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Replacing an MX2020 Fan Tray

 

Removing an MX2020 Fan Tray

Note

The fan trays are interchangeable and are hot-insertable and hot-removable.

Caution

To prevent overheating, install the replacement fan tray immediately after removing the existing fan tray.

To remove the upper or lower fan trays (see Figure 1 and Figure 2):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Reposition the DC cable manager, if necessary, before removing the upper or lower fan tray:
    • Unwrap any cables on the DC cable manager, and remove the cables from the tray. Arrange the cables so that they do not block the front of the cable manager and tray, and secure them with temporary fasteners so that they are not supporting their own weight as they hang from the connector.

  3. Loosen the two captive screws on each side of the fan tray access panel and then open it.
  4. Loosen the two captive screws on the fan tray faceplate.
  5. While grasping the handle, press and hold the latch until the status LED turns off. Pull the fan tray out approximately 1 to 3 inches until it stops.Note

    The fan trays are interchangeable and are hot-insertable and hot-removable.

  6. Press and hold the latch a second time to disengage fan operation. Place one hand under the fan tray for support while pulling the fan tray completely out of the router.Caution

    The double latch system is a safety mechanism. Damage to the fan tray will occur if you do not hold the latch while removing the fan tray.

  7. Place the fan tray on an antistatic mat or in an approved ESD bag.
Figure 1: Removing the Upper Fan Trays
Removing the
Upper Fan Trays
Warning

Before removing a fan tray, make sure the fan blades have stopped completely.

Figure 2: Removing the Lower Fan Trays
Removing the
Lower Fan Trays

Installing an MX2020 Fan Tray

This topic describes how to install the upper or lower fan trays in a MX2020. This procedure applies to both the standard fan tray and the optimized power fan tray.To install the upper or lower fan tray (see Figure 3 and Figure 4):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Reposition the DC cable manager, if necessary, before installing the upper or lower fan tray:
    • Unwrap any cables on the DC cable manager and remove the cables from the tray. Arrange the cables so that they do not block the front of the cable manager, and tray and secure them with temporary fasteners so that they are not supporting their own weight as they hang from the connector.

  3. Loosen the two captive screws on each side of the fan tray access panel, and open.
  4. Take each fan tray to be installed out of its electrostatic bag, and identify the slot on the fan tray where it will be connected.
  5. While grasping the handle, place one hand under the fan tray for support, and align it into the slot.Note

    When inserting the fan tray observe the correct orientation by the "this side up" label on the fan tray.

  6. Press and hold the latch while guiding the fan tray half way in until it stops.Note

    The fan tray has a safety mechanism so that the fan tray cannot be removed in one motion.

  7. Press and hold the latch a second time while inserting the fan tray completely into the router.
  8. Tighten the two captive screws on the fan tray faceplate. Apply between 10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Do not overtighten the screws.
  9. Close the fan tray access panel, and tighten the captive screws to secure it in place. Apply between 10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Do not overtighten the screws.
  10. Reinstall the DC cable manager back into position, if necessary.
Figure 3: Installing Upper Fan Trays
Installing
Upper Fan Trays
Figure 4: Installing Lower Fan Trays
Installing
Lower Fan Trays