While you wait for answers, we may have found some information which could help you.
Click here for Machine Lights Flashing
Toyota 2400?
Toyota RS2000 Bobbin Winder Unit Replacement?
Toyota SL3404D Overlocker leaving big loops?
Shuttle problem Toyota rs2000-2d?
How can I fix my Toyota 4500 sewing machine?
How can I fix my Toyota RS2000 sewing machine?