Acer X34GS Lifecycle Extension Manual page 54

Step7.Assembly light sensor BD in mid-frame,,and insert 6pin FFC to MB
Step8. Assembly Key BD and LED BD in the rare cover, insert 6pin FFC to MB ,use tape to fix it
Step9. Assembly rear cover, and push around the surrounding to make sure assembly well.
Step10.
Put in stand and use 4 screw lock it ,than clip into VESA Cover
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