Brother NV-10A Service Manual page 9

Adjustment of Bobbin winder (uneven bobbin winding and bobbin winding amounts) ....4 - 18
Adjustment of BW switch position ....................................................................4 - 19
Adjustment of BH lever switch position ............................................................4 - 20
Adjustment of Front/back, left/right position of feed dog ..................................4 - 21
Adjustment of Feed dog height ........................................................................4 - 22
Adjustment of Inner rotary hook bracket position ............................................4 - 23
5. Failure Investigation for Electronic Parts .........................................5 - 1
Error message list ..............................................................................................5 - 2
Power does not come on ...................................................................................5 - 3
Pulse motors do not return to starting point .......................................................5 - 4
Pattern cannot be selected ................................................................................5 - 5
Main motor does not turn ...................................................................................5 - 6
Main motor rotation abnormal ............................................................................5 - 8
Cannot sew pattern well ....................................................................................5 - 9
Cannot sew button holes well ..........................................................................5 - 10
Stitch length and zigzag width cannot be done by manual adjustment ...........5 - 11
Problems with vertical needle movement and reverse stitching ......................5 - 12
Does not operate when the foot controller is used ..........................................5 - 13
LCD display is not normal ................................................................................5 - 14
LCD light does not come on ............................................................................5 - 15
Bobbin winding cannot be done .......................................................................5 - 16
The lamp at hand does not have light ..............................................................5 - 17
Error is displayed .............................................................................................5 - 18
6. Repair Manual .....................................................................................6 - 1
7. Special Instructions of Wiring ...........................................................7 - 1
Wiring of needle bar module ..............................................................................7 - 2
Wiring of feed / rotary module ............................................................................7 - 4
Wiring of power module .....................................................................................7 - 5
Wiring of bobbin winder assy. ..........................................................................7 - 10
Wiring of main PCB assy. ................................................................................7 - 11
Wiring of front cover .........................................................................................7 - 12
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