Operation Guide-Method of replacing height aligning sensor

1. Remove the two screws fixed on the aluminum substrate;

2. Pull out the connector shown in the figure from the bottom to remove the height aligning board component;  You can move upwards the platform and see the connector in the bottom of the platform

3.  Remove the screws fixing the height aligning board, push out the height aligning board in the direction shown, and then replace the PCB-height aligning board.