− 5-15 −2. 1) Rotate and align the hinge pivot with the open area facing upward and carefully insert into the main area of the lowercover assembly, taking care to tilt the upper housing assembly without causing damage to the flex circuit duringreassembly. 2) Push down gently until the upper housing assembly is full engaged into the lower cover. Insert microphone.Caution: Damage to the flex circuit portion of the upper flex PCB is not repairable. The flex circuit may be easily damagedduring this operation, causing a small tear which can grow with use and render the circuit unusable.3. 1) Insert hinge holder into the lower cover in the direction shown. 2) Gently lower the other side of the hinge holder into thelower cover. Insert the retaining screw and torque to 1.3 KGF-CM using a #3ULR0 Trident screwdriver tip.4. Position the 80 pin connector so that the boss in the lower case locates inside the hole in the flex, and theedge of the connector locates under the two tabs of the hinge holder. Take care toavoid damage to the exposed Flex Circuit during this step