7200
10. STEP 10 (DRIVING AND BOBBIN WINDING MOTORS)
Step10
Sewing Motor
Spool Motor
[CORRECT CONDITION]
WHEN THE PRESSER BAR IS
LOWERED AND THE FOOT
CONTROL IS DEPRESSED, THE
DRIVING MOTOR RUNS.
WHEN THE BOBBIN WINDING
BUTTON
IS PRESSED, THE
BOBBIN WINDING MOTOR RUNS.
28
[FAULTY CONDITION ]
THE DISPLAY SHOWS "error".
–REMEDY–
CHECK THE MOTOR BELT
TENSION. REPLACE THE DRIVING
MOTOR, BOBBIN WINDING
MOTOR OR CIRCUIT BOARD A.