Remove the springs that maintain the print head.

Remove the print head by pulling on the ribbons. These are delicate and easily damaged if attempting to clean with alcohol.

In case you want to replace the print head, the spare part reference is: CN688A

When inserting the print head after cleaning or replacing, make sure the horizontal plastic ribbon is between the plastic guides, as shown in the last picture. Getting this wrong may cause the print head to jam when you put the power back on at the end.