Apple 540C, 520C manual

Take ApartCPU Stiffener - 51

Note: If you are replacing the CPU stiffener, remove the side panels.

4 Using a T-8 torx driver, remove the right side- panel screw.

5 Lift the panel slightly, slide it back, and remove it from the CPU stiffener.

6 Using a T-8 torx driver, remove the three left side-panel screws.

7 Slide the panel to the left and remove it from the CPU stiffener.