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Opening a scanner

Discussion in 'PC Hardware' started by mattman, 2007/12/20.

  1. 2007/12/20
    mattman

    mattman Inactive Alumni Thread Starter

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    Hi everyone,

    A relative has given me a scanner (very nice, "photo" detail). The problem is that the scans show dust particles and these particles turn out to be on the underside of the glass/screen (guess why it was given to me :D). Has anyone come across this problem before and actually opened it up to clean inside?

    I thought I might ask here before setting off to find web information (but I am not holding my breath in case no-one has come across it :)). Does anyone know of any scanner repair websites?

    Can I somehow reverse the polarity to make the dust "jump off" the glass (observing how dust is attracted to CRT montior and TV screens)? This might save me opening it up. [Who remembers their high school science? :D]

    It is an Epson 2480 Photo.

    Thanks if you can pass on any info.

    Matt
     
  2. 2007/12/20
    TonyT

    TonyT SuperGeek Staff

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    Not sure how to reverse the polarity of the guts and all contents, but it wouldn't hurt to place the scanner in front of one of those ionizeer air cleaners for a few days. It's possible the ionized air particles will "pull out" the dust in the scanner. (make dust settle to bottom) Other way would be to take the case apart, clean the glass and reassemble, but seal all gaps where air can get inside. (scanner lights are hot and probably create a draft that sukcs in dust particles.
     

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  4. 2007/12/20
    Rockster2U

    Rockster2U Geek Member

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    Maybe I'm too hard-headed to know any better but I've pulled a couple apart to clean the glass. Not a big deal. I even disassembled my Fujitsu Snap Scan because I was gettting lines (sheetfed that does about 15 pages a minute to .pdf's and duplexes). That proved to be a little testier. Just stay away from the corona wire or whatever its called.

    ;)
     
  5. 2007/12/20
    mattman

    mattman Inactive Alumni Thread Starter

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    Hi Tony, so much for my anticipation of a long wait for possible responses :eek: It's clocked it at 7 minutes :cool:

    Ionizing the air...interesting! At the least, I will probably need to use some sort of filter if I open it up to ensure a minimal amount of dust does not get back in.

    You got me started...I found a method for a HP scanner and now an enthusiasts website:
    http://ryxi.com/scanners/214-163-epson-v700-anyone-had-to-clean-underside-of-glass-read.shtml
    It seems quite possible.

    I might see if "reverse polarity" off the glass might still be an option.

    Matt
     
  6. 2007/12/20
    mattman

    mattman Inactive Alumni Thread Starter

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    Hi Rockster,

    You have eased my trepidation. Seems it can be done one way or another.
    Easy for you to say :p. I suppose I have to start somewhere (not that it has stopped me before :)).

    Matt
     
  7. 2007/12/22
    hawk22

    hawk22 Geek Member

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    Matt has your Epson a software dustfilter it is on my Canon don't know how good it is, but it seems to work with dusty negatives.
     
  8. 2007/12/24
    mattman

    mattman Inactive Alumni Thread Starter

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    Hi Hawk,

    It does have "dust removal ", but maybe like yours, it could be limited to negatives...it does not seem to be able to identify dust under the glass:rolleyes:

    I am going to see if a reverse polarity situation may work ( "charging a rod "...that sort of stuff, if I can find the materials).

    Some days, after wearing certain clothing in the car, on a dry day, I am sure I could "fry" the dust with an electrostatic discharge (or probably the whole scanner :):p)

    I will see if there are adjustments to the dust "remover ", it seems to be automatic from what I have come across so far.

    Matt
     
  9. 2007/12/24
    hawk22

    hawk22 Geek Member

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    Hi Matt, first of all merry Christmas to you and your Family.
    Have you been able to detect where the dust got in maybe a compressed air can could blow it out. If I get you correct than the dust is attracted to the underside of the glas and you are trying to make it drop, but this would be a continuous cycle as the glass will become static again and the dust will travel up again. So getting it out would be in my opinion the better solution and then try and seal it.
     

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