Replacing the Ambient Light Sensor Board
1.Press the sticky side of the ambient light sensor board to the bottom inside edge of the rear housing.
2.Install the rubber bumper between the back of the ambient light sensor board and the chassis.
3.Replace the logic board.
4.Replace the optical drive.
5.Replace the hard drive.
6.Replace the speakers.
7.Replace the display panel.
8.Replace the lower EMI shield.
9.Replace the front bezel.
10.Replace the memory.
11.Replace the memory access door.
iMac
