Lexmark 3100 mfp Installationsanweisungen

If you need to transport the scanner, follow these instructions to 
relock the scanner:

Failure to lock 

the scan mechanism before 
moving the unit can cause 
internal damage.

Raise the scanner high enough to move the switch down to the 
locked position.

If you experience problems with papers double-feeding through the 
automatic document feeder, the pad assembly may be worn. 

To replace the automatic document feeder pad:

Turn the scanner off.

Open the automatic document feeder.