27
LCD displays “SC 10”.
Machine runs slow, then fast, and the
needle bar stops at its highest position.
LCD displays “SC 08”.
The foot control symbol appears when the
foot control is attached.
Buzzer sounds when the foot control is
deeply depressed.
Buzzer sounds when the foot control is
released.
LCD displays “SC 09”.
Buzzer sounds at right or left position.
12)
(NOT
APPLICABLE
FOR THIS
MODEL)
DEFECTIVE CONDITION
THE FOOT CONTROL
SELF-DIAGNOSTIC TEST
STEP AND
ITEMS
TO CHECK
08)
FOOT
CONTROL
09)
SLIDE
VOLUME
11)
(NOT
APPLICABLE
FOR THIS
MODEL)
PROCEDURE
CORRECT CONDITION
Attach the foot control to the sewing
machine.
Depress the foot control as far as it
goes, then release it.
If the result is correct condition, press
the start/stop button to proceed the next
step.
If the result is defective condition, press
the reverse stitch button to proceed the
next step.
Shift the slide volume from left to right,
then return to the left.
If the result is correct condition, press
the start/stop button to proceed the next
step.
If the result is defective condition, press
the reverse stitch button to proceed the
next step.
Press the needle up/down button.
If the result is correct condition, press
the start/stop button to proceed the next
step.
If the result is defective condition, press
the reverse stitch button to proceed the
next step.
10)
DC MOTOR
The foot control.
Symbol does not appear.
Buzzer does not sound.
–REMEDY–
Replace the foot control.
Replace the machine socket.
Replace the circuit board A.
The machine motor does not
start.
The motor stops immediately.
The motor runs unstable.
–REMEDY–
Replace the DC motor.
Replace the circuit board A.
Buzzer does not sound.
–REMEDY–
Replace the circuit board A.