Brother BAS-611 Owner's Manual | Page 71

Brother Misc Electronics Owner's Manual - BAS-611.
Download
Page  of 75
4.6, 1422 votes
background image

65

LK3-B434E Mark II

17. TROUBLESHOOTING

17. TROUBLESHOOTING

Problem

Cause

Check

Remedy

Page

Work clamp does not 
rise.

Work clamp does not 
drop.

Work clamp lift 
amount is incorrect.

Work clamp 
operation is sluggish.

Sliding part of the 
work clamp 
lubrication

Grease the sliging 
part of the work 
clamp.

40

Work clamp lift 
amount is too great.

Distance between 
work clamp and top 
of needle plate

Adjust the height of 
the work clamp to 
within 17 mm.

40

Too much friction between 
presser plate and presser 
arm lever support.

Presser plate and 
presser arm lever 
support lubrication

Grease the presser 
plate and presser arm 
lever support.

40

Work clamp is 
contacting thread wiper.

Thread wiper standby 
position

Adjust the position of 
the thread wiper.

42

Presser lifter link is 
not moving back.

Link return spring is 
unhooked.

Hook the link return 
spring properly.

Incorrect position of 
presser arm lever 
plate.

Distance between 
work clamp and top 
of needle plate

Adjust the work 
clamp lift amount.

40

Thread wiper does 
not operate correctly.

The thread wiper is 
obstructing the 
needle.

Clearance beween 
thread wiper and 
needle tip

Adjust the height of 
the thread wiper.

42

Thread wiper 
position is incorrect.

Thread wiper 
position

Adjust the operating 
distance of the thread 
wiper.

42

Lower thread winds 
to one side.

Bobbin winder thread 
tension stud height is 
incorrect.

Bobbin winder thread 
tension stud height

Adjust the height of 
the thread tension 
stud.

27

Lower thread 
winding amount is 
incorrect.

Bobbin presser 
position is incorrect.

Thread winding 
amount

Adjust the position of 
the bobbin presser.

27

Stitches being 
skipped at the sewing 
start.

Refer to “Skipped 
stitches occur”

Refer to “Skipped 
stitches occer”.

Threads comes 
unthreaded.

Uneven upper thread 
length.

Upper thread length

Adjust the sub-
tension.

29

Upper thread is too 
short.

Thread take-up lever 
stroke

Adjust the thread 
take-up lever stroke.

37

Related Manuals for Brother BAS-611