Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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I installed hp officejet pro l7780 but failed to calibrate.

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Partial reset the printer

  • Remove the power cable from back side of the printer while its ON.
  • Press and hold "#" and "3" button, while holding them both insert the power cable and release the button after 10 seconds.
  • If printer turns OFF, press power button to turn it ON.

Posted on May 26, 2011

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Reset the printer or update the drivers. You can follow the guide from Officejet Pro L7780 user manual

Posted on Dec 03, 2013

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Check the carriage block cable (head cable)

Posted on Oct 17, 2012

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How do i connect a laptop to the printer?


On your computer go to devices and printers. Make sure that it is selected as the default printer.
Right click on the printers icon . In the menu click on troubleshoot and follow any instructions.
Below is a link to the operators manual and installation manual.
If nothing works you may have to uninstall and the reinstall the printer.

HP Officejet Pro L7780 All in One Printer User guides

Sep 05, 2014 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

White Lines HP Officejet Pro L7780


Have you replaced the ink? Perhaps one color is low or one of the pin-heads is broken. If the pins on the printer have broken you will need a repair technician or just buy a new printer.

Feb 07, 2014 | Lexmark X5470 All-In-One InkJet Printer

1 Answer

Partial print on incoming fax


Check your incoming line and settings or try to reinstall the drivers. Also, check the user manual for HP Officejet Pro L7780

Jun 25, 2013 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Alignment of HP L 7780 failed. What are the steps to correct?


hello, you will need to run a cleaning cycle, you are looking for black printing, if not printing well, it might fail, if it does you will need #88 printhead. the black/yellow one. most times you will not need calibration to print, unless machine is stuck in that mode and won't pass. and won;t allow for print.

Oct 25, 2010 | HP Officejet Pro L7780 All-In-One InkJet...

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