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1) Remove wall mount screws and rear cover, Take the electric screwdriver and remove the 4 rear cover wall
mounted screws (as shown blue circle) and remove rear cover.
2) Remove the rear cover and key board. Remove the rear cover first, after disassembling the rear cover, hold the
rear cover with your hand (do not damage the wire), remove the buttons from the rear cover, and then put the
rear cover aside.
3) Remove the function key board and power key board. After opening the hook at the connector of the function key
board in the blue circle, unplug the two FFC wires. Take out the power keypad from the yellow square and unplug
the cable; place the power keyboard and the function key board at the designated position.
Содержание U28
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