Brother DreamWeaver„ VQ3000 Operation Manual page 211

Problem
Skipped stitches Needle is turned, bent or the point is dull.
Using improper needle or thread for the
selected fabric.
Machine is threaded incorrectly.
Dust or lint has collected under the needle
plate.
Needle is installed incorrectly.
Needle is defective.
Thin or stretch fabrics are being sewn.
Needle breaks Needle is installed incorrectly.
Needle clamp screw is not tightened.
Needle is turned or bent.
Using improper needle or thread for the
selected fabric.
Wrong presser foot was used.
Upper thread tension is too strong.
Fabric is pulled during sewing.
Spool cap is set incorrectly.
There are scratches around the holes in the
needle plate.
There are scratches around the hole(s) in the
presser foot.
There are scratches on the bobbin case.
Needle is defective.
Upper threading is incorrect.
Bobbin is set incorrectly.
Presser foot is attached incorrectly.
Screw of the presser foot holder is loose.
Fabric is too thick.
Fabric is fed forcefully when sewing thick fabric
or thick seams.
Stitch length is too short.
Bobbin thread is incorrectly wound.
Fabric does not feed Feed dogs are set in the down position.
through the machine
Stitches are too close together.
Wrong presser foot was used.
Needle is turned, bent or the point is dull.
Thread is entangled.
Fabric puckers There is a mistake in the upper or bobbin
threading.
Thread tension is set incorrectly.
Stitches are too long when sewing thin fabrics. Shorten the stitch length.
Needle is turned, bent or the point is dull.
Spool cap is set incorrectly.
Wrong presser foot.
Cause
Replace the needle.
Check the "Fabric/Thread/Needle
Combination" chart.
Check the steps for threading the machine
and rethread it correctly.
Remove the dust or lint with the brush.
Reinstall the needle correctly.
Replace the needle.
Sew with one sheet of thin paper under the
fabric.
Reinstall the needle correctly.
Tighten the needle clamp screw.
Replace the needle.
Check the needle and fabric combination.
Use the recommended presser foot.
Adjust the thread tension setting.
Do not pull the fabric during sewing.
Check the method for attaching the spool
cap, then reattach the spool cap.
Replace the needle plate, or consult your
authorized dealer.
Replace the presser foot, or consult your
authorized dealer.
Replace the bobbin case, or consult your
authorized dealer.
Replace the needle.
Check the steps for threading the machine
and rethread the machine.
Reset the bobbin thread correctly.
Attach the presser foot correctly.
Securely tighten the screw of the presser
foot.
Use fabric that the needle can pierce when
the handwheel is turned.
Allow the fabric to be fed without being
forcefully pushed.
Adjust the stitch length.
Use a correctly wound bobbin.
Press
raise the feed dogs.
Lengthen the stitch length setting.
Use the correct presser foot.
Replace the needle.
Cut the entangled thread and remove it from
the race.
Check the steps for threading the machine
and rethread it correctly.
Adjust the thread tension.
Replace the needle.
Check the method for attaching the spool
cap, then reattach the spool cap.
Use the correct presser foot.
TROUBLESHOOTING
Solution
, and then turn the handwheel to
Appendix A-27
Page
B-51
A
B-52
2
B-42
A-15
B-51
B-51
S-9
B-51
B-51
B-51
B-52
S-67
S-12
—
B-42
A-15
B-49
A-15
B-51
B-42
B-39
B-49
B-49
S-7
S-10
B-34
S-40
S-10
S-67
B-51
A-23
B-39, B-42
S-12
S-10
B-51
B-42
S-67