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  1. #1
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    Sharp MX-B402 Glass Fogging

    Hey Sharp guys, has anyone had the underside of the scan glass get fogged ( on a MX-B402)? I just a week ago disassembled (to get to) and cleaned the underside of the glass. It is starting again. Any ideas why it might be happening, what seems to be so frequent, or at all for that matter. Machine is installed in a nice clean office, so I don't believe it has anything to do with the environment.

    Appreciate any input.....thanks.

  2. #2
    Senior Tech 250+ Posts driving lots of miles's Avatar
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    Re: Sharp MX-B402 Glass Fogging

    We have quite a few of these machines still out and I agree that the glass is difficult to get off for cleaning. I have two thoughts, one that the paper has a lot of moisture and it is steaming from the fuser and the other thought is a chemical they are using to clean the machine or the environment around the machine or office due to covid.

  3. #3
    The Wolf 1,000+ Posts mojorolla's Avatar
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    Re: Sharp MX-B402 Glass Fogging

    Very common on these boxes. Simply dis-assemble the entire top half of the machine, remove the ADF and scanner, remove the platen and clean.
    Easy peasy !
    I cringe every time I walk in and see that haze.
    I also believe the fuser causes this as the fan is on the rear frame, not above the fuser.


    Failing to plan is planning to fail!!!

  4. #4
    Service Manager 10,000+ Posts
    Sharp MX-B402 Glass Fogging

    Phil B.'s Avatar
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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by mojorolla View Post
    Very common on these boxes. Simply dis-assemble the entire top half of the machine, remove the ADF and scanner, remove the platen and clean.
    Easy peasy !
    I cringe every time I walk in and see that haze.


    you might want to try RainX Antifog...

    clean glass apply rainX .. worked for me years ago on a Ricoh is a chemical environment

    reduces build up

  5. #5
    The Wolf 1,000+ Posts mojorolla's Avatar
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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by Phil B. View Post
    you might want to try RainX Antifog...

    clean glass apply rainX .. worked for me years ago on a Ricoh is a chemical environment

    reduces build up
    I have done this on the slit glasses but never the underside of a platen. In these boxes, I fear the RainX would pool the moisture into droplets and then drip onto the lower scanner components


    Failing to plan is planning to fail!!!

  6. #6
    Service Manager 10,000+ Posts
    Sharp MX-B402 Glass Fogging

    Phil B.'s Avatar
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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by mojorolla View Post
    I have done this on the slit glasses but never the underside of a platen. In these boxes, I fear the RainX would pool the moisture into droplets and then drip onto the lower scanner components



    i never had that happen.

    just remembered I used this trick on a copier just between the freezer and fridge units at the Winn Dixie distribution center when it was in Raleigh.

  7. #7
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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by Phil B. View Post
    you might want to try RainX Antifog...

    clean glass apply rainX .. worked for me years ago on a Ricoh is a chemical environment

    reduces build up


    Thanks, Phil for the suggestion.

  8. #8
    Service Manager 10,000+ Posts
    Sharp MX-B402 Glass Fogging

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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by CopierTechLady View Post
    Thanks, Phil for the suggestion.
    you're welcome Lady!

  9. #9
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    Re: Sharp MX-B402 Glass Fogging

    Quote Originally Posted by mojorolla View Post
    Very common on these boxes. Simply dis-assemble the entire top half of the machine, remove the ADF and scanner, remove the platen and clean.
    Easy peasy !
    I cringe every time I walk in and see that haze.
    I also believe the fuser causes this as the fan is on the rear frame, not above the fuser.




    Easy Peasy....HaHa....very funny!!

    Thanks, for responding and confirming it is a common issue on these machines.

  10. #10
    Master Of The Obvious 10,000+ Posts
    Sharp MX-B402 Glass Fogging

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    Re: Sharp MX-B402 Glass Fogging

    On Kyocera KM2050 family machines the underside of the slit glass becomes hazed with ozone, directly over the fuser. On those machines, we would use self-adhesive mylars to seal up the openings into the bottom of the scanner optics. Additionally, I would use self adhesive foam seals on the left side covers, because the covers seemed to channel the air directly onto the slit glass. Once the scanner was sealed up it took longer for the glass to haze.

    I don't know if you can use that information, but it might be a help to you. =^..^=
    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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