Black Box IC244A, Руководство пользователя

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CHAPTER 4: Troubleshooting
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4. Troubleshooting
4.1 Problems, Causes and Solutions
The following table provides troubleshooting help. The topics are arranged
in the order in which they should be executed in most situations. If you are
unable to resolve the problem after following these instructions, please
contact technical support for further assistance.
Symptoms/Cause Remedy
All LEDs on Local Unit
are off.
Cause:
The Local Unit is not
receiving power from
the computer
1. Ensure that the Local Unit is connected to a
USB port on the computer
2. Check that the computer is switched on and
that the OS is running (not in Sleep mode).
Host LED on Local Unit
is on; Link LED on
Local Unit is off.
Cause:
There is no connection
between the Local Unit
and the Remote Unit.
1. Ensure that a Category 5 UTP cable with
straight-through conductors is connected
between the Local Unit and the Remote Unit.
2. Ensure that Category 5 cables and connectors
are used throughout the entire link between
the Local Unit and the Remote Unit.
3. Check that Category 3 cable has not been
substituted.
4. Check that the cable length between the Local
Unit and the Remote Unit does not exceed 50
metres.
5. Connect a short Category 5 patch cord
between the Local Unit and the Remote Unit.
Recheck the operation of the system.