Lexmark C920 - Size Detection Mechanism

Diagnostic aids 3-41
5056-XXX
Size detection mechanism
The paper size can be switched between A4 and letter (11 inches) by changing the side fence position.
The paper size sensor 2 detects the fixing screw 2 at the A4 position.
The paper size sensor 1 detects the fixing screw 1 at the letter position. Tray up motion stops when the up
sensor is OFF, not shielded.