Question about Canon CanoScan LiDE 600F Flatbed Scanner

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Scanner is on but get message "unable to open Twain source"

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Lock Switch and IF cable

Mine was doing the same thing. When I get on the program, before I click "acquire" to preview and scan, I click OFF the toolbox and then everything seems to be okay and I can go ahead and scan.

Posted on Dec 29, 2007

SOURCE: Scanner has stopped working

When I had the cable that came with the printer connected to the scanner, and the cable that came with the scanner connected to the printer, the scanner didn't work.

Changing the cables changed everything.

Posted on Mar 11, 2008

  • 111 Answers

SOURCE: canon scanner

TWAIN is the type of scanner driver that is used for this scanner. It is probably the most common type of scanning driver.

Did you install Toolbox? Not sure? Assuming this is Windows, click Start, All Programs, Canon. Look for open CanoScan Toolbox (4.9 I think). Once this is open, click the 'Settings' button. There should be a drop-down menu for 'Select Scanner'. Make sure this shows the CanoScan LiDE 25. If that scanner is not listed, then the scanner driver is not being seen or may not be installed.

Once it has been verified that the LiDE 25 is selected, click OK. Next, click the 'Save' button. Check the box for 'Display the Scanner Driver'. Now click the 'Scan' button at the bottom.
The next window that pops up should be ScanGear. If this happens, then everything is installed and the scanner is being detected properly. Attempt to scan or preview.

If there was a particular application you were trying to use and you are still having issues with it, please give those details.

Posted on May 19, 2008

  • 111 Answers

SOURCE: Unable to select TWAIN source

Reinstall the ScanGear driver and Toolbox.

http://consumer.usa.canon.com/ir/controller?act=DownloadDetailAct&fcategoryid=351&modelid=6624

Posted on Jul 09, 2008

  • 2 Answers

SOURCE: Error message

Hi toolpusher

Try going to CanoScan Toolbox > Settings and reset the 'defaults' button at bottom... this will restore factory settings and hopefully fix your problem... The other error message you can expect to get is "unable to scan - insufficent memory, check your **** space' (or something similar)... same fix works for both! ...Have had both messages on mine, sounds like a semi-regular conflict on some sort, but seems to be easily fixed. Good luck :-)

Posted on Sep 30, 2008

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1 Answer

Unable open twain source please


This is an issue with the Driver Installation, Get the drivers Uninstall and reinstalled from the CD.

May 11, 2013 | Canon CanoScan LiDE 25 Flatbed Scanner

1 Answer

AFTER LOADING SOFTWARE I COMPLETED THE TEST, IT THAT OK BUT WHEN I TRY TO SCAN, PRINT COPY OR ANYHING IT TELLS ME UNABLE TO CONNECT TWAIN SOURCE


Hello.

Give this a try (found online):

Download Irfanview:

http://download.cnet.com/IrfanView/3000-2192_4-10021962.html

Open the main app "i_view32.exe"

With the scanner hooked up, click onto the "file" (tab)

Click "Select TWAIN Source .." and select your scanner in the source box (if it is listed, the driver is functioning)

Click file (tab) then "Acquire"


Hope this helps.

Sep 15, 2011 | Canon CanoScan LiDE 60 Flatbed Scanner

1 Answer

UNABLE TO OPEN TWAIN SOURCE


I a have many years reparing canon scanners so here is my suggestion for you.

You didnt specify what scanner you have but your problem is a common one. I would go to the website of the manufactuer of your scanner and download the latest drivers (try googling the make and model of your scanner and adding drivers on the end of it), which will include the twain drivers you need then I would try the scanner again. I think this will correct your problem.

I hope this helps you out.

Mar 05, 2011 | Office Equipment & Supplies

1 Answer

When i try to scan i get this message: unable to open TWAIN source Please check connection then re-start Toolbox the connections are tight


Driver mismatch - the driver of the scanner has forgotten the location of the TWAIN driver because another software has been using it lately. Follow this
http://weblogs.asp.net/jeffwids/archive/2009/11/02/canon-scanner-unable-to-open-twain-source.aspx

Feb 20, 2011 | Canon CanoScan LiDE 30 Flatbed Scanner

1 Answer

My computer is unable to open twain driver


you may need to reinstall the twain driver at this time, or use a different application program inorder to scan
appreciate your kind comment

Apr 12, 2009 | Canon BJC S600 InkJet Printer

3 Answers

Unable to select TWAIN source


tried uninstallin and installin canon scanner drivers..nothing works..still seeing unable to select twian source..

so i tried an alternative..here we go..
on vista 64 os/vista any version..click Start>All programs>Windows fax and scan

next click new scan on top and that got me going.

some say there are issues with the way usb talks to old scanners with new operating systems like mine (vista 64). hope it helps until you find the actual cure.

Jun 24, 2008 | Canon LIDE20 Flatbed Scanner

1 Answer

"Unable to open TWAIN server" Please assist


For any device to work you need 'drivers'. It is difficult to find a driver for an old product with a new OS like vista. You can try to get drivers for XP or Win2000 and use them.

S. Mohan

May 29, 2008 | Office Equipment & Supplies

1 Answer

Lock Switch and IF cable


Mine was doing the same thing. When I get on the program, before I click "acquire" to preview and scan, I click OFF the toolbox and then everything seems to be okay and I can go ahead and scan.

Nov 27, 2007 | Canon CanoScan LiDE 25 Flatbed Scanner

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