Date: December 1, 2009
All EFIS-D6 / EFIS-D10A / EFIS-D60 / EFIS-D100 / EMS-D10 / EMS-D120 / FlightDEK-D180 units with the Keep Alive feature connected to the aircraft electrical power. SkyView is not affected by this bulletin.
All firmware versions.
At any time.
Dynon has found that some EFIS-D6 / EFIS-D10A / EFIS-D60 / EFIS-D100 / EMS-D10 / EMS-D120 FlightDEK-D180 units can have problems booting up with the Keep Alive line connected.
On EMS products, the Keep Alive line is used only to keep the clock running. On EFIS products, the Keep Alive line is only used to keep the clock running if an internal battery is not installed. If the internal battery is installed, the Keep Alive recharges the internal battery even when master power is off (at the expense of pulling power from the aircraft battery). All other settings are stored in non-volatile storage.
1) Disconnect the EFIS-D6 / EFIS-D10A / EFIS-D60 / EFIS-D100 / EMS-D10 / EMS-D120 / FlightDEK-D180 Keep Alive line from the aircraft power. For EFIS and FlightDEK products, this is pin 2 on the DB25 connector. For EMS products, this is pin 2 on the DB37 pin connector.
2) We also suggest you download and install the latest version of firmware, and connect a GPS output to your EFIS to keep the clock synchronized.