Справочник Пользователя для Brother LK3-B448E

LK3-B448E MARK

II

/BA-16

68

Check

Remedy

Problem

Cause

Page

Presser is contacting 

thread wiper.

Thread wiper standby 

position

Distance between 
button clamp and top 
of needle plate

Button clamp lifter 

amount is too great.

              

48

Adjust the position of 

the thread wiper.

Adjust the height of the 
button clamp to within 
13 mm.

Button clamp does not 

rise.

46

Button clamp does not 

drop.

Link return spring is 

unhooked.

Presser lifter link is not 

moving back.

              

Hook the link return 

spring properly.

Button clamp lift 

amount is incorrect.

Distance between 
button clamp and top 
of needle plate

Incorrect position of 
button clamp holder 
hook assembly

              

Adjust the button 

clamp lift amount.

46

Thread wiper position 

is incorrect.

Thread wiper position

Clearance between 
thread wiper and 
needle tip

The thread wiper is 

obstructing the needle. 

              

48

Adjust the operating 
distance of the thread 
wiper.

Adjust the height of the 

thread wiper.

Thread wiper does not 

operate correctly.

48

Lower thread winds to 

one side.

Bobbin winder thread 

tension stud height

Bobbin winder thread 
tension stud height is 
incorrect.

              

Adjust the height of the 

thread tension stud. 

29

Lower thread winding 

amount is incorrect.

Thread winding 

amount

Bobbin presser 

position is incorrect.

              

Adjust the position of 

the bobbin presser.

29

Uneven upper thread 

length.

Upper thread length 

Refer to "Skipped 

stitches occur".

Stitches being skipped 

at the sewing start.

              

29

Adjust the sub-tension. 

Refer to "Skipped 

stitches occur".

Threads comes 

unthreaded.