Table of Contents
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Service Manual
INDEX
1. Disassembling of covers
2. Test mode
3. Adjustment of feed dog height
4. Needle bar height
5. Needle threader height
6. Presser foot height and direction
7. Needle position at zigzag stitching
8. Clearance between needle and shuttle
9. Needle timing to feed dog
10. Needle timing to shuttle hook
11. Adjustment of take-up lever timing to needle
12. Adjustment of meshing position of gears for thread take-up
lever
13. Adjustment of thread tension
14. Tension of timing belt
15. Motor belt tension
16. Retaining bracket for bobbin case
17. Origin point positioning of zigzag bight
18. Stitch length
19. Needle stop at highest position
20. Electronic component area
*AC Power board
*CPU board-1
*Switch board-1
21. Wiring diagram
Original issue
Oct.2012
Page 2/41
Model
One Plus
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Table of Contents
