Brother NV4000D Service Manual page 13

Motor belt tension adjustment ............................................................................4 - 4
Upper shaft rotation shutter angle adjustment ...................................................4 - 5
Three point needle drop adjustment ..................................................................4 - 6
Needle clearance left/right adjustment ..............................................................4 - 7
Needle bar rising adjustment .............................................................................4 - 8
Needle bar height adjustment ............................................................................4 - 9
Needle threader adjustment ............................................................................4 - 10
Clearance between needle and rotary hook point adjustment .........................4 - 11
Presser bar height and parallelism adjustment ................................................4 - 12
Needle and presser front/back position adjustment .........................................4 - 13
Fine tension adjustment ...................................................................................4 - 14
Upper thread tension adjustment .....................................................................4 - 15
Shuttle adjustment ...........................................................................................4 - 16
Shuttle origin position adjustment ....................................................................4 - 18
Thread scratch link adjustment ........................................................................4 - 19
Inner rotary hook tension adjustment ..............................................................4 - 20
Cloth pressure setting adjustment ...................................................................4 - 21
Feed dog height and squareness adjustment ..................................................4 - 22
Front/back and left/right position of feed dog adjustment ................................4 - 23
Side feed straight stitch adjustment .................................................................4 - 24
One point adjustment .......................................................................................4 - 25
Feed forward/backward adjustment .................................................................4 - 26
Knee lifter position adjustment .........................................................................4 - 27
BH lever switch position adjustment ................................................................4 - 28
X-belt tension adjustment ................................................................................4 - 29
Y-belt tension adjustment ................................................................................4 - 30
X-carriage height adjustment ...........................................................................4 - 31
Inner rotary hook bracket position adjustment .................................................4 - 32
5. Failure Investigation for Electronic Parts .........................................5 - 1
Error message list ..............................................................................................5 - 2
The power does not come on ............................................................................5 - 3
Pulse motors do not return to starting point .......................................................5 - 5
The touch panel does not work ..........................................................................5 - 7
Main motor does not turn ...................................................................................5 - 8
Main motor rotation abnormal ..........................................................................5 - 10
Cannot sew pattern well ..................................................................................5 - 11
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