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

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HP 7780 stopped printing red. - HP Officejet Pro L7780 All-In-One InkJet Printer

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Hi,

First, check the color ink level of your printer, I will suggest you try reset the printer, follow the instruction below to reset your printer, if the problem still persist, replace the cable that connects the printer to the power outlet. If that did not still fix the problem, you will need to reinstall the driver of the printer,

1. Without turning the unit off, unplug the power cord from the back of the product.
2. Press and hold # and 6 keys.
3. While holding those keys plug the power cord back in.
4. Wait until the screen goes blank before you release those keys.
5. Follow on printer screen instructions.

If that did not fix the problem, try this,

  1. Unplug the power cable from printer while the printer is powered on.
  2. Press and hold OK and HELP buttons while plugging in the power cord. Wait for the screen to go black or blank before releasing the keys.
  3. Just turn on the printer and configure your printer new.

Posted on Jan 02, 2011

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Posted on Jan 02, 2017

  • 1602 Answers

SOURCE: HP Officejet Pro 7780 will not scan on Mac Powerbook G4

YOU WILL NEED DRIVERS FOR THAT DEVICE.

WWW.HP.COM/MAC
HP OFFICEJET PRO DRIVERS MAC 7780
OR
HP OFFICEJET PRO 7780 MAC DRIVERS
OR
HP OFFICEJET PRO 7780 DRIVERS

AND

CONTROL PANAL GO INTO NETWORKING AND SHARING FOLDER

PRINTING SHARING, OR PROPERTIES SETTING NEED TO BE CHANGED

DOES THE SYSTEM SUPPORT WIFI

MAKE SURE THAT THE ANTIVURAS PROGRAM AND FIREWALL IS HAS STOPPED YOU SCANNER TO COMMUNICATE WITH THE MACHINE, JUST SOME FINE TUNNING IN THE FIRE WALL MAYBE ALL IT IS.

ROD

Posted on Feb 09, 2009

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1 Answer

HP 7780 suddenly stopped printing in red. I have changed the cartridges several times. I am using brand new HP cartridges. Have cleaned the print heads, aligned several times, nothing has heled. The...


Hi Good day!!!
Maybe your print head is clooged (red)
Then most about 98% are more likely to be an ink clog which just needs to be unclogged using something like print head cleaning solution
Basically, if a print head has been left unused for some time... moisture inside the ink begins to evaporate and instead of liquid ink, a thick inky jelly begins to form inside the print head.

When this occurs white lines appear in prints and most people not realizing the problem, will replace their inks... But when that does not work. Some assume they have an electrical fault, and replace their print head, others will replace their printer !

But provided there is no obvious print head damage? In 98% of cases it simply needs a little patience and print head cleaning solution injecting directly into the print head to dissolve the dried ink trapped inside. This will dissolve the clog and allow your expensive ink to flow once again. Most will then print as new.

Thank you for using fixya

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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.

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HP 4L stopped printing. Red light flashes


May be some ilegal process, May be paper not in tray, find it

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Black ink problem with printout on hp7780


Always try replacing the ink cartridges first.

It sounds like the print heads in the 7780 are bad. Don't confuse the ink cartridges with print heads. The cartridges fit inside the print heads. You will need to change the heads. Here is a link to HP's how-to.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00841890&tmp_track_link=ot_faqs/top_issues/en_us/c00841890/loc:1&lc=en&dlc=en&cc=us&lang=en&product=2512010

Could have the same problem with the Dell.

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1 Answer

Blank pages from Word


That just means you put your spacer onto another page. You may need to back space until you reach you last word of your document.

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1 Answer

HP Officejet Pro 7780 will not scan on Mac Powerbook G4


YOU WILL NEED DRIVERS FOR THAT DEVICE.

WWW.HP.COM/MAC
HP OFFICEJET PRO DRIVERS MAC 7780
OR
HP OFFICEJET PRO 7780 MAC DRIVERS
OR
HP OFFICEJET PRO 7780 DRIVERS

AND

CONTROL PANAL GO INTO NETWORKING AND SHARING FOLDER

PRINTING SHARING, OR PROPERTIES SETTING NEED TO BE CHANGED

DOES THE SYSTEM SUPPORT WIFI

MAKE SURE THAT THE ANTIVURAS PROGRAM AND FIREWALL IS HAS STOPPED YOU SCANNER TO COMMUNICATE WITH THE MACHINE, JUST SOME FINE TUNNING IN THE FIRE WALL MAYBE ALL IT IS.

ROD

Feb 09, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

2 Answers

HP officejet 7780


You must replace BOTH ink cartridges to get a sucessful alignment

Dec 18, 2008 | HP OfficeJet 7410 All-In-One InkJet...

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Mac and hp 7780


I had the exact same problem but never could get my Mac to work wirelessly with my 7780 even though the box said it was wireless and worked with OSX....false advertising.  Enough of the problem though.
I set up my printer through my Airport Extreme network.  That solution worked sporadically.  I would get error messages that the computer could not open the printer.  I found clicking the "pause" print button and then clicking "resume" would often work but needless to say that became a pain.
So, my IT guy set the printer up through it's IP address over my airport extreme network.  The printed has worked flawlessly for the last week since this change but.....the fax no longer works and now the scanner takes about 3 minutes per page.
Overall, I have been a die hard HP fan for years but after the nightmares with the L7780, I will NEVER use another HP product.  The item cost me about $459 but I have lost or spent over $5,000 in diminished productivity and IT charges and it STILL DOESN'T WORK AS ADVERTISED!

Jul 10, 2008 | HP Officejet Pro L7780 All-In-One InkJet...

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