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1. Number, LED, LED lamp & Buzzer
[Correct condition]
1) Buzzer sounds
2) The number LED and LED
lamp blink at 1 second
interval.
3) Sewing light turns on.
Press the “Clear” button to
proceed to the next step.
2. Function buttons
[Correct condition]
Press all of the buttons on the
front cover. (Press the clear button
at last.)
Each time a button Is pressed,
the code of the button appears
on the LED.
Press “Clear” button to proceed
to the next step.
Codes of buttons on the circuit board F
F1 Auto thread cutter button
F2 Up/Down needle position button
F3 Auto lock button
F4 Reverse button
Codes of buttons on the circuit board K
01 Bobbin winder button
02 Twin needle button
04 Memory button
05 Stitch length button
06 Zigzag width minus button
07 Zigzag width plus button
08 Stitch length minus button
09 Stitch length plus button
10 Stitch selection button 1
11 Stitch selection button 2
12 Stitch selection button 3
13 Stitch selection button 4
* 03 Clear button shows 03 and
proceeds to the next step.
[Faulty condition]
The buzzer does not sound.
It does not go to the next step.
Number LED and LED do not blink.
Replace
Circuit board F
Circuit board K
Circuit board A
[Faulty condition]
It shows [ - - ] , butu does not show
the code of
button.
Replace
Circuit board F
Circuit board K
Circuit board A
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