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Driver for D646U Scanner - Printers & Copiers

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  • jondrury24 Apr 12, 2009

    need a driver for a canon d646u scanner where can i get it

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This printer was only supported in the US for Windows 98/ME but it worked with XP. The odd thing is that foreign sites continued to offer the driver for vista both 32 and 64 bit. But the US site dropped it. Here's how you can get it working and not have to read Portuguese.

Order is important, follow these steps exactly...

1. Go to www.canon.ca, click on downloads, and then click consumer products. Then click scanners and find the d646u on the list. Click the download drivers link after this.
2. Download number 1, 2 and 5 on the list.
3. Install them in the following order: 5(deletion utility), 2(scanner drivers: it doesn't matter what folder you open them to), and then 1(toolbox).
4. The computer will reset after toolbox is installed.

It should work after all this.

Posted on Jul 31, 2008

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On scanner the x is light up and printer will not scan . What is my problem?


Make sure the scanner usb and power leads are securely seated the drivers for the scanner might have been corrupted you might have to uninstall the scanner restart your computer then reinstall your scanner If your printer/scanner came with an installation disc the drivers could be on it you might have to uninstall the printer/scanner restart your computer then reinstall the printer/scanner and its drivers click start control panel administrative tools computer management device manager scroll to ports(COM&LPT) + to expand you should see a communication port and Ecp printer port you might see a yellow Question/exclamation ? ! mark or a red X this will mean you need to install a new driver for this device right click to update driver select properties again you will have the similiar options also have option to troubleshoot

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Please find these links to help;

www.nodevice.com/driver/CanoScan_???D646U_???ex/???get36927.html

www.canon-europe.com/For_Home/Product_Finder/???Scanners/Flatbed/CanoScan_???D646Uex/???index.asp

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Hello,

Driver installer for your CanonScan D646U is available on Caon US Support site here. Just provide proper OS and your on your way downloading.

Don't forget to rate.

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Hi there,
  • Unplug the printer cable from the computer.
  • Unistall the printer drivers from Device manager and also unistall the all the printer appications
  • restart the computer
  • try to download drivers from the website
  • after installing drivers and software it will ask you to connect the printer.
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Scanner:
Hi there,
  • Unplug the Scanner cable from the computer.
  • Unistall the Scanner drivers from Device manager and also unistall the all the Scanner appications
  • restart the computer
  • try to download drivers from the website
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  • then you can connect the Scanner and and try to Scan.
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Whatever it says, right click on it and select 'Uninstall' and allow it to be uninstalled.
Remove the USB lead from the scanner.
Re-boot the Computer.
Once windows appears and is ready to use, re-install the scanner driver do not plug in the scanner yet!.
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1 Answer

TWAIN error


Here is an actual e-mail from a Canon tech regarding this problem:

Thank you for your recent enquiry regarding your Canon product

Please accept my apologies for the delay in contacting you regarding the
problems you have been experiencing with your CanoScan D646U.

I shall firstly answer your query regarding the TWAIN drivers. There are four
main TWAIN files that are pre-installed with Windows, TWAIN.DLL, TWAIN_32.DLL,
TWUNK_16.EXE and TWUNK_32.EXE. These are included with the scanner drivers to
ensure that a compatible version of the files are installed, otherwise the
scanner will not work. During installation these files are checked for and, if
a later version is already installed, the versions from the disk will not be
installed. I can assure you that the scanner driver will work OK with version
1.7 of the TWAIN drivers.

For the scanner to communicate correctly the Still Image Services needs to be
running in the background. To check this please open the Control Panel and look
under Services in Admin Tools. Please check to ensure that the Still Image
Service is running correctly.

If all this is OK, I would recommend removing the driver in the following way.
With the scanner still connected go to Device Manager. Under Imaging Devices
right click on the CanoScan D660U and select uninstall. After this please
disconnect your scanners USB lead and remove the rest of the driver using the
DELDRV utility. Before reinstalling the driver you must restart your PC and
then reconnect the scanner.

If there are still problems please check that the driver has installed
correctly. The following files should be shown in the driver section when you
look at the scanner properties in Device Manager.

C:\WINNT\SYSTEM32\D064UCPL.DLL
C:\WINNT\SYSTEM32\D064UFW.DLL
C:\WINNT\SYSTEM32\D064UFW.INI
C:\WINNT\SYSTEM32\D064UFW.PLG
C:\WINNT\SYSTEM32\D064UUD.DLL
C:\WINNT\SYSTEM32\DRIVERS\USBSCAN.SYS
C:\WINNT\SYSTEM32\SPOOL\DRIVERS\COLOR\CNS60N.ICC
C:\WINNT\SYSTEM32\SPOOL\DRIVERS\COLOR\CNZ005.ICC
C:\WINNT\SYSTEM32\UCS32P.DLL
C:\WINNT\TWAIN_32\D64U\CANOIT32.EXE
C:\WINNT\TWAIN_32\D64U\CISDS.DS
C:\WINNT\TWAIN_32\D64U\CSUI.CNT
C:\WINNT\TWAIN_32\D64U\CSUI.DLL
C:\WINNT\TWAIN_32\D64U\CSUI.HLP
C:\WINNT\TWAIN_32\D64U\D064UA.DLL
C:\WINNT\TWAIN_32\D64U\D064UUI.DLL
C:\WINNT\TWAIN_32\D64U\IMGENH.DLL
C:\WINNT\TWAIN_32\D64U\IOP.DLL
C:\WINNT\TWAIN_32\D64U\ITLIB32.DLL
C:\WINNT\TWAIN_32\D64U\LTKRNION.DLL
C:\WINNT\TWAIN_32\D64U\README.TXT
C:\WINNT\TWAIN_32\D64U\SCANINTF.DLL
C:\WINNT\TWAIN_32\D64U\SYSERROR.EXE
C:\WINNT\TWAIN_32\D64U\TPM.DLL

All of the files mentioned above that are listed as being in the TWAIN_32\D64U
folder are the exact files that should appear in that folder if you look in
Windows Explorer.

A further cause of the TWAIN error occurring is if there is a conflict with
another TWAIN compliant device, such as a Digital Camera or scanning device
(including Multifunctional devices. If you have such a device installed try
removing its software before reinstalling the scanner driver.

We hope this information is of use to you. However, should you require any
further technical assistance, please do not hesitate to contact us quoting your
Incident number.

To contact us via email, click on the following link:

https://self-service.canon-europe.co...ss.cgi?LANG=en.

Note: Please do not reply to this email using your 'REPLY' tab.

Kind Regards,

Gavin O’Mahony
Product Support Specialist
RCC UK

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