Step 1: Turn the treadmill sideways, remove the screws under the motor cover, and then turn the treadmill back over.
Step 2: Remove the motor cover, unplug the three communication wires on the display, and remove the screws in the display.
Step 3: Place the new display on the motor cover corresponding to the screw hole position, fix the three screws clockwise, and insert the three communication lines.
Step 4: Put on the motor cover, turn the treadmill over, and fix the screws of the motor cover.