Baby Lock BLMY Service Manual page 10

4. Adjustment ..........................................................................................4 - 1
Needle curvature ...............................................................................................4 - 2
Tip damage to needle ........................................................................................4 - 3
Starting test mode ..............................................................................................4 - 4
Timing belt tension adjustment ..........................................................................4 - 6
Motor belt tension adjustment ............................................................................4 - 7
Needle bar rise adjustment ................................................................................4 - 8
Needle bar height adjustment ............................................................................4 - 9
Three point needle drop adjustment ................................................................4 - 10
Needle interference left/right adjustment .........................................................4 - 11
Clearance between the needle and the rotary hook point adjustment .............4 - 12
Presser bar height and parallel adjustment .....................................................4 - 13
Fine tension adjustment ...................................................................................4 - 14
Upper thread tension adjustment .....................................................................4 - 15
Inner rotary hook (lower thread) tension adjustment .......................................4 - 16
Feed adjustment ..............................................................................................4 - 17
Bobbin winder (uneven bobbin winding and bobbin winding amounts) adjustment .....4 - 18
BH lever switch position adjustment ................................................................4 - 19
Forward and back adjustment of needle and presser ......................................4 - 20
Knee lifter adjustment ......................................................................................4 - 21
Side feed line adjustment ................................................................................4 - 22
One-point pattern adjustment ..........................................................................4 - 23
Left and right feed dog position adjustment .....................................................4 - 24
Release adjustment .........................................................................................4 - 25
Front/back, left/right position of feed dog adjustment ......................................4 - 26
Feed dog height adjustment ............................................................................4 - 27
Inner rotary hook bracket position adjustment .................................................4 - 28
Adjust the needle thread block ........................................................................4 - 29
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
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