure 44 on page
Place an electrostatic bag or antistatic mat on a flat, stable surface.
1.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
2.
the strap to an approved site ESD grounding point. See the instructions for your site.
Loosen the captive screws on the ejector handles on both sides of the CB faceplate.
3.
Flip the ejector handles outward to unseat the CB.
4.
Grasp the ejector handles, and slide the CB about halfway out of the chassis.
5.
Place one hand underneath the CB to support it, and slide it completely out of the
6.
chassis. Place it on the antistatic mat.
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 44: Removing a CB

The rear fan tray is mounted vertically on the right side of the rear of the chassis. The rear
fan tray contains seven fans. The fan tray weighs about 8.4 lb (3.8 kg).
CAUTION: To maintain proper cooling, do not operate the router with the
rear fan tray removed for more than 1 minute.
CB1 . Each CB weighs approximately 3.4 lb (1.5 kg).
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