How do I clean the printer to improve print or copy quality?

To improve print quality, you can print a cleaning page by accessing the clean product option from the printer menu. For copy and scan quality issues, check the scanner glass for dirt and smudges and clean it as needed, and also clean the pickup rollers and separation pad in the document feeder to eliminate lines or streaks. Additionally, checking the scanner glass for dirt and smudges is also recommended for improving fax image quality. (Pages 139, 144, 149)