Lexmark MX910de Service Manual page 686

Assembly 72: 2 x 500‑sheet tray—Tray 3 or Tray 4 frame
Asm-index P/N Units/opt Units/FRU Description
1 40X9308
2 40X9306
3 40X9309
2 1 2 x 500-sheet tray near empty sensor
actuator
2 1 Tray insert paper length guide
2 1 2 x 500-tray insert paper length sensor
actuator
Parts catalog
686
Removal procedure
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"Tray insert paper length guide
removal" on page 475
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7421