Manual

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 or the
(optional)LEXACadapter.
1.EnsurethattheUSBconnectionbetweentheLEX
and host computer is properly installed.
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.
StatusLEDson
boththeLEX
andREXare
blinking.
•Thereisnoconnectionbetween
theLEXunitandREXunit.
•TheLEXunitisnotconnectedto
a USB 3.0 port
•Thehostcomputerdoesnot
support USB 3.0
1. Ensure that the host computer supports USB 3.0,
refer to manual for the computer to confirm.
2.EnsuretheLEXunitisconnectedtoaUSB
3.0 port. The centre of the port should be blue.
Another colour, such as black usually indicates a
USB 2.0
3. Ensure that a multimode fiber optic cable with
crossoverisconnectedbetweentheLEXand
REXunits.
4. Connect a fiber optic crossover patch cord
betweentheLEXandREXunits.Recheck
operation of the system.
StatusLEDisoff
on one or both
units
•The computer went into
suspend, hibernate or sleep
mode.
•The computer tried to suspend
theUSB3.0portthattheLEXis
connected to.
1.PowercycletheREXunitandthedevices
connectedtotheREX
2.PowercycletheLEXandREXunits,andthe
devicesconnectedtotheREX
3. Follow the steps in “Preparing Your Computer” on
page 7 to disable suspend modes on your
computer.Refertoyouroperatingsystem’s
manual for additional instructions if necessary.
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