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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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A Terminal Connecting to a Router Displays Garbled Characters After a Startup

A Terminal Connecting to a Router Displays Garbled Characters After a Startup

Fault Description

After a terminal connecting to a router starts, it cannot display anything or displays garbled characters.

Possible Causes

  • The power module of the router is faulty or the router is not powered on.

  • The serial interface connecting to the router is incorrectly configured.

  • The cable between the terminal and router is faulty or not firmly connected to the serial interface.

Troubleshooting Procedure

  1. Check the power indicator on the router's front panel. If the power indicator is On, the power module is working properly; otherwise, the entire device is not powered on.

  2. Check whether the correct combo interface is selected and whether the physical attributes of the PC are consistent with those of the serial interface. The default parameters are as follows:

    • Baud rate: 9600

    • Data bit: 8

    • Stop bit: 1

    • Parity check: None

    • Flow control: None

  3. Ensure that the cable is firmly connected to the serial interface. You can replace it with a new cable to verify whether the cable is faulty.

  4. If the fault persists, collect error information and contact technical support personnel.

Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 455382

Downloads: 4320

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