Janome J30 Service Manual And Parts List page 22

STEP AND
PROCEDURE
ITEMS TO
CHECK
Not applicable for this machine.
05)
PRESSER
Press the start/stop button to
FOOT
proceed the next step.
LIFTER
SWITCH
06) Turn the handwheel toward you.
UPPER SHAFT
Lower the needle bar from its
POSITIONING
highest to lowest position.
SENSOR
Raise the needle bar from its
lowest position to highest
position.
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.
07)
Turn the handwheel toward you.
ZIGZAG MOTOR
Lower the needle bar its highest
(STEP MOTOR)
to position (zigzag phase).
AND
Press the needle up/down button.
FEED MOTOR
Raise the needle bar from its
lowest position to its highest
position (feed phase).
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.
SELF-DIAGNOSTIC TEST
CORRECT CONDITION
LCD displays "SC 05--" and presser
foot symbol.
LCD displays "SC 06--".
Turn the handwheel.
LCD displays stitch width symbol
when the needle bar is at zigzag
phase.
LCD displays stitch length symbol
when the needle bar is at feed phase.
LCD displays "SC 07--".
Press the needle up/down button
when LCD displays stitch width
symbol.
The Zigzag motor will be initialized
and get its default position.
Press the needle up/down button
when LCD displays stitch length
symbol.
The feed motor will be initialized and
get its default position.
20
DEFECTIVE CONDITION
Presser
foot
symbol
Buzzer does not sound.
Stitch width or length
symbol does not appear.
–REMEDY–
Replace the circuit board P.
Replace the circuit board A.
Stitch
width
symbol
Stitch
length
symbol
Zigzag motor does not get
Stitch
default position.
width
buzzer does not sound.
symbol
–REMEDY–
Replace the zigzag motor.
Replace the circuit board A.
Feed motor does not get
Stitch
default position.
length
buzzer does not sound.
symbol
–REMEDY–
Replace the feed motor.
Replace the circuit board A.