View Full Version : Changin the clock/NVRAM battery in AF-3500 non "S" CPU

Rob Hickman
11-27-2013, 12:08 PM
The older AF-3000 non "S" CPU units have a small battery located under the top EFIS cover. The battery is used to store the time, autopilot settings, and screen configuration settings.

If you EFIS is losing settings you need to replace the battery.

See http://advanced-flight-systems.com/Support/AF-3000support/af-3000support.html#manuals