Cirrus DESIGN SR20 Information Manual page 231

Cirrus Design
SR20
Power for the MCU is 28 VDC supplied through the 5-amp MFD circuit
breaker on the Avionics Non-Essential Bus.
Serials 1005 through 1472 before MFD software version 530-
00162-000 Revision 02; Do not use the Garmin 420 or 430
Navigators to display Stormscope lightning data when the
Avidyne MFD's Lightning mode is set to either DATALINK or
OFF. For the Garmin 420 or 430 Navigators to accurately
display lightning strikes, the Lightning mode selected on the
MFD's MAP Page, must be set to either STRIKE or CELL.
Refer to Avidyne FlightMax EX5000C Pilot's Guide, for a more
complete description of the MFD, its operating modes, and additional
detailed operating procedures.
P/N 13999-002 Info Manual
September 2011
• Note •
Section 7
Airplane Description
7-69