INDEX
What to do when .............................................................................................................................. 1 - 3
Face Cover ............................................................................................................................................. 4
Free-arm Cover ...................................................................................................................................... 5
Front Cover ....................................................................................................................................... 6 - 7
RearF Cover ........................................................................................................................................... 8
Presser Bar Height ................................................................................................................................. 9
Needle Drop Position ........................................................................................................................... 10
Adjustment of Hook Timing .................................................................................................................. 11
Feed Dog Height .................................................................................................................................. 14
Top Tension .......................................................................................................................................... 16
Circuit Board-A connection .................................................................................................................. 17
Self-diagnostic Test ......................................................................................................................... 18-22
Circuit Board-A ................................................................................................................................ 23-24
Driving Motor ........................................................................................................................................ 25
Switching regulator Unit ....................................................................................................................... 26
Parts List ........................................................................................................................................ 29-43