U
S
NIVERSAL
UBSCRIBER
Troubleshooting
This chapter provides information to help you resolve common hardware and
software problems. It also contains a list of known error messages associated with the
Management Interface.
General Hints and Tips
The USG is both a hardware device and a powerful software utility. As a hardware
computing device, the USG requires careful handling. It should be positioned in a
dust-free and temperature-controlled environment. Never block the unit's ventilation
holes, and do not stack with other equipment (unless correctly mounted in a rack). If
you suspect the unit is overheating, check that the internal cooling fan is operating
correctly. The fan should run freely and silently at all times. The power cord and the
UTP patch cables must have an unrestricted path between the unit and their
destinations. Ensure that the RJ45 connectors are firmly located in their receptacles.
Applying these guidelines should ensure trouble-free operation.
Power Loss
Use this procedure if you unexpectedly lose power to the USG.
The power cord is firmly situated in the power socket on the rear panel.
YES NO
Plug in the power cord again and ensure that it is firmly situated in its
socket.
The solution provider's power source is available.
YES NO
Inform the solution provider that the power source to the system has
failed.
Replace the fuse in the USG. See
Power is restored.
YES NO
Contact technical support. See
There is usually a reason why a fuse fails. When you power up the system,
check that the cooling fan is operating correctly. You should also check that
the system is adequately ventilated.
Troubleshooting
G
™
ATEWAY
"Replacing the Fuse" on page
"Technical Support" on page
5
226.
231.
223
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