Appendix A: Maintenance and Troubleshooting
21-14 SkyView System Installation Guide - Revision AA
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 SV-BAT-
320 connected.
o Green light solid on or off: Something is wrong with the SkyView display. Contact
Dynon Avionics 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-2020, its SERIAL IN FUNCTION must be set to POS 1.
If you have installed an SV-GPS-250 (but not an SV-GPS-2020), its SERIAL IN FUNCTION must
be set to POS 1.
If you have both an SV-GPS-2020 and an SV-GPS-250, the SV-GPS-250 should be set to POS
2.
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-250/2020 GPS Receiver, make sure that power and ground wires are also
installed correctly.
Ensure that the GPS serial port’s parameters are configured correctly. Go to the Serial Port
Setup Menu (SETUP MENU > SYSTEM SETUP > SERIAL PORT SETUP > SERIAL PORT # SETUP)
and check the input device, function, baud rate, and output device properties of the port.
This menu also contains serial transmit (TX) and receive (RX) counters. These counters show
activity on the transmit and receive lines of that serial port and can indicate if the GPS is
active on that port. Reference the SV-GPS-250/2020 Serial Data Connection Section for SV-
GPS-250/2020 serial port settings. Also reference the RS-232 Serial Devices Section on page
4-21 of this guide if a comprehensive explanation of SkyView serial connections is
necessary.
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