A friend of mine has a HP Deskjet 940c. The paper-feed is not working at all. Whatever mechanism lifts the paper up to the paper-rollers, does not lift it high enough for the rollers to catch it. HP's website does not refer to this problem anywhere. Probably all HP 900 series might have the same mechanism, a small metal lever near the rear, visible when you take out the paper-tray. Can't see HOW it is lifted, looks like perhaps an electro-magnet? Anybody know a solution?