2nd sides are grey through a dual scan ADF (DF702)

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  • blackcat4866
    Master Of The Obvious

    Site Contributor
    10,000+ Posts
    • Jul 2007
    • 22927
    #16
    Re: 2nd sides are grey through a dual scan ADF (DF702)

    You might check that the timing of the cleaning brush/white plate is correct. If it's off by 2 teeth on the timing belt, the white plate doesn't stop in the right position. It's really hard to describe the timing marks. The way I did it was to bring along a scrap ADF, and remove front and rear covers. Then compare the position of the flag, and roller. Keep in mind that the roller turns when you open the door, so peek in through the holes in the frame with the door closed. I don't know if you can make anything of the pictures but here they are:

    DF702 Front Marks.JPGDF702 Rear Timing Marks.JPG

    In the first picture there are mark on the outer edge of the bronze bushing which you can't really see with the clip on. There are marks off center that align with the flat of the shaft. On the rear ... well I see that paint mark I made on the disk/flag, but I have no idea what I was thinking at the time. =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

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      • Guy Milner
        Technician

        50+ Posts
        • Nov 2013
        • 61
        #17
        Re: 2nd sides are grey through a dual scan ADF (DF702)

        Originally posted by blackcat4866
        You might check that the timing of the cleaning brush/white plate is correct. If it's off by 2 teeth on the timing belt, the white plate doesn't stop in the right position. It's really hard to describe the timing marks. The way I did it was to bring along a scrap ADF, and remove front and rear covers. Then compare the position of the flag, and roller. Keep in mind that the roller turns when you open the door, so peek in through the holes in the frame with the door closed. I don't know if you can make anything of the pictures but here they are:

        [ATTACH=CONFIG]30482[/ATTACH][ATTACH=CONFIG]30483[/ATTACH]

        In the first picture there are mark on the outer edge of the bronze bushing which you can't really see with the clip on. There are marks off center that align with the flat of the shaft. On the rear ... well I see that paint mark I made on the disk/flag, but I have no idea what I was thinking at the time. =^..^=


        Hi, thanks for the post.
        We have previously swapped the complete DF-702 and the problem remained on the original machine.
        We've had plenty of issues on the DF-701 with the cleaning roller/brush (over the slit glass) being out of position, but his is the first time a dual scan adf (CIS) has caused us major problems.....

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