Final answer:
Preventive maintenance for a printer includes regularly cleaning the paper tray to prevent paper jams and print quality issues, addressing error messages promptly, and avoiding physical damage by not using the printer as a shelf.
Step-by-step explanation:
Recommended preventive maintenance for a printer often includes cleaning the paper tray. This is because dust and debris can accumulate in the tray, potentially causing paper jams or print quality issues. Regular cleaning helps to ensure the printer functions smoothly and extends its lifespan. It's also important to address any error messages immediately to prevent further damage and to avoid using the printer as a shelf, as putting weight on it can cause physical damage. Running heavy graphics software does not constitute maintenance for a printer; instead, it could potentially overwork the printer if done excessively.