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Hardware Installation and Maintenance Guide

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600

This section provides brief procedure for installing the AR series routers. This document describes preparations before AR series routers installation, installation methods and precautions, AR series routers maintenance, and common methods for troubleshooting typical hardware module faults.

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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).
Connecting DC Power Cables

Connecting DC Power Cables


To avoid electric shock, do not connect power cables while the power is on.

  • Do not power on a router before you finish connecting power cables and network cables.
  • Each router has its own power cables delivered as accessories. The power cables can only be used on the router in the same package and cannot be used on any other device.
  • The DC power cable parameters vary in different countries or regions. The figures in this section are for reference only and may differ from the cables delivered.
  • The methods for connecting DC power cables to different routers are the same. The following procedure connects DC power cables to the AR1220 DC model.

Tools and Accessories

  • ESD wrist strap
  • Phillips screwdriver
  • DC power cables


  1. Verify that the router is reliably grounded.
  2. Set the power switch to OFF.
  3. Wear an ESD wrist strap. Ensure that the ESD wrist strap is grounded and in a close contact with your wrist.
  4. Connect the DC power cables.
    1. Connect one end of the DC power cables to the DC power module of the router.


      The black cable is the -48 V return ground cable and must be connected to the RTN(+) terminal. The blue cable is the -48 V power cable and must be connected to the NEG(-) terminal.

    2. Connect the other end of the power cables to output terminals of the external DC power supply system.

Follow-up Procedure

Perform the following operations after connecting the DC power cables:

  • Verify that DC power cables are securely connected to the power terminals.
  • If multiple routers are installed, attach labels to both ends of each power cable and write numbers on the labels to identify them.
Updated: 2019-05-17

Document ID: EDOC1000039117

Views: 86131

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