Use and Care Manual

76
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 thread is not set under the presser foot when start sewing.
6. The thread is tangled around the spool.
Page 17
Pa g e 11
Page 13
Page 13
Page 24
Use the spool holder.
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.
Page 16
Page 73
Change the bobbin.
The needle breaks 1. The needle is incorrectly inserted.
2. The needle clamp screw is loose.
3. The needle is too fine for the fabric being used.
4. An inappropriate presser foot is used.
Page 13
Page 13
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. The foot pressure is not adjusted properly.
6. A stabilizer is not used when sewing very fine fabrics.
Pa g e 11
Page 17
Page 13
Make stitch shorter.
Page 10
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 73
Make stitch longer.
Page 10
Loops on the seams 1. The needle thread tension is too loose.
2. The needle is too thick or too fine for the fabric.
Pa g e 11
Page 13
The machine does
not work
1. The machine is not plugged in or foot control is not connected.
2. Thread has been caught in the hook race.
3. The presser foot is not lowered.
Page 6
Page 73
Page 10
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 43
Apply an interfacing.
Page 41
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 73
Page 73
Layers shift 1. The foot pressure is not suitable for fabrics being sewn. Page 10
Auto thread cutting
failed
1. Thread is too thick for the auto thread cutting.
2. Threads have been caught in the thread cutter mechanism.
Page 7
Page 73
The stitch pattern
cannot be selected.
1. The stitch pattern is 57 or 59 in mode 2 (Bridge stitches). Page 65
It is not abnormal for a faint humming sound to be heard from the internal motors.
The LCD screen and function key area may become warm after several hours of continuous use.