
Appendix - Personal Notes
ComTec GmbH
Appendix 8-11
8.7. Trouble
Shooting
•
The ‘POWER ON’ LED does not light up:
1) check that power is applied to the external power supply
2) check the 12 V supply cable is properly plugged in
3) check that the external power supply works – check it’s output voltage
•
No LED’s of the input channels will light up a few seconds after power is applied:
Please remove the power until the ‘POWER ON’ LED is dark and reapply power
•
The MPA4 is not found by the host computer:
1) Check that USB 1 is properly connected
2) Remove the MPA4 power supply, wait for about 10 seconds and reapply power