SMC Networks SMCEZNET-16SW, Руководство пользователя

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Quick Installation Guide
8
Troubleshooting
Diagnosing Switch Indicators
The EZ Switch 10/100 can be easily monitored through panel indicators to assist the
network manager in identifying problems. This section describes common problems
you may encounter and possible solutions.
Symptom:Link indicator does not light up (green) after making a connection.
Cause: Network interface (e.g., a network adapter card on the attached device),
network cable, or switch port is defective.
Solution: Verify that the switch and attached device are powered on. Be sure the
cable is plugged into both the switch and corresponding device. Verify
that the proper cable type is used and its length does not exceed specified
limits. Check the adapter on the attached device and cable connections
for possible defects. Replace the defective adapter or cable if necessary.
Symptom:Power indicator does not light up (green) after power on.
Cause: Defective power outlet, power cord, or internal power supply.
Solution: Check the power outlet by plugging in another device that is functioning
properly. Check the power cord with another device. If these measures
fail to resolve the problem, have the unit’s power supply replaced by a
qualified distributor.
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply as
explained in the previous section. However, if the unit powers off after running for a
while, check for loose power connections, power losses or surges at the power
outlet, and verify that the fans on the right side of the unit are unobstructed and
running prior to shutdown. If you still cannot isolate the problem, then the internal
power supply may be defective. In this case, contact your distributor for assistance.
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (e.g., the power cord or network cabling),
test them in an alternate environment where you are sure that all the other
components are functioning properly.