In most cases, this problem is caused by at least one ink cartridge.
Take a handkerchief and the tri-color cartridge. Now press the cartridge like a stamp on the handkerchief for about 2-3 seconds. You should see a strong, colored strip, consisting of magenta, blue and yellow. Is this the case? If there is no or very little ink on the handkerchief, moisten the handkerchief slightly and press the cartridge again, this time for about 30 seconds on it, until more ink comes out. Afterwards, re-insert the cartridge and run a cartridge clean, if necessary.
What is the result?
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