Juniper Networks EX4200 사용자 설명서

Related Topics

■

■

■

■

■

■

■

Removing a Fan Tray from an EX3200 or EX4200 Switch

EX3200 and EX4200 switches have a single field-replaceable unit (FRU) fan tray on
the rear panel. The fan tray is a hot-removable and hot-insertable FRU: You can
remove and replace it without powering off the switch or disrupting switch functions.

Before you begin removing a fan tray from an EX3200 or EX4200 switch, ensure
that you have taken the necessary precautions to prevent ESD damage (see
“Prevention of Electrostatic Discharge Damage on EX Series Switches” on page 236).

Ensure that you have the following parts and tools available to remove a fan tray
from an EX3200 or EX4200 switch chassis:

■

Electrostatic discharge (ESD) grounding strap

■

Phillips (+) screwdriver, number 2

■

An antistatic bag or an antistatic mat

1.

Place the antistatic bag or the antistatic mat on a flat, stable surface.

2.

Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.

3.

Loosen the screw or screws securing the fan tray by using the
Phillips (+) screwdriver, number 2.

WARNING: To avoid injury, do not touch the fan with your hands or any tools as
you slide the fan tray out of the chassis—the fan may still be running.

4.

Grasp the handle on the fan tray and pull firmly to slide the fan tray halfway out
of the chassis.

5.

When the fan stops spinning, slide the fan tray completely out of the chassis.

6.

Place the fan tray in the antistatic bag or on the antistatic mat placed on a flat,
stable surface.

174

■

Removing a Fan Tray from an EX3200 or EX4200 Switch

Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches