What is the difference between printer maintenance and troubleshooting?

Printer maintenance entails replacing cartridges, cleaning printheads, cleaning the printer itself, and refilling paper. Printer troubleshooting can include any of the printer maintenance items used in an effort to resolve a problem, it can also include attempting to resolve issues with paper jams, power issues, and print quality issues. Resolving issues with the printer software would also fall under the category of troubleshooting.