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
12 Uplink Module
C613-03026-00 REV F
Some common problems and how to solve them
Link/Activity LED on Any Port is Off
This can indicate:
■
A loose data cable.
■
The device at the other end of the connection is not working properly or is
turned off.
■
The data cable is not wired correctly.
■
The network administrator has manually disabled the port through the
software.
■
The port’s selected transmission mode does not match that of the attached
device.
Perform the following steps in sequence:
1. Make sure the data cable connections are secure.
2. Make sure the device at the other end of the connection is switched on and
working properly.
3. Check that the data cable is wired correctly.
4. If you can, log in and check the port status. See your switch unit’s Hardware
Reference for more information about logging in.
5. If the port is Enabled, make sure the transmission speed matches that of the
connected device (auto-negotiating, full or half-duplex).
If the port is disabled, someone has used the software to manually disable it. You should
find out why the port was disabled before enabling it.
The Switch Unit’s Power LED is OFF
This can indicate:
■
A loose power cord.
■
A power supply failure.
Perform the following steps in sequence:
1. Check that the power cord connection is secure.
2. Ensure that the supply voltage is within the 110/240 VAC operational
range.
3. If you can, log in and run diagnostics. See your switch unit’s Hardware
Reference for more information about logging in and running diagnostics.