when i turn on my scanner it starts to make this grinding noise. when it turns on, the lower scanning unit moves to the starting position but it keeps trying to go forward even though it has no room to go. it then makes a grinding noise because it keeps trying to move. i took off the glass and tried to see if anything was blocking it but i could not find anything. if anyone has had this problem and knows how to fix it please let me know.
thanks
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