Question about Canon PIXMA MP780 All-In-One InkJet Printer

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Does not print black, but both black cartidges have ink showing. Printer is not used much. Is the print head dirty?

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Yes, do a few head cleans from the software.

Posted on Jul 30, 2009

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2 Answers

False ink empty


Are you sure its exclamation mark?..
This warning message related to print head. (warn out). When you are replacing ink tube assembly use dummy print heads to do the priming (new ink tubes are empty & they have to fill with ink)..
Action: Remove all cartridges and print heads, switch on the printer follow the screen message.(Insert cartridges first next dummy print heads).once its recognizes cartridges then it switch over to print heads,insert dummy print heads. Once printer recognized the dummy print heads, printer will perform priming, during priming dummy print heads will filled with respective inks.(follow the display message)Remove dummy print heads & insert normal print heads. Wait till printer recognizes print heads, load the paper & wait till performs the calibration, once calibration is successfully done issue closed.
If calibration not successfully done, check align print out for which print head is not printed properly, replace it..
Pl ensure that minimum 50% ink levels required in cartridges before performing the priming. Best of luck..

Dec 03, 2012 | HP DesignJet 500 InkJet Printer

5 Answers

Epson RX620 printer will not print from black cartridge. I have all new cartridges and have run nozzle cleaning 4-5 times. Thanks. Gordon


Make sure the tape is removed from the new cartridges, remove the cartridges, restart the printer, place them back in, you might also want to clean the cartridge contacts if they are dirty.

Try reseting the machine to defaults from the menu.

Nov 01, 2008 | Epson RX620 All-In-One InkJet Photo...

1 Answer

Epson SX600FW - this will not print black even-though the cartridge is genuine and full. It will print the document in any other colour than black


You might need a reset as the B&W cartidge has not been detected. So to reset remove your printer from the PC and uninstall the printer software. Now reinstall the printer software and then connect the Printer to be detected and installed. Check printer properties to see the ink levels.
Use head cleaning before a test is taken . It is possible that the head is not reacting to the need of the command , can be an issue with ink drying , can
also be poor ink cartridge contacts

Apr 06, 2011 | Epson Printer

1 Answer

I have an Epson NX400 printer but the yellow and black ink test pages are showing gaps and missing lines. I replaced both ink cartidges twice and did the head cleaning and nozzle check but nothing seems to...


Try to print something that is pure yellow and pure black. Set it to BEST PHOTO. If you see gaps or missing lines, your print head could be clogged. You will need to use a cleaning solution to remove the clog.

Jan 16, 2010 | Epson Stylus NX400 InkJet Printer

1 Answer

How to check whether the black in k cartidge is


If its defective it wouldnt print or you would get an error message. If you are having quality concerns then the print head is probably clogged. Nothing you can do except replace the cartridge because it has the print head built into it.

Oct 05, 2009 | HP DeskJet 840c InkJet Printer

2 Answers

Faint print out despite ink level not finish


is it a refilled one or not? try changing the catridge

Jul 09, 2009 | Epson Office Equipment & Supplies

1 Answer

For a while the black ink wasn't printing and only the color... and because I was not able to print using black ink, I stopped using printer, and now color doesn't even work It just prints blank pages....


The print head is clogged. I had the same problem with only the black ink. I tried to soak it over night and let it sit on a paper towel soaked with windex. this didnt work so I figured it was time to replace the printer as the print head was probably just as expensive as to buy a new one. So with nothing to loose I got out my trusty can of WD40 removed the print head, removed the ink cartridges from the heads, sprayed the bottom and filled the top where the ink cartidge sits and within 15 minutes the WD40 began to flow on the paper towel. After a while I cleaned out the excess WD40 and replaced the cartridges and head to the printer and it worked perfectly. Good Luck. You have nothing to loose.

Joe B

Jan 27, 2009 | Canon MultiPASS MP390 All-In-One InkJet...

2 Answers

New cartridge won't print


  1. Make sure you removed the tape from the ink cartridge.
  2. Press the <Menu> button on the printers operation panel.

  3. Press the left [<] or right [>] arrow buttons to select [MAINTENANCE].

  4. Press the <Set> button.

  5. Press [<] or [>] to select the cleaning setting you want. Select [HEAD CLEANING] for normal print head cleaning. Select [HEAD REFRESHING] for deep print head cleaning.

    Note: [HEAD REFRESHING] uses more ink than [HEAD CLEANING], so perform [HEAD REFRESHING] only when necessary.

  6. Press <Set>.

  7. Print a Nozzle Check Pattern and perform at least two Head Refreshing if the pattern is not correct.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Nov 26, 2008 | Canon MultiPASS F80 All-In-One InkJet...

1 Answer

Epson cx6600 printing only magenta even with new cartidges


Try remove and shake the inks and reinstall it back in and test to print. If you have tried more than 4x with the head cleaning it might be your ink pads inside the printer is clogged. Is this still under warranty? You have to call Epson they might help you out with it.

Oct 11, 2008 | Epson Stylus CX6600 All-In-One InkJet...

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