Brother XL-6562 Mechanical Sewing Machine "xr 9000" Questions

...rx9000 when i turn on beeps f4 rx9000 when i turn on beeps f8 I could not find a model rx 9000, nor a f4 error message. Brother model XR 9000; page 74; error message B4 - disengage bobbin

how can I reset F1 error code on brother XR-9000 contact brother customer service about the code

...XR-9000 starts with the code F1, F2 or F3 random. How can I reset this to get to a sewing mode? Machine now is cleaned and by cranking the wheel sews great! The F codes are all "machine malfunction ...

...XR-9000 starts with the code F1. How can I reset this to get to a sewing mode? here are 2 manual for the machine, click on the links ...