Adf Separation - Lexmark CX725 Service Manual

A signal is sent to the ADF to poll the sensor (media present) (1) to check if the scan document is in the correct
position. The document must be placed in the ADF input tray so that it actuates the sensor (media present).
If the scan document has actuated the document sensor, then an ADF scan is executed. At this point, the pick
roller (2) lowers and moves the document into the ADF.

ADF separation

The separator roller prevents picking of multiple documents.
1 Pick roller
2 Sensor (media present)
1 Separator roller
2 Feed roller
Appendix C: Theory of operation
547
2 1
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