Lexmark B2650 Service Manual page 221

4
Remove the two screws (A), cut the cable near the frame, and then remove the sensors.
5
Open the controller board access cover, and then disconnect the cable JDUPPI1.
6
Remove the cables.
Installation note: Route the sensor (input) cable (A) and sensor (duplex) cable (B) as shown.
Parts removal
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4600-830, -835, -895