Diagnostic Test 07 / STM (Zig Zag Step Motor and Feed
Motor)
81
1, Raise the needle bar to its highest
position. The stitch width symbol will be
displayed. Press the needle up/down
button. The zigzag motor will be
initialized and get its default position.
Buzzer sounds and motor initializes.
Fault note:
The zigzag motor does not
get its default position, buzzer does not
sound. LCD Displays “E1”. Adjust the
lower shaft shield position or see
Diagnostics Appendix, 07.
2. Lower the needle bar to its lowest
position. The stitch length symbol will be
displayed. Press the needle up/down
button, the feed motor will be initialized
and get its default position. Buzzer
sounds and motor initializes.
Fault note:
Feed motor does not get its
default position. Buzzer does not sound.
LCD displays “E2”. Adjust the lower
shaft shield position or see Diagnostics
Appendix, 07.