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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replace a Fan Module

Replace a Fan Module


Each fan module of an AR2240, AR3260, or AR3670 router has multiple fans. If one of fans fails, replace the fan module to ensure normal heat dissipation in the router.

Fan modules are hot swappable. When replacing a fan module, insert the new fan module within 1 minute.


The procedures for replacing a fan module in different routers are the same. The following procedure replaces a fan module in an AR2240 router.


  • Phillips screwdriver
  • ESD wrist strap


  1. Wear an ESD wrist strap. Ensure that the ESD wrist strap is grounded and in a close contact with your wrist.
  2. Remove the old fan module.
    1. Use a Phillips screwdriver to loosen the captive screws on the fan module.
    2. Grasp the handle of the fan module and pull out a part of the fan module. Wait until the fans stop running, and then pull the fan module completely out of the chassis.

  3. Install a new fan module.
    1. Hold the handle of the fan module with one hand and support the bottom with the other hand. Slowly push the fan module into the slot along the guide rails, until the fan module is completely attached to the backplane.
    2. Use the Phillips screwdriver to tighten the captive screws on the fan module.

Follow-up Procedure

After replacing the fan module, collect all tools. If the replaced fan module is faulty, fill in the Appendix G Fault Tag and send the faulty module with the Repair Transmission Sheet to the equipment supplier or the specified repair service provider.

Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 456462

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