Lexmark C540 - Page 182

4-44 Service Manual
5025-2xx, 4xx
12. Remove the duplex sensor. See “Duplex sensor removal” on page 4-21.
13. Swing the rear part away from the printer to access the spring and sensor.
14. Release the tabs to remove the tray present sensor (F) from the side frame.
Note: The sensor is not part of the left lower frame FRU.