Need to clean under-side of scanner glass plate - How?
The underside of my scanner glass plate has developed a film on it that is affecting the quality of any scanned photos. How can I remove the glass so I can clean it? The scanner seems to be molded tight around it.
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Thecoverplateisabove the glasswhite surfaceof the scanner.If thisisthe samedirtystainswill come outon copies. Theglassmust be clean. By feedingthe original documentsthrough the ADF,the scanner lampis no longerthe pathto scan,the ADFis responsible forpassing theoriginaldocumentover thescanner, whileit remainsstillplacedon the sideunder athinglassistoalargeglass side.Thisalsomust be clean,otherwise youwill be black linesoneach pointor spot onthe glass. Good luck...
This is acutally easier than it looks. I just had the same problem with a cloudy film starting to form underneath the glass on my older HP 4400C scanner.
First completely remove the hinged top lid by lifting straight up on both long ends of the lid - notice the 2 hinges on the back end of the lid will come straight up and out of the body of the scanner, still attached to the lid.
Next look down inside the 2 hinge holes (on the main body of the scanner where the lid hinges just came out of) and you will see a screw in each hole. Remove both screws using a phillips screwdriver. This will allow the rear end of the scanner to come apart enough so you can now lift it up a few inches to separate it and get your hand inside there to clean the underside of the glass with a soft cloth - BUT JUST REMEMBER THE FRONT END OF THE SCANNER WILL STILL BE CONNECTED, so don't pull it too far apart because it could snap and break something that is still holding the front end together. (I could not figure out how to separate the front end piece, and then I realized I didn't have to).
So on the rear end of the scanner, now carefully pull the light upper colored plastic apart from the lower dark plastic just enough so you can get your hand inside the compartment and use a soft cloth to clean the underside of the glass. I just used a small piece of an old cotton t-shirt with a couple little dabs of water on it and then just kept rubbing the dirty areas on the underside of the glass over and over until all the dust film/streaks disappeared and the glass was once again clean and all clear.
Then gently lower the glass back down and line up the plastic pieces together on the rear end and put the 2 screws back in the hinge holes, and then reinsert the hinges in their slots and lower the lid back on top of the scanner glass and it is ready to go again !!
note where the dirt is located,unplug all wires from back, remove top hinged cover, undo 2 screws at the top, remove cover plate by gently tipping toward top, slide glass with plastic sides up and out, clean with approved cleaner, reverse to reinstall glass (plug in power cord prior to replacing top cover plate to check for any missed fingerprints or dirt on underside of glass), once your happy with cleaning complete the reassembally.
Cleaning the glass is rather simple. Take the 2 screws under the cover out. Now gently lift the top part of the scanner (some force may be needed). Then the scanner is in 2 parts and the glass can be cleaned inside and outside with a wet wipe glass cleaning pad. Dry the glass with a towel and inspect the glass with a lamp, that no cleanser remains are left. Now install the scanner in reverse order.
Hi, I had to dismantle my HPG55 to clean the glass and found the instructions at the HP website. The link to the site is below. The instructions are very clear, and there are also photos to help you along the way. I hope this helps.
I made contact with cannon and received this reply.
I was satisfied with the answer but the question still remained on how to remove the glass should i wish to do so.
Also after there answer... would there then be a problem if i did clean the reverse side.
Their answer was initialy this...
The foggy haze on the glass is actually an anti-glare treatment that has been intentionally applied to the underside of the scanner glass. This treatment lessens the glare from the lamp under the glass and provides better image quality. This haze may not appear uniform because of the shape of the scanner base and the components under the glass. However, the anti-glare treatment has been uniformly applied and the haze is as expected. The treatment should not affect the scan quality or output of the 8600F.