My C7280 is printing at an angle

HP C7280 REPLACED ALL CARTRIDGES - STILL WILL NOT PRINT

This means there's a failure in your printer's pump motor.
If you are still under warranty, contact HP's Customer Service here : http://welcome.hp.com/country/us/en/wwcontact_us.html
If not, you can try your local computer store for a check-up but they'll probably suggest a new printer.
Hope this helped.
Please rate :)

Hello, Kim.

Here's some help from HP regarding your problem:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01078810&cc=us&lc=en&dlc=en&product=3204785

Hope this resolves your problem.

1. unplugged the power cord for 20 seconds (actually went a little longer)

2. Held down the # and 6 keys together and then plugged the power cord back in (still holding the keys).

3. held down # and 6 for about 10 more seconds after plugging the power cord back in and didn't get any messages but once and release them It was able to turn the power on.

The printer then printed an alignment page

hope it works, if so do rate the solution

I HP made cars they wouldn't start until you change your dirty motor oil.

The ink system failure message has a chance to be fixed or it may be a permanent issue. It can be pointing toward a firmware failure in the printer and if that is the case the following steps should fix it. Press and hold the ?*? key. Press the ?#? key and release both keys. Display should say ?Enter Special Key Combo? Press and release in sequence the "1?, ?2? and ?3? buttons. Display should say ?Support? and display the FW rev (something like R0631R) Mine reads R0631M . Press and release the right arrow button until the display says ?System Configuration Menu?. Press and release the ?OK? button. Display should say ?Hardware failure status?. If not there already, Arrow Key over to ?Hardware failure status?, Press and release the ?OK? button. Display should say ?Hardware failure status: Clear. Press OK to clear?. Press and release the ?OK? Button. Message changes to ?Hardware failure status Cleared. Press Cancel to continue?. Press and release the ?CANCEL? button as many times as necessary, so that, either the ?Welcome to Photosmart Express? screen appears, or, the ?Ink System Failure? screen appears. PLEASE DO NOT TRY TO PRINT AT THIS STAGE. Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet. Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer. Turn the unit on. The printer may display message ?USE POWER BUTTON TO SHUTDOWN THE PRINTER? followed by ?PRESS OK TO CONTINUE?. Press OK. The Printer will start the ?ONE TIME INK INITIALIZATION PROCESS?. Allow this process to complete and do not interrupt. Once the initialization process is complete, the printer will print out a Diagnostic Page. Good Luck!

have you use duplex unit?
you have to change your driver option both side print

Thanks

Does the c7280 use seperate Magenta and PhotoMagenta cartridges? If so make certain the right cartridge is in the correct slot.

Something is wrong with your Blach carrier or connections. Use a bit of alcohol and clean the array of gold contacts where the Ink cartridge plugs in. Most of the pins are shutter and piezo control (get the ink on paper) but a few do other stuff like check ink level, # of hours runtime, etc. This is very common problem with inkjet printers. Hope this helps.
Also... rub the contacts on the printhead with a pencil eraser to make them shiny and bright.

Cheers!

You can try a reset on the printer using the # and the number 6,holding them down while plugging in the power cord at the back of the printer.if the problem again comes up try thesame with # and the number 9 buttons
see if it works,else get your printer serviced