Janome 4300QDC Service Manual page 24

stEP and
itEms to
ChECk
Turn the handwheel toward you to
12)
raise the needle bar at its highest
thrEad
position. Press the needle up/down
CuttEr
button.
motor,
thrEad
If the result is correct condition,
CuttEr
press the start/stop button to
solEnoid
proceed the next step.
If the result is defective condition,
press the reverse stitch button to
proceed the next step.
sElF-diagnostiC tEst
ProCEdurE
LCD displays "12".
The thread cutter symbol will blink, and
thread cutter motor will be initialized.
CorrECt Condition
22
dEFECtivE Condition
Thread cutter motor does
not work.
The thread cutter symbol
does not appear when
thread cutter is at its
Thread initialized position.
cutter Thread cutter position is
symbol not initialized and caution
Buzzer sounds.
–rEmEdy–
Replace the thread cutter
motor.
Replace the thread cutter
initialize switch.
Replace the printed
circuit board A.