11
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 local
extender are off.
• The local extender is not
receiving enough power from
the USB port or the (optional)
local extender AC adapter.
1. Ensure that the USB connection between the
local extender and host computer is properly
installed.
2. Move the USB connector to another USB port
on the host computer.
All LEDs on
remote extender
are off.
• The remote extender is not
receiving power from the AC
adapter.
1. Ensure that the AC power adapter is properly
connected to the remote extender.
2. Check that the AC adapter is connected to a live
source of electrical power. Check that the remote
extender power LED is illuminated.
Link LEDs
on local and
remote extender
units are off.
• There is no connection between
the local extender and remote
extender.
1. Ensure that a singlemode fiber optic cable with
crossover is connected between the local and
remote extenders.
2. Connect a short fiber optic crossover patch cord
between the local and remote extenders.
Recheck operation of the system.
Link LED on
local and
remote extender
units are on,
Host LED
on local and
remote extender
units are off.
• The host computer is not
powered on.
• The local extender is not
connected to the computer
(when used with the optional
local extender AC adapter).
• The computer does not
support USB hubs.
• The RG2324/44 is
malfunctioning.
1. Disconnect all USB devices from the remote
extender.
2. Disconnect the local extender from the computer.
3. Disconnect the remote extender from the AC
power adapter.
4. Reconnect the local extender to the computer.
5. Reconnect the remote extender to the AC power
adapter.
6. In the Universal Serial Bus controllers section of
Device Manager, check that the RG2324/44 is
recognized as a “Generic USB Hub”.
Both extenders
were working,
but then the
Host LED on
remote extender
unit is suddenly
blinking.
• The remote extender is in
suspend mode. The operating
system may put the RG2324/44
in suspend mode when the
computer is put into a
Suspend/Standby state or
when no USB device(s) are
attached.
1. Recover/Resume the operating system from
Suspend/Standby mode (see your operating
system’s documentation).
2. Attach a USB device to the Ranger 2324/44.
