Yacht Devices YDPG-01, Руководство пользователя

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Appendix A. Troubleshooting
Situation Possible cause and correction
No LED signals 1. LED is controlled by user program. Switch off the Device
(disconnect the USB cable and switch off the NMEA 2000 network), and
then switch it on again. For one second after switching on, the Device’s
LED should show a short green signal. All subsequent LED signals can be
turned off by the user program. Contact your software supplier.
2. Power supply failure. The Device can be powered from USB or
NMEA 2000. If there is no LED signal after switching on the Device,
neither from USB nor from NMEA 2000, it may mean that internal circuits
of the Device are damaged and the Device is broken. Otherwise, check and
clean the Device’s contacts, try to replace the USB or NMEA 2000 cable,
making sure that the cables are properly connected at both ends.
Chaotic or unrecognized
LED signals
The LED can be controlled by a user program. Contact your software
supplier for details. Perform a software reset (see Section VIII) with
Ctrl+W (to avoid running main.py on startup) to check the LED signals.
Odd behavior of the Device,
even when the user program
is terminated
The program can use callbacks, which means that its code can still be
executed (control LED signals, read and send messages) when it’s main
cycle is interrupted and the user can type commands in the terminal.
Perform a software reset (see Section VIII) with Ctrl+W (to avoid running
of
main.py
on startup) to check the behavior of the Device.