Troubleshooting; Overview - Paradyne COMSPHERE 3821Plus User Manual

Overview

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Automatic Firmware Download
Download Failure
Overview
This appendix points out basic problems that can occur
when operating a 3821Plus modem. Use
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 associated with the &T command.
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.
Symptom
Modem did not pass
power-up self-test
LEDs do not light
A problem is suspected
after the power-up self-test
3821-A2-GB20-30

Troubleshooting

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Tables C-1
Table C-1
Modem Health
Contact the Customer Assistance Center (1-800-237-0016).
Verify that the modem card is fully seated in its slot.
Verify that the power supply for the 3000 Series Carrier is properly installed and is receiving
power.
Perform a self-test using the AT&T9 command.
Perform a local analog loopback with a Pattern test. If the modem consistently registers
errors contact the Customer Assistance Center errors, contact the Customer Assistance Center.
If the modem passes the above tests and a problem still exists, then the problem is likely
not with your modem.
February 1998
If you would like to download the latest 3821Plus
firmware from the Automatic Firmware Download
Center, see the instructions at the end of this chapter. If
you would like to copy the software in your modem to a
remote 3821Plus modem, see the &&P1 command in
Chapter 4.
Action
C
C-1
C-5
C-5
C-1