Janome JW8100, Инструкция

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53
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 and bobbin threads are not set under the presser foot
when start sewing.
6. The thread is either too heavy or too fine for the needle.
Page 17
Page 10-11
Page 13
Page 13
Page 20
Page 13
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 16
Page 51
Change the bobbin.
Page 15
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 13
Page 13
Page 20
Page 13
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 13
Page 13
Use the stretch stitch
needle.
Page 17
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.
Page 10-11
Page 17
Page 13
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 51
Make stitch longer.
Page 12
Loops on the seams 1. The needle thread tension is too loose.
2. The needle is too thick or too fine for the fabric.
Page 10-11
Page 13
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 5
Page 51
Page 15
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 31
Apply an interfacing.
Page 30
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 51
Page 51