Zhone 3810Plus Guia do Utilizador descarregar pdf (Página 175)

C-13980-A2-GB30-40 October 1998

Troubleshooting

Overview

Appendix B, Result Codes, points out basic problems

that can occur when operating a 3800Plus modem. Use

Tables C-1 through C-6 to check out these problems. If

you are having data communication difficulties, such as

periodic character loss, random errors, or constant format

errors, use the loopback tests described in Chapter 7, Test

Branch. With these tests you can usually isolate the fault

in your system by using the process of elimination. If

problems continue to occur, contact your service

representative.

Table C-1

Modem Integrity

Symptom

Action

Modem did not pass power-up self-test Contact your service representative.

Power LED does not light

LCD does not display

Make sure the modem’s ON/Off switch is in the ON position.

Make sure the ac power transformer is connected to the ac power receptacle.

If Power LED and/or LCD do not operate, contact your service representative.

A problem is suspected after the

power-up self-test

Perform a self-test via the modem’s DCP or type AT&T9 if using AT

commands.

Perform a local analog loopback with a Pattern test. If the modem consistently

registers errors, contact your service representative.

If the modem passes the above tests and a problem still exists, then the

problem is likely not with your modem.

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Zhone 3810Plus Guia do Utilizador Página 175