Was here twice. Both times they said 'our scans look like a waterfall '. By the time I got there, the problem wouldn't repeat itself both times. They definitely had the scans on more than one computer. It seems like it did it a few consecutive times about an hour or two before I got there, but not when I arrived. I cleaned & reseated the connections between the ccd & scanner boards. I flashed up the latest firmware. All the copies I made, & all the scans I sent to myself and the different terminals all came out correct. They called a month & a half later with the same thing. When I got there it was the same situation. I tried a scan board from another machine to see what would happen, but apparently it wasn't compatible & froze up the machine. I considered changing the ccd board assy. but that looks like an involved operation that would take too long to pop it in & out just to test. The closest I could find to a scanner calibration was sim 48-1 to make sure everything was at default. On the following attachments, the arrow indicates the direction the originals were fed in the doc feeder. I tested both adf & flat glass. As I said, it never did that for me. They've had this machine for a few years without this problem. It should happen all of a sudden temporarily, go away for over a month, come back again briefly, then go away again before I get there ? It seems to me if it were a board, it would be a permanent defect until it was changed. If it was software, what is there besides firmware ? After observing it, I can't detect a mechanical fault. Strange days indeed.
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