Rose Electronics CrystalLink USB 2.0 CATx - Manual (Page 10)

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
USB device is attached but not
functioning. • The USB device requires drivers
that were not installed.
• The USB device does not
support USB hubs.
• The USB device has
malfunctioned
• Install the required USB device
driver on the computer operating
system prior to attaching the
USB device into the remote
extender. Please see your USB
device manufacturer’s website
for details.
• In the Universal Serial Bus
controllers section of Device
Manager, check that the USB
device is enumerated.
• Contact Technical Support for
assistance.
USB device is attached but not
functioning. • Over-current condition has
occurred because the USB
device has drawn more current
than can be supplied per USB
specification (500mA). Operating
systems may generate a status
bubble indicating an issue.
• Power cycle receiver unit:
Unplug the power adapter from
the extender, wait approximately
30 seconds, plug the power
adapter into the extender.
• If over-current continues to
occur, either:(a) the USB device
may use more power than the
USB specification, or (b) the
USB device may be damaged.
• Consult your USB device
documentation and power your
USB device with the required
power supply.
Link LED on the local and remote
extenders blink intermittently. • The CAT5e cable connecting the
transmitter and receiver is faulty.
• Firmware mismatch between the
local and remote extenders
• Ensure the CAT5e cabling is of
decent quality.
• Use a different transmitter and
receiver extender pair that has
the same firmware revision.
• Upgrade the local and remote
extender firmware; contact
Technical Support for
assistance.
Link LED on the local and remote
extenders is off.
• The receiver unit is not receiving
power.
• The transmitter unit is not
receiving power.
• The link cable is malfunctioning.
• The CrystalLink USB2.0
Extender is malfunctioning.
• Confirm Host PC is on and
providing power to local
extender.
• Ensure the supplied AC power
adapter is properly connected to
the transmitter or the receiver
unit.
• Ensure the CAT5e cabling
between the transmitter and
receiver units is properly
installed or replace the link
cable.
• Check that the AC adapter is
connected to a live source of
electrical power.
• Contact Technical Support for
assistance.