1. Check the connection of the external device. Make sure that it is connected properly to the computer and also to the printer.

Connection Tips:

• Make sure the cables are firmly plugged in tightly.
• Check for any damage in the cables.
• Use a different USB port or other connecting port.

2. Make sure that the correct printer is being selected.
3. Update the printer drivers to the latest versions.
4. Test the printer in a different device or computer.
5. Clean the printhead on the printer.