Troubleshooting
2015-11-18
65
8.1
USB 2.0
CPU Unit
CON Unit
3
1
2
3
1 2
3
1
2
3
1 2
Rear View
Rear View
Diagnosis
Possible Reason
Measure
CPU Unit:
All LEDs off
No connection to CPU
Check connection USB cable to
CPU; select another USB port if
necessary.
Remove USB and power cable
and restart CPU. Connect power
cable first.
CON Unit:
LED
3
red
Connection between
CON Unit and CPU Unit
Check interconnect cable and
connectors.
No USB 2.0 device
Connect USB 2.0 device.
CON Unit:
LED
3
flashing
green / light
blue and
USB 2.0 device
without function
USB 2.0 device is not
supported
Check installation at the CPU,
also the necessary drivers.
New connection of the USB 2.0
device.
Contact dealer if necessary.
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