Lexmark XM1242 - Hardware Options Problems; Cannot Detect Internal Option

Sensor (tray present) removal
1 Remove the right cover. See “Right cover removal” on page 223.
2 Disconnect the cable (A).
3 Release the three latches (B), and then pry to remove the sensor.
C
C
A
B
Cooling fan removal
MX321 cooling fan
1 Remove the right cover. See “Right cover removal” on page 223.
2 Disconnect the cable JFAN1 from the controller board.
7017-2xx, -4xx, -6xx
Parts removal
227