Question about Epson Perfection V200 Flatbed Scanner

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Filmy appearance and spots on the underneath of glass

The underneath side of the glass on my scanner has a whitish filmy appearance.  It started out as a small perfect circular spot.  Now, it is in a much larger area, and has the appearance of a dirty window that needs cleaned.  However, this is on the underneath side and I can't get to it. (I assume the glass is not removable).  Does this have to do with the mercury light bulb or something?  It is resulting in poor scans, as it shows up on the photos I scan.

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  • dhecke Feb 01, 2009

    I have the same problem. Hope someone will help us!

  • dayirmiter Feb 07, 2009

    I recently bought a refurbished Epson V200 scanner. It arrived with the filmy blotches on the underside of the glass described by foxqueisser. I have read elsewhere that this film can be produced by fumes emitted from printed circuit boards, which are mostly isolated from the box in which the scanhead sits, but that this box sometimes has small holes in it for one (bad) design reason or another.

    I asked for a replacement of the first V200 and have since received two, both with the same problem. In all three cases the film appears on the right half of the scanning surface (the upper half of the scanned image). This corresponds to the area to the right of where the scanhead sits when the machine is idle. My guess is this position of the scanhead creates a relatively enclosed space in which the circuit board fumes accumulate.

    It might be possible to clean this film off the underside of the glass but it is not obvious how the user might get the top side of the scanhead box off so as to access it - though presumably the techs in the refurbishing deparment should be able to.

    I am pretty disgusted that they keep sending these functionally defective machines out to customers. Refurbs are supposed to be functionally sound with possible cosmetic flaws only. Obviously the condition of the scanbed glass is pretty fundamental to the function of a scanner!

    If somebody figures out how to take the scanner case top off, that would be a help to those who have bought these machines new and seen the problem develop over time. But if you're considering buying a refurb of this Epson model, save yourself the bother and don't.


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Today I opened my V200 without much problems. First unscrew the two screws under the lid. Then turn the V200 upside down. Lift the base plate up, gently, beginning at the back (a little twisting is needed). Take care not to force anything. It took me 10 minutes. Fold everything open like a suitcase, then clean the glass inside...
To close again start with the front (sort of click system)

Posted on Feb 22, 2009

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Wow, thanks Mythos 2! I'd taken those screws out and separated the top and bottom of the case at one end but the other end, near the control buttons, remained so tight I was afraid there might be another screw down there I couldn't see, perhaps hidden under the rubber foot on the bottom. So thanks for your persistence and courage in blazing the trail on this and for sharing your results with the rest of us. In the same spirit I will elaborate below my observations in following your lead.

Something that will make the whole process easier - especially the glass cleaning - is to separate the cover from the top of the scanner box. Place the scanner upright with its back (the side with the USB and power cable sockets) facing you. Open the cover to straight up vertical and position yourself so you can look down its inner surface. Observe the flat piece of plastic that acts as a hinge between the cover and the back edge of the scanbed. There are two round posts about the size of a pencil lead extending to the left and right from the bottom edge of the plastic hinge. These posts are the only things by which the cover is held to the scanbed and they slide up and down in a groove. At the top of this groove are lips that prevent the posts from being pulled straight up and out. Pull up on the right edge of the cover so that the right post is at the top of the groove while the left post remains at the bottom. Notice the indentation in the left retaining lip. This happens to be just the thickness of the hinge. Push the left side of the hinge into that indentation and you will find the right post now can be pulled up past its retaining lip. Voila, the cover is off! (Do notice there remains a short cable connecting the cover to the scanbed.) Remove the two screws to the left and right of the hinge groove and you're ready to take off the top of the scan bed.

I started with turning the scanner upside down, as suggested by Mythos 2, but was concerned about the scanhead flopping down at one end when I pulled up the base plate, to which it is attached. So here's an alternative.

Leaving the scanner upright, turn it counterclockwise ninety degrees so that now the control button edge is closest to you and the back of the box is to your right. Starting in the upper right corner, gently separate the top of the box from the bottom. As the top comes up, angle it a bit to the left and the upper left corner should also come loose. Along the front edge of the scanner box bottom are four half-inch wide posts, each with a rectangular hollow into which fits a corresponding tab on the top. The tabs extend horizontally in toward the center of the scanbed and have slight vertical protrusions that hook onto similar protrusions in the hollows of the posts. Angling the top a little to the left will free the first couple of these tabs.

The tightest fit between the top and bottom is in the corner nearest the control buttons, so leave that for last; it will come loose much more easily once the other three corners are free. Assuming the scanner is still in the same position relative to you, both the upper right and upper left corners should be loose. Maintaining some upward pressure on the top to keep it separated from the bottom, move down the left side (the front side of the scanner) gently pulling the edge of the top out and/or pushing the edge of the bottom in. As Mythos 2 has said, don't force anything. With a little patience, this technique will free the other two tabs along the left side. With the other three corners free, the corner nearest the control buttons will come loose with an audible click.

For glass cleaning I favor the old standby: a tablespoon of vinegar in a cup of water. Wipe this solution sparingly onto the glass with a soft cloth (you don't want to get any liquid under the edges) and dry by rubbinb in a circular motion with crumpled newspaper.

When your glass is clean and you're ready to put the top back on, start by fitting the tabs along the left edge into the hollow posts. Once these are snugly in place the right edge will pop back into position with a satisfying click. Replace the cover in a manner similar to the way you removed it, and you're done! Thanks again to Mythos 2 for leading he way here. :-)

Posted on Feb 23, 2009

  • Aingon Atelia Feb 10, 2013

    Great writeup! Works for the Epson Perfection V100 Photo scanner as well, exactly as you said. Thanks!


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