7. MAINTENANCE ........................................................................................ 37
7-1. Adjusting the knife ........................................................................................................................... 37
7-5. Changing needles ............................................................................................................................ 39
7-8. Dust collector box ............................................................................................................................ 41
7-9. Cleaning the sensor ......................................................................................................................... 41
7-11. Replacing the fuse ......................................................................................................................... 43
7-14. Error codes ..................................................................................................................................... 46
7-15. Error code list ................................................................................................................................. 47