▪Charge the SYMBIOS HUD  for at least 3h. If the SYMBIOS HUD  is completely discharged, it loses all decompression information and is reset to default settings. It should restart shortly after the charging has started.

•Check the cable and the connector pins for corrosion and dirt. Clean if possible

•Use a charger that can output at least 800mA and a voltage of 5V

•This can happen when the SYMBIOS HUD  was exposed to a sudden drop of atmospheric pressure. In this case it is necessary to reset the SYMBIOS HUD. Simply attach the USB cable to the SYMBIOS HUD  and plug it in a charger. In this specific case the SYMBIOS HUD  will be reset after a few seconds. All decompression information and user settings are lost after a reset.

•Check if the tilt sensor is paired

•Perform a calibration of the tilt sensor

▪Check if the SYMBIOS Tank Pod is paired correctly

▪Check the battery voltage of the SYMBIOS Tank Pod in the pairing menu.

▪Check if the SYMBIOS Tank Pod is pressurized.

▪Check if the SYMBIOS Tank Pod is within the maximum transmission range of 90cm