Lexmark CX725
Remove the top frame cover. See Top frame cover removal.
Remove the top frame base cover. See Top frame base cover removal.
Remove the screw (A) on the left and the two screws (B) on the right of the diverter.
Remove the diverter from the top frame base cover.
Lexmark CS/X72x and C/XC41xx: Print Quality Diagnosis ? Light Print on Printed Page Colors
Lexmark CX/CS8xx_72x and XC/Cxxxx: How to use the Lexmark Scan Center functions found in the 2016 Lexmark printer common utilities package