When performing maintenance on an impact printer after experiencing poor quality prints, an error-free self-test printout, and hearing unusual noises during operation, which of the following is the BEST action to take?
Replace the ink ribbon, as it is the component that transfers ink onto paper.
Replace the printer paper, since defective paper could affect print quality.
Refill the ink ribbon, believing the ink has possibly dried up.
Replace the print head, since it is responsible for the physical impact required to make prints.