Question about Canon CanoScan LiDE 80 Film Flatbed Scanner

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Canon Lide 80 Lock Switch error message.

I have the canon lide 80. Every time I try to scan I get a message saying "Release the lock switch, detach the I/F cable and reconnect. Scanner driver will be closed" I have been using the scanner with the same computer and OS for years. This just started happening a couple of weeks ago. I have opened the scanner. The lock switch is unlocked and I can't find anything that could be jamming it up. I would appreciate any help you could offer. Thanks!

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I had the same problem with this scanner after years of use. It stopped being able to calibrate itself so I couldn't use it on computers where it had never been installed on before (since on freshly installed computers, the driver requires calibration to be carried out at least once).

What I did was open it up, the two strips of plastic to the left and right of the platen can be used to remove the glass surface:
1. release the oval catch at the front of each strip by prying them upwards.
2. slide the glass towards the front of the scanner a bit till a gap appears between the end of each strip and the back of the scanner.
3. pry a bit of the back of both strips upwards and keep them away from the glass so they won't stopped by the back of the scanner.
4. slide the glass all the way to the back, you should be able to remove the glass since the two plastic strips aren't blocked anymore.

The reason the scanner fails to calibrate is because it tries looking for the black/white strip hidden between the plastic case and glass panel at the front but fails. There are three possible reasons:

1. Dirty glass panel/damaged black/white strip
2. Covered/dirty CIS module
3. Loose drive belt

Mine was a combination of the first three. A little washing and thorough drying of the glass panel and black/white strip and careful wiping of the imaging element and led strips (the black bar is the imaging element and the white bar is the led strips) fixed the problem.

I didn't have a loose drive belt, so I didn't look into fixing that, but I see a spring loaded catch holding the drive belt tension; if you have a loose belt, it may be worth it looking into that.

A tip of advice: If somehow, after reassembling your scanner after tinkering with it it still refuses to calibrate, you can do a dirty workaround by doing the calibration with the scanner disassembled and placing the black/white strip manually above the CIS module at the front, making sure to hold it steady. Your images will look a bit muted, but at least it works! (I did this step before I reassembled the scanner just in case it wasn't fixed, but thankfully its working now!)

Posted on Jun 29, 2010

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Had the same problem as you but was able to fix it. I basically plugged it in and out while switching the lock switch until it worked. Here is my theory:
The scanner strip got stuck further into the glass instead of tucked in behind the plastic, and i couldn't use the block switch (it was stuck)
When you plug the scanner in it moved a little, i would then be able to lock the switch.
I finally locked it into the position the furthest back, then unplugged it turned the switch to unlock and plugged it in, it worked.

My explanation is a mess but hope it helps you.

Posted on Jun 22, 2010

  • JoeSEHou Nov 28, 2010

    I had the same problem with an LIDE 25. The scanner is similar and similar (to the comments here) toying with it worked. I basically turned it on and told it to scan while trying to move the jammed lock switch after unplugging/plugging it in a couple of times. Voila! It scanned and worked OK, at least for now.

    Joe

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