The motherboard is a vital component of the printer. A motherboard replacement is often a final solution in order to fix the printer and must be handled with care.
Turn off the printer then open the top lid in order to see the inside of the printer.
After waiting 15 minutes, locate the blue tabs and gently pull them out of their sockets.
Locate the three white plugs with wires attached to them. Gently grab the sides of the white chorded plugs and pull them out of their socket.
Using a T-10 Torx screwdriver, unscrew the three 1/2'' screws on the motherboard.
Carefully pull the motherboard out of the printer.