Lexmark X543 Service Manual page 263

8.
Next to screw (D), lift the right lower frame pin (E) out of the hole in the printer frame.
9.
Swing the rear of the lower frame away from the printer to access the tray present sensor latches.
10.
Remove and secure the spring (F) from the right lower frame.
Note: The spring easily gets lost.
11.
Disconnect the tray present sensor cable.
7525-xxx
4-65
Repair information