Technical Documentation

Removing a Fan Tray from an EX-series Switch

EX 3200 and EX 4200 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 EX 3200 or EX 4200 switch, ensure that you have taken the necessary precautions to prevent ESD damage (see Preventing Electrostatic Discharge Damage).

Ensure you have the following parts and tools available to remove a fan tray from an EX 3200 or EX 4200 switch chassis:

  • Electrostatic discharge (ESD) grounding strap
  • Phillips (+) screwdriver, number 2
  • An antistatic bag or an antistatic mat

To remove a fan tray from an EX 3200 or EX 4200 switch (see Figure 1 and Figure 2):

  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.

Figure 1: Removing a Fan Tray from an EX 3200 Switch

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Figure 2: Removing a Fan Tray from an EX 4200 Switch

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Note: When a fan tray is removed, Fan/Blower is Absent is logged in the system log and the system raises a minor alarm.