Specifications

Hardware Reference 9
C613-03026-00 REV F
Troubleshooting
This section provides information on how to detect and resolve the most
common problems that can cause Uplink Modules to malfunction.
Other sources of troubleshooting information are:
www.alliedtelesyn.co.nz.
The Software Reference for your switch unit.
Performing the following tasks will eliminate the most common faults.
1. Check that the Uplink Module is correctly installed. See the Quick Install
Guide for your switch for a step by step guide to installing Uplink Modules.
2. Make sure the power cord is securely connected to the switch unit and
power outlet.
3. Check that the power supply voltage to the switch unit is stable.
4. Check that the correct data cables are being used and that their connections
are secure.
5. Make sure that other network devices are working properly.
6. Use the SHOW INSTALL command to check that the latest software release
is loaded. See your switch unit’s Software Reference for more information
about obtaining the latest software release.
7. If the switch unit is malfunctioning, reboot it by pressing the recessed Reset
button or entering the command RESTART REBOOT. Alternatively, power
OFF and ON the switch unit by disconnecting and reconnecting the main
power supply (including, if connected, the RPS power).
If the Uplink Module continues to malfunction, see “Some common problems
and how to solve them and follow” on page 12.
LEDs and what they mean
The following tables outline how Uplink Modules, AR800 Series Switching
Routers, Rapier Switches, and Rapier i Switches report faults and operational
activities.
Uplink Module LEDs
These LEDs are on the face-plates of respective Uplink Module models.
Table 8: Uplink Module LEDs (AT-A35/SX and AT-A35/LX).
LED State Function
Link Green The port is receiving light
Off No link is present
Activity Flashing Amber Frames are being transmitted or received
through the port
Off No activity is occurring