22
Correct Condition
Beeping sound when the button pressed.
LED display "8.8". And it blinks in one
second intervals.
7-segment LED displays "Ld" and 3 mode
LEDs blink in one second intervals.
LED
LEDdisplay
Buttonnumberisdisplayedwhenthe
buttonispressed.
LED displays "11".
(L
eft)
(Right
)
LED displays "
L"or"H".
When the buttonhole lever
is pulle, LED displays "H".
When the buttonhole lever
is free (positioned in the
center), LED displays "L".
When the buttonhole lever
is pushed, LED displays
"H".
Step and
items to check
01)
7-
segmentLED
02)
Mode LED
03)
Button
04)
Bobbin winder
switch
05)
Presser foot
lifter switch
(Not
applicable to
this model)
06)
Buttonhole
Sensor
Procedure
Turn on the power switch while simulta-
neously pressing the needle up/down
button and start/stop button. Press the
start/stop button five times to select
menu item "6" . Press needle up/down
button: The LED indicate "01" for one
second. If you do not press the needle
up/down button within 2.5 seconds, the
machine automatically revert to the nor-
mal sewing mode.
Press needle uo/down button, LED
displays "02" for one second.
Press needle up/down button, LED
displays "03" for one second. Press
buttons S1 - S8.
S1S2S3S4S5S6S7S8
Press needle up/down button, LED
display "04" for one second.
Move the bobbin winder spindle to the
right.
Return it to the left.
Press needle up/down button, LED
displays "06" for one second.
Lower
the buttonhole lever.
Movethebuttonhole
lever back and
forth.
Defective condition
No beep sound
Does not enter self-
diagnostic mode.
LED does not blink on or
off.
1. Replace A-board.
LED does not blink on or
off.
1. Replace A-board.
LED display is different from
that shown to the left.
1. Replace A-board.
LED display is different
from that shown to the left.
1. Adjust bobbin winder
switch position.
2.Replace the bobbin winder
switch.
3.
Replace A-board.
LED display is different
from that shown to the left.
1. Adjust buttonhole sensor
position.
2. Replace buttonhole
sensor.
3. Replace A-board.
LED
S1
S2
