8-5
To ensure flat assembly of the face plate, when fixing the four screws on the rear housing, do as follows:
lay the N1 main unit flatwise, and turn the four screws by 2-3 circles for preliminary fixing; place the N1
main unit vertically, and use one hand to press the main unit and the other to tighten the screws.
NOTE
After assembly, check that the silicon cover shown in the figure below is assembled properly.
3. Use your hand to press the battery housing to separate the main frame, and then remove the rear housing.