To troubleshoot why your printer is not scanning or copying, try the following steps:

1. Make sure the printer is turned on.
2. Check that the paper tray is properly filled with paper.
3. Confirm that the printer is connected to power and the computer.
4. Install ink and toner cartridges as needed.
5. Check the control panel for messages to help troubleshoot.
6. Clean the printer with a lint-free cloth.