Question about Canon CanoScan 5000F Flatbed Scanner

1 Answer

Scanner prints just black sheet

My Canonscan 5000 goes through the motions of scanning a document, but then prints just black sheets of paper, no printing of document at all. I have downloaded new drivers, uninstalled the program and reinstalled it again. Unplugged all cables and replaced these. Any ideas of what is happening and how I can fix this?

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  • Anonymous Dec 05, 2008

    I have the same black print problem and have tried uninstalling and reloading driver and toolbox to no avail. As soon as try to preview get black screen. Thought it might be the bulb but has the same effect when trying to scan film

  • tn_56 Feb 25, 2009

    I have exactly the same problem. The scanner worked fine the last time I used it, but now for some f...ing reason I only get a black preview. The printout is completely black either from twain import or directly from the 'COPY' function on the scanner. The lamp is on during scanning, but the result is BLACK. Great mystery!!

  • Luke Mancell
    Luke Mancell Mar 03, 2009

    I've had 2 of these do the same thing. I'm going to give Tore Nilsen's solution a go.

  • Luke Mancell
    Luke Mancell Mar 19, 2009

    I followed this solution. It worked perfectly. Thankyou Tore. You've saved me buying a new scanner.

    Rather than cut the plug off the new power supply I bought a male plug and made an adapter/dongle out of the plug I'd cut off the old power supply. Easy to do and that meant I could return the plug if this solution didn't help me.

    The new unit was about AUD23 plus the plug at about AUD3.

    Luke

  • Luke Mancell
    Luke Mancell Mar 19, 2009

    I followed this solution. It worked perfectly. Thankyou Tore. You've saved me buying a new scanner.

    Rather than cut the plug off the new power supply I bought a male plug and made an adapter/dongle out of the plug I'd cut off the old power supply. Easy to do and that meant I could return the plug if this solution didn't help me.

    Luke

  • Anonymous Mar 22, 2009

    Thank's Tore. I had the same problem, and solved it thanks to you. I'm not a handyman, so I bought a new powersupply by Convena, Oslo - Norway (312 kr = 60$). Regards another norwegian: øivind

  • Anonymous Mar 24, 2009

    Many thanks for this full explanation Tore.  It explained an identical problem with a Canon D1250U2F scanner, proved by borrowing a friend's adapter with multiple plugs, one of which fitted.  Scanner works, I need a new power supply. At least its a bit cheaper although I was looking forward to a new one!

  • Anonymous Mar 25, 2014

    when i do back to back print/photostate command paper gets jam while in single page it easily prints.

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The mystery is solved!!
I live in Norway and my CanoScan 5000F has worked brilliantly until it suddenly started to display a black preview in ScanGear, black scanning and to no surprise,- a completely black printout.
My first thought was that the scanner-lamp had died,- but that was strange because I hadn't used the scanner that much. I hadn't made any changes to my computer system either. The operating system (Windows XP), scanner software and drivers were exactly as before.
I made a new testrun and saw the light come on from the side of the scanner and move along the platen as usual. The sound and operation of the scanner seemed to be all normal.
A quick check on the internet revealed that there were many other guys out there who had experienced the same problem. Some had tried new drivers, uninstalled and reinstalled, but to no luck. I also tried the same method, but was stuck with the same problem.

I have a background as an electronic service-engineer, and this mystery really gave me a good challenge. Why did so many people experience the same thing? Why couldn't Canon answer and give a reasonable explanation to the phenomenon? What was the common factor in all these cases?

Every scanner is connected to the mains via a power-unit. Mine is European standard with type nr. PA-08E. It is labelled with output DC 12V (stabilized!) and a rated current of 1.25 A at this voltage.

I brought the power-unit to my lab for a test. When I measured the voltage without any load (no scanner connected) it read 12 V as stated,- so it seemed to be ok.
But when I connected a load (a car light bulb 12 V / 3 W - equivalent to a current of just 0.25 A), the lamp just barely glowed and the voltage (that should be 12 V constantly) dropped to just 4 V.

This proved without any doubt that the power-unit was defect. It could no longer maintain a constant 12 V during load.

I had a variable power-supply in my lab that could be set to 12 V and connected to the scanner for a test. But Canon had made a very peculiar connection to the scanner by using a rare male power plug (with a center (+) pin inside). Normally a round hollow (female) plug is used on such power-units.
So I cut the DC cable a few centimeters from the power-unit, split the two leads 4 cm apart and dismantled 1 cm of insulation from each end. On my power-unit one of the leads were marked all the way with text, and this one proved to be the minus (-) lead connected to the outer (metal) part of the DC plug.
The two ends were connected to my power-supply (with correct polarity!), and the other end with the DC plug were connected to the scanner. Power-supply was switched on and my computer system was restarted.
I opened the Paint Shop Pro program, clicked 'Twain Acquire' and the ScanGear CS window appeared.
After this insident a calibration of the scanner is required: Close the lid with no document inside, click 'Advanced Mode >>' down right and then 'Settings' / 'Quality' / 'Calibration'. The scanner will do some adjustments for a few seconds and finish when the small calibration window close.
At last my CanoScan 5000F came back to life again. The preview was normal, and the scanned images as superb as they had been before.

Conclusion: Do not throw your scanner away! Buy a new power-unit with DC 12 V stabilized and at least 1.25 A. Brand is not important as long as it is of good quality and correct voltage/current, but cut and use the cable and plug from the defect power-unit as I described earlier. Remember to isolate the connecting area (+ and -) firmly.

Regards Tore Nilsen
Harstad, Norway

Posted on Feb 27, 2009

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