Question about HP LaserJet 2420 Printer

2 Answers

HP 2420dn Event log page lists 49 00FF Printer Error. When first purchased printer connected perfectly with Parallel cable and worked for years. Then connected via USB and no problems. Never installed the JetDirect to connect via network. Moved printer to new location and connected to new pc with USB. PC cannot detect printer, so I am unable to install it. Appreciate your help. Thanks Vanessa

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  • mmmagic885 Aug 24, 2010

    Hi Silverdragon

    I appreciate your prompt reply. Apologise for not explaining OS.

    Windows XP Prof SP3

    I have downloaded the file you indicated. It is the same file I used to try to install the printer.

    The file installs ok but the printer is not recognised as a USB only as a Parallel (I have no parallel cables connected).

    I changed the USB cable and I did the same installation on my second desktop, same OS etc.

    I cannot find the DVD that came with the Printer. I will try to purchase one if that will solve the issue.

    I'd appreciate your further advice.

    Thanks again




2 Answers

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Firstly, try it on another Computer, or you can swap/change the usb port (try plugging in on another usb port, i guess at least you've tried this.). If it's not detected even on another computer, then get a new usb cable and try again.

This could be a problem with the usb port on the computer or the usb port on the pirnter or the usb cable itself. Once you try it on another computer, you'll be able to know what's the cause.

Let me know if the problem persists, Good luck.

Thanks for using FixYa.

Posted on Aug 24, 2010

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OK what you need to do, is do NOT simply just install the driver, you need to actually use the DVD that came with the unit and install this way, until the proper software is installed, Windows will NOT recognize it. You first need to install the HP software FIRST, then reboot, then it should be detected, and then it will install the driver.
DO NOT plug in the printer, BEFORE installing the software, and ONLY plug in your printer, when asked, OR after you have installed and rebooted.

Please download your software from this website below.

You didn't indicate what OS you are using, IF Vista Win 7, then you MUST obtain an exact driver for that OS, OR install in Compatibility Mode for XP SP2. Also it MUST be done as Administrator. IF a 64Bit system, and you DO NOT have a specific driver written for Win 7 or Vista, 64 bit,you may have to turn OFF Digital Driver Signing, Press F8 at boot up and select from bottom menu. If this is the case, this MUST be done each and every time you use it.

Posted on Aug 24, 2010

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Initialization failed - Unable to acquire TWAIN-compliant device



I have seen your message stating that "Initialization failed - Unable to acquire TWAIN-compliant device" error is received when trying to connect USB-Parallel type to your Laptop.


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Hence, I recommend you to use only Parallel cable to connect your Printer to the Laptops.


I hope that this will resolve the issue for you.


You can email me at if you need further assistance.



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