Question about HP Photosmart C4280 Aio Printer

4 Answers

Scanner keeps saying USB not connected

Hp All In One - keeps saying USB not connected. I have unplugged and plugged back in several times. Even changed the USB port used on the hard drive.

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  • bubbalicious Sep 19, 2008

    Same problem. Using Mac OSX 10.5. Have removed and reinstalled.

  • Anonymous Sep 22, 2008

    it say USB isnt conncted...

  • asetradius Sep 24, 2008

    Kept saying couldn't find USB. Tried turning off-on, pulling out and re-sticking the cable, even unistalling the solution center application. Now I cannot find where to download it again.

  • jrgropp Sep 27, 2008

    same problem

  • Anonymous Oct 01, 2008

    Same problem

  • Anonymous Oct 04, 2008

    says usb not connected, what do I do?

  • Anonymous Oct 05, 2008

    Same problem with osx-mac

  • ashleydrewda Oct 07, 2008

    Every time I try to scan something it says that the USB is not connected. Help?

  • Anonymous Oct 09, 2008

    Same problem here.

  • Anonymous Oct 11, 2008

    can't scan on mac osX...

  • Anonymous Oct 16, 2008

    why wont it work gosh dangit?!!!?

  • sdakroub Dec 05, 2008

    I keep unplugging it and re-plugging the usb.. its still not working. The printer is working fine, its just the scanner that won't work.

  • tenfour04 Jan 28, 2009

    I have the hp photosmart 4280 also, and my printer works fine, but when I try to scan something, it says USB not connected.

  • Anonymous Jan 29, 2009

    I have the same problem on my Mac.

  • Anonymous Feb 17, 2009

    yeah same problem

  • dancerchick1 Apr 01, 2009

    This is quite annoying



4 Answers

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Use the scan commands from the HP device manager, not the printer.

Posted on Jan 05, 2009

  • jmpopolo
    jmpopolo Feb 25, 2013

    Thank you so much, Gary. It worked.


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1. Use PDU
2. Download Ver 10 s/w & perform an upgrade (do not uninstall the old s/w, just perform an upgrade) you can download ver 10 from any other PS C models

Posted on Oct 17, 2008


Same poblem , prints fine but wont scan using windows XP

Posted on Oct 04, 2008

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  • Master
  • 564 Answers

Is this still an open issue?

Posted on Aug 20, 2008

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Posted on Jan 02, 2017

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Hi. So my family has an HP Photosmart C4280 printer/copier/scanner which we have had for a few years. It is connected to our Windows XP. It has always worked up until lately. The printer and copier work...

No its not like that , There must be some software issue, the other thing can be that you must have attached new USB devices because of which the scanner is not getting as much as power needed from USB and hence telling that its not connected.. Try to remove all the USB devices and keep only All in One attached and then try to scan.

You can also try to scan from Scanner and camera wizard

You can find it under
Control Panel >Scanner and Cameras (If its in classic view)

Control Panel >> Printer and other hardware > Scanner and Cameras (If its in category view)

Please let me know if it does not fix the problem then we will go through extensive troubleshooting

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Reset your printer. To do this, turn off the printer using the power button, remove the cartridges, unplug the power and the usb cables. Press the power button for several times. Connect the power cable and also the wall jack, power on (don't connect the usb cable). While the printer boots up, keep pressing power button several times. Leave it for few minutes and again switch off. Now connect the usb cable as well and insert the cartridges. Shutdown the computer. Power on the printer and also the computer (Note when you power off/on, use only the power button). This will fix your problem. If possible, please reinstall the drivers for your printer before you restart it with the pc. Good luck. Thanks for using FixYa.

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I had similar problem with my UMAX scanner on numerous occasions. I now have this pg earmarked for quick reference! may help I don't know for sure but it is an easy test and if it works your good to go!
It is important that you connect the scanner's power and USB cables in the following order:
1. Plug the power adapter cord into the scanner and into an outlet. The scanner's power will then be on.
2. Connect the USB cable to the USB port on the
back or front of the computer.
NOTE: If you unplug the scanner's power ,you must also disconnect the USB cable from the computer. To resume use of the scanner, remove the power card, the the USB cable.

Sounds like a lot but the order is essential!
If it works, High lite Do unplug USB/unplug cable back of scanner/and plug cable back of scanner then USB!
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1 Answer

Keeps saying USB not connected

Ok - the reason this error pops up is because there is a software issue going on. If the software is correctly installed you will see options for where the scan will go in the computer.
Having said that there are several things that can cause a problem between the printer and the software;
1) You are connecting the printer by USB to router - you may print but will never be able to scan as this is not a networkable printer. Connect it directly to your computer and recomplete the setup portion to configure the scanner.
2) You have not finished the setup. At the end of the installer you can setup the scanner but if you skipped this step you will have to redo it in order for it to connect. Click on the device manager in your dock and then next to information and settings there will be a little wheel. Click on the wheel and go to setup assistant. Complete the assistant and try to scan.
3) The printer is not grabbing the new software options - leave the printer turned on but unplug the power cord and wait for 30 seconds. Plug printer back in - when you do this it should initialize and will look to the mac for changes and the options should load.
4) Software missing - You MUST have the software for the printer installed for scanning function. Adobe and other programs cannot replace it - it has to be installed.
5) Software is corrupted. Uninstall the software (uninstaller is under applications in the HP folder) and then download ( and install the most recent full feature software and drivers for your operating system.
6) If all these steps fail you may have an issue with your computer and it's TWAIN drivers.

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1 Answer

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Disconnect (unplug from power outler) PC from power cable for 10 mins. Unplug scanner. Restart pc, plug back scanner. Restart PC and check if it works.
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Driver from Canon site
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The scanner keeps saying that my USB is not plugged in and it is

There is a workaround without messing with drivers. I have the same problem if I use the buttons on the v40 and try to scan. I get the V40 can not connect to the PC message.


Go to Control Panel-->Scanners and Cameras

In there you will find: Hewlett-Packard OfficeJet V40 Scanner

Right click and select Scan. It will then start the scan wizard which will scan your document.

Jan 26, 2008 | Office Equipment & Supplies

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