Question about Apple Canon CanoScan N670U Flatbed Scanner

6 Answers

Canoscan lide 20 Error; Release the lock switch, detach the USB cable and reconnect. Scanner driver will be closed.

I have a canon lide 20, whenever I try to scan, a window appears;

ScanGear CS
Release the lock switch, detach the USB cable and
reconnect.
Scanner driver will be closed.

I uninstalled all the related softwares and reinstalled them but it didn't work.
I installed the newer drivers from the canon website but still I have the problem.
I downloaded the Vuescan software and guess what, it surprisingly started to scan! Now I again tried to scan in arc photostudio, the error came again.
Now I'm scanning the registry with RegCure software.

Can you please suggest me something?

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  • 1 more comment 
  • del3 Jan 06, 2009

    Same issue for about 2 months.  Works sometimes, next time not. On MAC OSX 10.4.11  changing the switch doesn't fix it; reboot sometimes does

  • hieubeo19 Mar 26, 2009

    My USB is blocked by KAVPERSKY. How to release it. I just can copy files, read files. But I can't cut and delete them. Tell me: what should I do?

  • george_spamh
    george_spamh Feb 07, 2014

    I keep locking/unlocking/plugging/unplugging & nothing makes any difference, I keep getting the same error message, code 2,178,0. It seems to run through the scan before the message. When it's locked though, the scan doesn't start.

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6 Answers

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Hi.. there is a lock under the scanner you need to unlock it... lock it to prevent damage while transporting...

Posted on Mar 31, 2013

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Release the lock switch, detach the USB cable and
reconnect.
Scanner driver will be closed.

I uninstalled all the related softwares and reinstalled them but it didn't work.
I installed the newer drivers from the canon website but still I have the problem.
I downloaded the Vuescan software and guess what, it surprisingly started to scan! Now I again tried to scan in arc photostudio, the error came again.
Now I'm scanning the registry with RegCure software.

Posted on Dec 26, 2012

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Open scanner and full service all parts
and clean dust and west
use service oil and past steel road
and fix all scanner part when ready ur scanner

Posted on Apr 03, 2009

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Hey there i m also having the same i do whtever you told reassemble and clean all parts but still i have same problem. You know luckely its working for some time. someone have proper and best solution for this problem please tell

Posted on Jun 03, 2013

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Where place of the "Lock Switch" i want to unlock becuse i get problem for that

Posted on Apr 22, 2010

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Discovered that if I close M. Entourage, unplug & replug scanner USB, it will work

Posted on Jan 15, 2009

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