Acer V277 Lifecycle Extension Manual page 9

Step.7 Unscrew two hex nuts and seven screws and remove main board PCBA from main shielding.
Step.8 Remove connecter cable and separate main board and power board, separate mylar and shielding
Step.9 Unscrew eleven screws and separate MID FRAME and panel
Step.10 Separate lens from MID frame
Step.11 Unscrew two screws and disassemble key board from rear cover and separate navi key& cable
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