Troubleshooting – B&B Electronics 00-00327 - Manual User Manual

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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.