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

1 Answer

Wont print black. I have done the nozzel check, cleaning, and head refreshing. I have also replaced the appropriate ink cartridges. Nothing seems to work.

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  • sandkhanson May 23, 2011

    Thank you Victor man

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  • Canon Master
  • 817 Answers

This sounds like a blocked print head. If cleaning does nothing then i would replace the print head with a new one and see if problem is solved. If still the same it could be a break in the ribbon cable to the carriage and possibly a fault within the purge unit. It could be a costly repair!!

Posted on May 23, 2011

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All of a sudden my hp 932c printer started printing funny in color. I was printing pictures and the prints came out like a heat resolution type picture. I then got new ink cartridges, it did not fix the...


quite often inkjet heads will dry up and clog. try a clean heads sequence in the printer properties panel. do this until it prints the clean nozzle page properly. If the ink cartridges have the print head attached to them (some dont) you can dab them on a paper towel with windex or vinegar until they show a nice clean line when dabbed. if you cant get the print heads out , then you just need to continue running the clean nozzel application until it prints the test nozzel job properly. This is the reason I will not buy any more inkjet printers. only Toner based machines. cheers.

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Have you performed a print head cleaning? If not, follow the instructions below:

1) Press <Menu> on the panel repeatedly until [Maintenance] appears on the display

2) Press left or right arrow buttons until the cleaning setting you want appears, either [Head Cleaning] or [Head Refreshing]

3) Press the <OK> button.

Note: Head cleaning should be attempted first, and may need to be done more than once. Examine the results of the test page.

Head refreshing is more aggressive, uses more ink and should only be performed when necessary (ie. when multiple head cleanings failed to solve your print problem).

Dec 20, 2009 | Canon PIXMA MP780 All-In-One InkJet...

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Printer will only print in colour ink, not anything in black text


The issue your having is more then likely the ink cartridge itself or the printhead. Here is the steps in checking and possibly fixing the issue. Step 7 though should be done by a repair tech.

(1) Check that the orange cap or tap is not on the printhead.
(2) Remove the printhead and re-install it.
(3) Perform printhead cleaning, and visually check the test print for non-discharge of ink from nozzle.
(4) Perform head-refreshing, and visually check the test print for non-discharge of ink from nozzle.
(5) Replace the appropriate ink tank.
(6) Replace the printhead
(7) Replace the purge unit.

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The colour cartridge is badly clog. put tissue with warm/hot water below the head, wait for about 30 minutes. If tissue is coloured, the dried ink inside head is out. Is it not, do suction from the outlet pipe of head cleaning mechanics.

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Reseat the cartridges.
Do 3 consecutive head cleanings.

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You are a ******* and I WILL NEVER BUY A PIECE OF **** EPSON AGAIN...THESE PRINTERS ****

Jan 22, 2009 | Epson Stylus Multifunction Inkjet Printer/...

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

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1 Answer

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Please try the following to resolved the issue:

Run a series of head cleaning
1. Make sure the printer is turned on but not printing. Make sure there are no error lights or messages appearing in the LCD.
NOTE: You cannot clean the print head if the any of the cartridges are expended. Replace the appropriate ink cartridge before proceeding.
2. Load letter size paper.
3. Click on START, CONTROL PANEL, PRINTER & FAXES then right click on CX3200 printer Icon then select printing preferences
4. Click on the UTILITY or MAINTENANCE tab, then click on HEAD CLEANING.
5. Follow the instructions on the screen to clean the printhead. Cleaning takes about 30 seconds, during which time the printer makes some noise and the power light flashes. Never turn off the printer while the power light is flashing, unless the printer has not moved or made noise for more than 5 minutes.
6. When the power light stops flashing click PRINT NOZZLE CHECK PATTERN and then click NEXT.
7. If the nozzle check pattern has no gaps in its lines, click FINISH. If the pattern has any gaps, click CLEAN to clean the printhead again.
8. If the situation continues after three cleaning cycles and nozzle checks, replace one of the affected ink cartridge(s).
9. Once the cartridge(s) has been replaced, please follow steps one through seven up to three times.
If the nozzle check still has gaps after you have run at least 3 consecutive cleaning cycles and replaced the affected ink cartridge(s) with genuine Epson inks, your printer will require service.

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2 Answers

Not printing


If the machine goes through the motions of printing i.e. it pulls in the paper and the head runs back and forth but put no ink on the page then it would suggest either a fault with the pump cap and/or the pipes from it to the waste pads OR that the heads are clogged.

If you have no flashing warning lamps and the ink loss was gradual over say a page or after the machine has stood for a while, then you should try an under head cleaning routine as in some of my earlier posts. like this one http://www.fixya.com/support/t137335-problem_print_outs_from_printer

If the ink loss was sudden - like after changing the inks, have you checked to see that  you have removed any and all sealing tapes. You do not mention if you are using genuine inl or compatibles. If using compatibles I would try the cleaning cycle first to clear the dried crud from under the head. Ever wonder why Epson do not make cleaning cartridges but almost ALL compatible ink manufacturers do?

Try the cleaning and let me know how you get on

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