Question about Brother MFC 420CN All-In-One InkJet Printer
Forgive me for asking this, but roughly speaking about 80 to 95% of problems involving ink or toner are resolved by the following:
Are you using a factory new ink cartridge supplied by the manufacturer of the printer?
If you are using a refilled or third party cartridge that may well be your problem. Most manufacturers build logic into their products to prevent the use of “Other Equipment Manufactured” cartridges as well as re-filled cartridges.
They do this to prevent problems from contaminated inks causing problems with print quality or damaging the physical printhead.
If you are using the manufacturer’s new ink cartridges, then please contact their technical support group. Factory new cartridges usually have warranties on them.
Posted on Dec 12, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
CANON MP780 BLACK DOES NOT PRINT
This is what works for me. Try at your own risk. I cleaned both areas.
Perform a nozzle check using the Canon software under "maintenance." If the nozzle check prints successfully, the problem is most likely not with the printhead. Otherwise, 1) Lift up the lever above the ink cartridges. Take the ink cartridges out. Put them in a plastic zip lock bag. 2) The container in which the ink cartridges sit is removable. The container is inside the moving mechanism. The container is the printhead. Tilt it slightly and pull up. This should come out easily. 3) There are round pads under which the ink cartridges sit in the printhead you removed. The large one is black. On the underside of the printhead are small slits. The **** separated from the others is black. Fill a syringe with Windex. a. Run warm water over the printhead until no more ink comes out. b. Fill the areas where the round pads are with Windex. c. Set the printhead on some paper towels. The liquid will soak through and come out the underside along with the ink. Repeat steps a-c until no more ink comes out, but at least 10 times. 4) Let the print head sit and dry for two hours. Put everything back in the printer. Unplug the printer. Plug in the printer. Turn the printer off. Turn the printer on. Do a clean cycle.
CLEAN PURGE MECHANISM:
You will need a light. 1) Unplug the printer and move the printhead all the way to the left. On the far right are two rectangular basins. The smaller one is black. Take your fingernail or a tweezers and lift out the sponge pad (do not drop it). Soak the sponge pad in Windex until it turns white. Plug in the printer. 2) Fill a syringe with Windex. a. Fill the basin with liquid. b. Let it soak for 5 minutes. c. Turn the printer off. d. Turn the printer on. Repeat steps a-d until you see a small hole in the basin. e. Put the syringe over the hole and fill the basin, pushing the liquid into the hole. f. Let it soak for 5 minutes. g. Turn the printer off. h. Turn the printer on. Repeat steps e-h 5 to 10 times. 3) Put the sponge pad back in using your fingers (do not drop it). Unplug the printer. Plug in the printer. Turn the printer off. Turn the printer on. Do a clean cycle.
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