Janome M7200, Instruction Book

Page: 61 / 64

59
Troubleshooting
Condition Cause Reference
The needle thread
breaks 1. The needle thread is not threaded properly.
2. The needle thread tension is too tight.
3. The needle is bent or blunt.
4. The needle is incorrectly inserted.
5. The needle threads is not set under the presser foot when start
sewing.
6. The thread is either too heavy or too fine for the needle.
Page 19
Pages 12-13
Page 15
Page 15
Page 22
Page 15
The bobbin thread
breaks 1. The bobbin thread is not threaded properly in the bobbin holder.
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and does not turn smoothly.
4. The thread is wound loosely on the bobbin.
Page 18
Page 57
Change the bobbin.
Page 17
The needle breaks 1. The needle is incorrectly inserted.
2. The needle clamp screw is loose.
3. The threads were not drawn to the rear after sewing.
4. The needle is too fine for the fabric being used.
5. An inappropriate presser foot is used.
Page 15
Page 15
Page 22
Page 15
Use the correct foot.
Skipped stitches
1. The needle is incorrectly inserted, bent or blunt.
2. The needle and/or threads are not suitable for the work being sewn.
3. A blue tip needle is not being used for sewing stretch, very fine
fabrics and synthetics.
4. The needle thread is not threaded properly.
5. A poor quality needle is used.
Page 15
Page 15
Use the stretch
stitch needle.
Page 19
Change the needle.
Seam puckering
1. The needle thread tension is too tight.
2. The needle thread is not threaded properly.
3. The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric.
5. A stabilizer is not used when sewing very fine fabrics.
Pages 12-13
Page 19
Page 15
Make stitch shorter.
Apply a stabilizer.
The fabric is not
feeding smoothly 1. The feed dog is packed with lint.
2. The stitches are too fine.
3. The feed dog is not raised after “drop feed” sewing.
Page 57
Make stitch longer.
Page 14
Loops on the
seams 1. The needle thread tension is too loose.
2. The needle is too thick or too fine for the fabric.
Pages 12-13
Page 15
The machine does
not work 1. The machine is not plugged in.
2. Thread has been caught in the hook race.
3. The bobbin winder spindle is not returned to the left after bobbin
winding.
Page 6
Page 57
Page 17
Buttonhole sewing
is not sewn
properly 1. The stitch density is not suitable for the fabric being sewn.
2. The interfacing has not been used for the stretch or synthetic fabric.
3. The buttonhole lever is not lowered.
Page 33
Apply an interfacing.
Page 32
The machine is
noisy 1. Thread has been caught in the hook race.
2. Lint has built up in the hook race or bobbin holder.
Page 57
Page 57