Solution: Furuno NavNet3D CMOS date/time not set

Sv Garulfo

Hi all,

if, when starting your Furuno Navnet 3D MFD, you see a black screen with an “American Megatrend” logo, all sorts of lines of text and a mention of “CMOS date/time not set” towards the end, you need to replace the easily available CR2032 button battery in the computer/central unit. Exact location shown on the attached picture. 


Hope it’ll help someone some day!

Hiva Oa, French Polynesia 

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