Brother MFC 7420 All-In-One Laser Printer "happens leaves turn yellow" Questions

yellow? message. I removed and reinstalled the ?Genuine Brother Cartridge? and nothing happened. I?ve tried it with the power off and the power on, nothing. The machine is useless. None of the buttons

...print. If you cant see any yellow and/or magenta the ph is defective and needs replacing (this happens mostly because of generic ink which contains the wrong chemical mixture to keep the ph

...happens. Could the "exit" on the heads be clogged with a film of old, dry ink? Can they be cleaned with a solvent and opened up again? ...How to get to the heads and what kind of solution/solvent to ...

...turn it back on, try another cleaning and see what happens. if it still does not work, most likely the printhead will need to be cleaned which will cost about $40 - $65 if cartridges are need too. If ...

...happens? Please try this manual resetting of the printer. Remove the USB cable into the printer and leave the printer on. Remove all the cartridges. Close the cartridge door and wait for the INSERT ...

...happens Based on the lights you are already out of one or more ink cartridge or an ink cartridge is not being recognized/expended. -You cannot print if any ink cartridge is expended. -Leave the empty ...

My Aficio 4006 says SC 450 My Aficio 4006 says it has an internal problem and needs to be turned off and on. It gives the code SC 4 5 0. It warms up and self tests OK. The problem occurs when you ask ...

...yellow tape from the new cartridges before you installed them? Were the cartridges changed properly such that an ink charging cycle occurred. Have you carried out any head cleaning cycles? If not, do ...

...turn on printer. I do that and nothing ever happens. That screen just sits there like that for hours until I shut off. First unplug the printer from the computer. Go into the device manager, under ...

...turn on the printer this always happens. The first two times I assumed it was the printhead and replaced it. Then I found that if I remove the printhead and turn off the printer and then turn it back ...