Brother PE 400D - Manual (Page 103)

100
BEFORE TAKING YOUR MACHINE IN FOR SERVICE
TROUBLESHOOTING
Basic sewing machine maintenance
Before calling for service, check the following items. If the problem still persists, contact the place of purchase
or your nearest Brother dealer.
• Trouble with threads and stitches
If you have gone through the troubleshooting tips and are still unable to find the source of the problem,
please take your machine back to the place of purchase or your nearest Brother dealer for repairs.
Upper thread breaks
Upper threading is
not correct.
Re-thread upper thread.
Bobbin thread breaks
Upper thread is
entangled.
Remove thread ends in
the race or inner shuttle.
Skipped stitches
Needle is not correctly
inserted.
.
Insert needle properly.
Fabric puckers
Threading is not correct
Re-thread upper and
bobbin thread correctly.
P.20~22 P.97~98 P.34 P.16~22 NO NO NO NO
Upper thread is entangled.
Remove thread ends in
the race or shuttle.
Bobbin is not threaded
properly in the shuttle.
Set bobbin properly and
pull out the bobbin thread.
Correct needle is not
used..
Change to proper
needle.
Correct needle is not
used
Change to proper needle
P.97~98 P.19 P.34 P.34 NO NO NO NO
Spool of thread is not
correctly set.
Set spool of thread
correctly.
The combination of fabric,
thread and needle is not
correct..
Check the “RELATED CHART
OF SEWING FABRICS,
THREAD AND NEEDLE” .
Combination of fabric,
thread and needle is not
correct.
Check “RELATED CHART
OF SEWING FABRICS,
THREAD AND NEEDLE”
P.20 P.35 P.35 NO NO NO
Correct needle is not
used.
Change to proper needle.
Dust is clinging under
the needle plate.
Remove dust by cleaning
with a brush.
Thread tension is
too tight.
Refer to “THREAD
TENSION”
P.34 P.97~98 P.30 NO NO NO
Thread tension is too
tight.
Refer to “ THREAD
TENSION”
P.30 NO
Upper threading is not
correct.
Re-thread upper thread.
P.20~22 NO