Here are some suggested steps you can take to troubleshoot the printer not recognizing the new maintenance kit:

1. Verify that the printer is compatible with the new kit.
2. Ensure that the correct part number is being used.
3. Check for any firmware updates which are required for compatibility.
4. Double-check configuration settings and power cycles.
5. Reset printer settings by reinstalling drivers and software.
6. Ensure that the printer is connected to the network correctly.