Guntermann & Drunck USB 2.0 Ranger 2304-LAN - Manual (Page 13)

Troubleshooting
The following table provides troubleshooting tips. 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.
PROBLEM CAUSE SOLUTION
All LEDs on LEX
unit are off. • The LEX unit is not receiving
power from the USB port. 1. Ensure that the host computer is connected to
the LEX.
2. Move the USB connector to another USB port
on the host computer.
All LEDs on REX
unit are off. • The REX unit is not receiving
power from the AC adapter. 1. Ensure that the AC power adapter is properly
connected to the REX unit.
2. Check that the AC adapter is connected to a live
source of electrical power. Check that the REX
power LED is illuminated.
Link LEDs on
LEX unit and
REX unit are off. • There is no connection between
the LEX unit and REX unit. 1. Ensure Cat 5e cable is connected between the
LEX unit and REX unit. Cat 5e or better cable, UTP
with a straight through connector and no
crossovers, and 8 conductor RJ45 connectors are
used at both ends.
2. Connect a short Cat 5e patch cord between the
LEX unit and REX unit to determine if the original
Cat 5e cable is defective.
Link LEDs are
blinking. • There is no connection between
the LEX unit and REX unit.
• Units may not be paired to each
other
• Network switches exist on
different subnets.
• Network switch(es) are blocking
traffic from the extenders.
1. Ensure both the LEX and REX units are connected
together directly or are connected to active
network switches.
2. Re-pair the units together.
3. Ensure the network switches can communicate
with each other and are on the same subnet.
4. Ensure the network switches are not blocking
traffic from the extenders either based on MAC
address or due to traffic patterns.
5. Consult with your network administrator.
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