3.Lift the board from the chassis.

Note:Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image

shows. Please detach the Circuit boards and follow local regulations for disposal.

4.Punching in IO Shield then you can remove it.

5.Remove the RTC battery.

Note:RTC battery has been highlighted with the yellow circle as above image

shows.Please detach the RTC battery and follow local regulations for disposal.

Chapter 3

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Acer M3900 manual