Acer Aspire X3990 Acer Aspire X3990 Desktop Service Guide - Page 51

Remove the four screws that secure the mainboard to the chassis.

Page 51 highlights

4. Remove the four screws that secure the mainboard to 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. 5. Lift the board from the chassis. 43 Chapter 3

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