Troubleshooting - Janome Sewing Machine Instruction Book

Troubleshooting

Cause
Condition
1. The needle thread is not threaded properly.
The needle thread
2. The needle thread tension is too tight.
breaks.
3. The needle is bent or blunt.
4. The needle is incorrectly inserted.
5. The needle thread and the bobbin thread are not set under the
6. The threads were not drawn to the rear after sewing.
7. The thread is too heavy or too fine for the needle.
The bobbin thread
1. The bobbin thread is not threaded properly in the bobbin holder.
breaks.
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and does not turn smoothly.
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. A wrong presser foot is used.
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. The blue tipped needle is not being used for sewing stretch, very
4. The needle thread is not threaded properly.
5. The poor quality needle is used.
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. The foot pressure is not adjusted properly.
The cloth is not
1. The feed dog is packed with lint.
feeding smoothly.
2. The stitches are too fine.
3. The feed dog is not raised after "drop feed" sewing.
Loops on the
1. The needle thread tension is too loose.
seams
2. The needle is too thick or too fine for the fabric.
The machine does
1. The machine is not plugged in or foot control is not connected.
not work.
2. Thread has been caught in the hook race.
3. The presser foot is not lowered.
Buttonhole sewing
1. The stitch density is not suitable for the fabric being sewn.
is not sewn
2. The interfacing has not been used for the stretch or synthetic fabric.
properly.
3. The buttonhole lever is not lowered
The machine is
1. Thread has been caught in the hook race.
noisy.
2. Lint has built up in the hook race or bobbin holder.
Layers shift.
1. The foot pressure is not suitable for fabrics being sewn.
Thread cutter LED
1. The presser foot is raised before auto thread cutting is complete.
blinks.
2. Threads have been caught in the tread cutter mechanism.
It is not abnormal that a faint humming sound is coming out from the internal motors.
The pattern selection key area may get warm when the machine has been used for hours.
presser foot when start sewing.
fine fabrics and synthetics.
A stabilizer is not used when sewing very fine fabrics.
65
Reference
Pages 14, 15
Page 19
Page 18
Page 18
Page 21
Page 21
Page 18
Page 13
Page 61
Change the bobbin.
Page 18
Page 18
Page 21
Page 18
Use the correct foot.
Page 18
Page 18
Page 18
Pages 14, 15
Change the needle.
Page 19
Pages 14, 15
Page 18
Make stitch shorter.
Page 20
Apply a stabilizer.
Page 61
Make stitch longer.
Page 20
Page 19
Page 18
Page 4
Page 61
Page 7
Page 38
Apply an interfacing.
Page 35
Page 61
Page 61
Page 20
Lower the presser
foot.
Page 61