2 Singer Quantum Stylist
TM
9960
INDEX
ESD ..............................................................................................................................................................3
Service tools .................................................................................................................................................4
1. Timing of the upper and lower shaft .........................................................................................................5
2. Needle bar height ....................................................................................................................................6
3. Needle threader height ............................................................................................................................7
4. Presser foot height and parallelism to the needle plate ...........................................................................8
5. Feed-dog height ......................................................................................................................................9
6. Adjustment of needle at center position..................................................................................................10
7. Tension of timing belt ..............................................................................................................................11
8. Needle timing to Hook ............................................................................................................................12
9. The play of the hook gear .......................................................................................................................13
10. The gap between the needle and the hook ..........................................................................................14
11. Bobbin case thread tension .................................................................................................................15
12. Upper thread tension unit ....................................................................................................................16
13. Basic positioning of feeding step motor ...............................................................................................17
14. Stitch Balance.......................................................................................................................................18
15. Position of buttonhole sensor lever ......................................................................................................19
16. Tension of motor and pulley belt ...........................................................................................................20
17. Height of bobbin thread pullout arm .....................................................................................................21
17. Bobbin winder .......................................................................................................................................22
Service Program ........................................................................................................................................23
Service program - Sensor menu.................................................................................................................23
Service Program - Step motor ....................................................................................................................26
Service Program - Message check.............................................................................................................27
Service Program - Without Front cover ......................................................................................................28
Removing the covers ..................................................................................................................................29
Electrical Parts Connection ........................................................................................................................33
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