Specifications
Table Of Contents
- Uplink Module Hardware Reference
- Copyright
- Contents
- Models Covered By This Reference
- Why You Should Read This Reference
- Where To Find More Information
- Compatible Switch Units
- Hardware Description
- Uplink Module Overview
- AT-A35/SX 1-port 1000BASE-SX (SC connector)
- AT-A35/LX 1-port 1000BASE-LX (SC connector)
- AT-A39 1-port 10/100/1000BASE-T (RJ-45 connector)
- AT-A40/SC 1-port 100BASE-FX Multimode Fibre (SC connector)
- AT-A40/MT 1-port 100BASE-FX Multimode Fibre (MT-RJ connector)
- AT-A41/SC 1-port 100BASE-FX Singlemode Fibre (SC connector)
- AT-A41/MT 1-port 100BASE-FX Singlemode Fibre (MT-RJ connector)
- Hardware Features Common To All Models
- Troubleshooting
- Port, Connector, and Cable Combinations
- Contacting Us
Hardware Reference 13
C613-03026-00 REV F
Fault LED is On
This can indicate:
■
There is a problem with the switch unit or RPS PSU.
■
The switch unit or its management software is malfunctioning.
■
A software download has been unsuccessful.
■
A low power supply voltage.
■
Switch-unit overheating due to a fan failure or extreme ambient
temperature.
Perform the following steps in sequence:
1. Check Table 11 on page 11 for descriptions of the flashing sequences and
what they mean.
2. Reset the switch unit by pressing the recessed RESET button on the front
panel.
3. If you were attempting to download software or manage the switch unit via
the RS-232 terminal Port, check that connections between the Terminal Port
and local terminal or PC are secure.
If you cannot access the switch unit’s software because of a faulty RS-232
Terminal Port connection, you can still manage the switch unit via Telnet or
SNMP until the problem is fixed.
4. Unplug the switch unit and then plug it in again. If present, you will also
have to disconnect and reconnect the RPS unit.
5. If you can, log in and run diagnostics. See your switch unit’s Hardware
Reference for more information about logging in and running diagnostics.
6. Download the latest software release. See your switch unit’s Software
Reference for more information on how to obtain the latest software release.