PRINTER DOES NOT RECOGNIZE PAPER SIZE

[LIVIO4]

HI EVERYBODY

MY OFFICEJET PRO 7720 IS NOT WORKING. EVERY TIME I TRY TO PRINT SOMETHING THE DISPLAY SHOWS AN ERROR MESSAGE. IT SAYS THAT THE PAPER SIZE DOESN'T MATCH WITH THE CHOSEN ONES (A3). BUT I PUT IN THE PAPAER TRAY A4 SIZE AND I CHOSE TO PRINT A4 SIZE. SO WHAT S THE PROBLEM? 

THANKS

[Alden4]

Hi @LIVIO4,

Welcome to HP Support Community.  

Thank you for posting your query, I will be glad to help you. 

Please check if the date and time are correct on the printer.

I recommend you to perform the following steps to isolate the issue and arrive at a fix.

1. Disconnect the power cable from the printer while the printer is still ON.
2. Disconnect any other cables if connected the printer.
3. Press and hold the printer’s power button for 15 seconds.
4. The printer should be directly connected to the wall outlet and not to a surge protector. Reconnect the power cable to print and the printer should power ON by itself. If the printer doesn’t power ON then please manually power it ON.

Use the Copy menu on the printer control panel to select copy settings and start the copy job.

• From the Home screen on the printer control panel, touch Copy.
• Select Document, ID Card, or Photo.
• Swipe to the desired number of copies, or touch the keypad, and then input a number.
• Under Tray Selection, select the tray and paper size.
• Under 2-Sided, you can select 1- or 2-sided copying.
• Touch to Preview, and then touch the preview to edit the image; from the Edit screen, you can crop, resize, and adjust the contrast of the copy.
• Touch Done to return to the copy screen.
• Touch the Settings icon, and then specify desired advanced copy settings.
• In the copy settings try to change the paper size.

I hope this helps. 
Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

^ Alden4
HP Support