20 Most Recent HP LaserJet 4240n Printer Questions & Answers

mechanical check

Click here
Click on above link and download update driver then install in computer.Also download patch update and install.
Let me know if you need further assistance.
Thanks for using FixYa.

Might be on board network port faulty. Two ways infront of you. 1. Need to replace Formatter assembly 2. Add Zetdirect card(Network card). Replacing the formatter is costly affair, better go for zetdirect card 615N or 620N..Add on card provision available in this series.

Take print out of configuration page(menu-information-configuration page), chech the maintenance kit interval 2,25,000 crossed?
YES... replace maintenance kit & Swing plate assm..
NO... check fuser sleeve surface arrested with toner?...Replace fuser...

Hello,
This is a link to the download site, its probably the one you were on, but just to be thorough. http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=457003&lang=en&cc=us&prodTypeId=18972&prodSeriesId=456989&taskId=135
With that out of the way, I was able to download a driver without issue. I believe that your firewall may be blocking it. Try disabling it long enough to download it.

Put paper in the manual feed tray. Print. When the page gets half way into the printer, open the cover. Remove the toner. Look down at the paper. Is the right side lighter than the left? If yes, replace the toner cartridge. I don't believe that a fuser could cause your problem.

Make sure the paper path is clean and that all corona txfer wires are clean too.

If it's just one document that fails, it isn't the printer.
Something is not set up correctly in that document.

Get it printed anyway that you can.

Most likely this is being caused by the fuser. More specifically the fuser film. The fuser is the part that gets hot and "fuses" the toner onto the paper. When the film, which is a non-stick material starts to go bad a small amount of the toner "sticks" to the film and is then re-applied to the paper in a much lighter form a couple of inches down the page. Depending on what your local service options are you can have someone come out and install a new fuser film onto your existing fuser unit. This is the solution I use most for my customers. The cost is around $150 to $180 for parts and labor. A new fuser, which you could install yourself is around $225 to $250 depending on your sources. You can order these online pretty reasonable. Just do a search for HP 4240 fuser unit.
Since you have already tried the toner cartridge then 95% sure the problem is in the fuser.
Good Luck and Thank You for using Fixya.
WheatlandServices

Start by upgrading the Firmware. Go to www.hp.com, enter the printer type, select the OS, drill down to Firmware. Click Download. Click the README and please read it.