How to clean the print head?

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Turn off the printer by pressing the pushbutton for a few seconds. The green light on the push button goes out.
Open the printer cover.
Use a new Evolis swab and press the middle of the pipe until it clicks, in order to release the cleaning product.
Gently rub the swab from left to right on the print head for a few seconds.
Close the printer cover. Wait two minutes for the cleaner to evaporate completely before using the printer again.
Switch on the printer by pressing the pushbutton for one second. The green light on the push button comes on.