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Thread: C364e scans

  1. #1
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    C364e scans

    Getting this from all scans..copies made from glass are good, only when ADF is used..Affects anything 8 x 11 LT or Ledger. Single pass ADF. Thinking the scan bed may have been damaged but really don't want to swap if at all possible. I have had 2 techs looking at this and they can't figure it out. 8570.jpg

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    Senior Tech 100+ Posts progoffice's Avatar
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    Re: C364e scans

    Maybe you can put a Dual Scan doc feed on it (if you have one) just to see if the second side does it as well. The image is processed differently (CIS), so it might be worth a try to help pinpoint the only scenarios where this is occurring.

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    Re: C364e scans

    Quote Originally Posted by progoffice View Post
    Maybe you can put a Dual Scan doc feed on it (if you have one) just to see if the second side does it as well. The image is processed differently (CIS), so it might be worth a try to help pinpoint the only scenarios where this is occurring.
    +1 to this test.
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  4. #4
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    C364e scans

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    Re: C364e scans

    Were I to make a guess, and I've seen this somewhere before, light source #1 or light source #2/#3 tips as it slides into position under the slit glass. The possible reasons can be:
    * a dry scanner rail
    * a damaged or missing slide (plastic disk that acts as a sliding surface between light source and the rail)
    * a damaged pulley or pulley bearing
    * a damaged rail (some scanners have a chromed metal strip adhered to the scanner frame, and that strip can come un-stuck)
    * or you might have some foreign object bumping one of the mirror assemblies, like a wire harness or light shield

    Were it me, I'd take off the glass and turn the drive hub towards the slit glass position slowly. Since it doesn't affect prints off the glass, one of the light sources must shift or be bumped in the last few millimeters of travel.

    What if somebody installed a cover screw that was just a little bit too long in the end cover of the scanner? LOL.
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  5. #5
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    Re: C364e scans

    Quote Originally Posted by blackcat4866 View Post
    Were I to make a guess, and I've seen this somewhere before, light source #1 or light source #2/#3 tips as it slides into position under the slit glass. The possible reasons can be:
    * a dry scanner rail
    * a damaged or missing slide (plastic disk that acts as a sliding surface between light source and the rail)
    * a damaged pulley or pulley bearing
    * a damaged rail (some scanners have a chromed metal strip adhered to the scanner frame, and that strip can come un-stuck)
    * or you might have some foreign object bumping one of the mirror assemblies, like a wire harness or light shield

    Were it me, I'd take off the glass and turn the drive hub towards the slit glass position slowly. Since it doesn't affect prints off the glass, one of the light sources must shift or be bumped in the last few millimeters of travel.

    What if somebody installed a cover screw that was just a little bit too long in the end cover of the scanner? LOL.
    =^..^=
    That last one... lol I could see something like that potentially wasting a LOT of time!

    Anyways, much of the same stuff, I have seen something similar when a mirror was not seated correctly (looked like it was but little jiggle it snapped into place).
    Last edited by Synaux; 10-03-2020 at 05:08 AM.

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    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: C364e scans

    Quote Originally Posted by Synaux View Post
    Anyways, much of the same stuff, I have seen something similar when a mirror was not seated correctly (looked like it was but little jiggle it snapped into place).
    This

    and seen distorted scanner frame do this too, not necessariliy visible, the bottom plate the ccd sits on can distort.
    If at first you don't succeed, try the way I told you how to do it in the first place.

  7. #7
    SanDiegoCopierRepair.com 1,000+ Posts
    C364e scans

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    Re: C364e scans

    Quote Originally Posted by emujo2 View Post
    Getting this from all scans..copies made from glass are good, only when ADF is used..Affects anything 8 x 11 LT or Ledger. Single pass ADF. Thinking the scan bed may have been damaged but really don't want to swap if at all possible. I have had 2 techs looking at this and they can't figure it out. 8570.jpg
    Saw something similar way back with something blocking the light path but only when scanner was near home position. Turned out to be small piece of hanging fuzzlike debris underneath slit glass area.
    Anything can be made to work if you fiddle with it long enough- San Diego Copier Repair.com

  8. #8
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    C364e scans

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    Re: C364e scans

    Quote Originally Posted by emujo2 View Post
    Getting this from all scans..copies made from glass are good, only when ADF is used..Affects anything 8 x 11 LT or Ledger. Single pass ADF. Thinking the scan bed may have been damaged but really don't want to swap if at all possible. I have had 2 techs looking at this and they can't figure it out. 8570.jpg
    Emujo, I've come across this a few times. Some very tired users rest on the machine, causing the Scanner base to tilt on the left front side, the only part where the base is not attached.Remove the covers, just loosen the screws and reposition the base.


    I believe it will be enough.
    Nothing like day after day

  9. #9
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    Re: C364e scans

    Quote Originally Posted by progoffice View Post
    Maybe you can put a Dual Scan doc feed on it (if you have one) just to see if the second side does it as well. The image is processed differently (CIS), so it might be worth a try to help pinpoint the only scenarios where this is occurring.
    Thanks, wish I had a spare dual scan for a C364e sitting around..E

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