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www.netcomm.com.au Rev.1 - YML623
Page 12 16-port 10/100Mbps Fast Ethernet ProSwitch
TROUBLE SHOOTING
Symptom Cause Solution
Power LED is off. Power not received at Switch Check the power cord connections for
the switch and the connected device.
Check for a defective adapter card,
cable, or port by testing them in an
alternate environment where all products
are functioning.
Make sure all cables used are correct
and comply with Ethernet specifications.
Link LED is off or Port connection is not Check the crimp on the RJ-45 connectors
intermittent. functioning. and make sure that the plug is properly
inserted and locked into the port at both
the switch and the connecting device.
Make sure all cables used are correct
and comply with Ethernet specifications.
A segment or device One or more devices are Verify that the cabling is correct (refer to
is not recognized not properly connected or Cabling Guidelines”). Be sure all
as part of the cabling does not meet cable connectors are securely
network. Ethernet guidelines. positioned in the required ports. Straight-
through cables should be
used for all standard twisted pair
connections.
Make sure all devices are connected to
the network. Equipment may have been
accidentally disconnected.
Network Adapter Cards
Make sure the network adapter cards installed in the PCs are in working condition and the
software driver has been installed.
Configuration
If problems occur after altering the network configuration, restore the original connections and
determine the problem by implementing the new changes, one procedure at a time. Make sure
that cable distances, repeater limits, and other physical aspects of the installation do not exceed
the Ethernet limitations.