Turn the turntable the right way up
Lift out the overarm. put it aside safely
Remove the turntable by removing the circlip in the centre.
Loosen the two screws that hold the pick up arm in place lift off the arm and put it aside safely.
Remove the turntable idler wheel and put it aside, loosen the two screws on the larger changer pulley and lift it off. It might need a bit tight.
Pull off the motor pulley complete with spring, do not lift out the fan, you'll distort the blades.
With a suitable tool, gently tap the top of the motor spindle so the armature falls of of the bottom, the fan can then be taken out.
Remove the five screws arrowed that secure the sub chassis to the main deck.
The sub chassis should drop out from the deck.