Dynon Avionics SkyView System Installation Guide - Manual (Page 348)

Appendix A: Maintenance and Troubleshooting
20-10 SkyView System Installation Guide - Revision S
SkyView Network harness or connector that goes to that component has a connectivity
problem. This could be a broken wire, swapped wires, bad connection, etc., and should be
analyzed with a multimeter or other direct method.
If the fault were instead listed under a SkyView display listing in the network status page, that
means that the fault is seen on all devices connected to that display, and is likely due to a
connectivity issue at or very near the display in your SkyView Network wiring scheme.
Compass Calibration Fails
If you try to calibrate your compass and it does not work, try the following:

Ensure SkyView is receiving data from the system’s GPS receiver – a
message: VALID GPS SIGNAL REQUIRED TO CALIBRATE COMPASS will appear if GPS data is
not available.

Ensure the SkyView network status includes the ADAHRS you’re trying to calibrate. Use the
Network Status Wizard and confirm that the ADAHRS is present in the system.

Ensure the ADAHRS location is compatible with the requirements outlined in the General
System Installation Tips Section of this guide, especially the discussion of external magnetic
interference.
Display does not Turn On
If your SkyView display does not turn on, try the following:

Check power wiring and fuses and try again. There may be a short or an open somewhere.

Observe the lights on the Ethernet port. Unlike other Ethernet ports, these lights are used
for display status:
o Yellow light on: Power on pins 1/20 (power/ground).
o Yellow light off: Display not receiving power.
o Green light flashing: Normal when display is turned on, or turned off with a backup
battery connected.
o Green light solid on or off: Something is wrong with the SkyView display. Contact
Dynon Technical Support (contact information at the beginning of this manual) for
further support.
No GPS
GPS is an essential part of a SkyView system. If you do not have a working GPS, you cannot set
the system time, calibrate the compass, or use the moving map. If you are experiencing these
symptoms, try the following:

If you have installed an SV-GPS-250, its SERIAL IN FUNCTION must be set to POS 1.

Check wiring and connections. Make sure all wiring runs are complete, that connections are
solid, and that transmit (TX) and receive (RX) are not swapped. If you have more than one
SkyView display, make the same serial port connections to ALL SkyView displays. If you are
using the SV-GPS-250 GPS Receiver module, make sure that power and ground wires are
also installed correctly.