Rose Electronics CrystalLink USB 2.0 Fiber - Manual (Page 11)

TROUBLESHOOTING
Installation and Operations Manual 7
Troubleshooting Guide
The troubleshooting section is used as a guide to understanding the
capabilities of the CrystalLink USB 2.0 Fiber extender and for general
troubleshooting. If you have any problems or questions concerning the
installation, operation or usage of the CrystalLink USB 2.0 Fiber extender
that is not covered in this manual, please contact Rose Electronics for
technical support.
All LEDs on the transmitter or receiver are off

Verify that the power adapter is connected to the unit and to a live
power source
Link LEDs on the transmitter and receiver are both off

Verify the Fiber cable is securely connected to the transmitter and
receiver RJ45 connectors
Host LED on the transmitter is off

Verify the USB cable from the transmitter to the computer’s USB port

Verify that the computer supports USB hubs

Verify that the CrystalLink USB 2.0 Fiber is recognized in the device
manager as a Generic USB Hub, if not, contact tech support
All LEDs are on but the USB device does not operate correctly

Connect the USB device directly to the computer’s USB port. If the
device functions properly, connect a different type of USB device to the
receiver port the non-operating USB device was connected to. If this
device does not function, the unit may be malfunctioning, contact tech
support. If the device operates properly, the first USB device may not
be compatible with the CrystalLink USB Fiber extender. Contact tech
support for assistance.