Janome MB-4 User Manual download pdf (Page 84)

81

Problem

The machine does not run.

The machine is noisy.

The needle thread breaks.

The bobbin thread breaks.

The needle breaks.

Skipped stitches

Embroidery pattern is

distorted or not aligned.

The tread forms loops.

Cause

1. The machine is not plugged in correctly.

2. The threads are jammed in the hook or

around the take-up lever.

3. A confirmation message or an error message

is displayed.

4. The control system does not work correctly.

1. Lint has accumulated in the hook.

2. The machine runs out of oil.

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 not inserted properly.

5. Stitch density is too dense.

6. Poor quality threads are used.

7. The bobbin thread is not threaded properly.

1. The bobbin thread is not threaded properly.

2. Lint has accumulated in the hook.

3. The bobbin is not inserted into the bobbin

case properly.

4. The bobbin or bobbin case has a scratch or

nick.

1. The needle is not inserted properly.

2. The needle is bent or blunt.

3. The needle clamp screw is loose.

4. The needle thread tension is too tight.

5. Stitch density is too dense.

7. The needle thread is not threaded properly.

1. The needle is not inserted properly.

2. The needle is bent or blunt.

3. The needle thread is not threaded properly.

4. The fabric is not stretched tight enough in the

hoop.

1. The needle thread tension is too tight.

2. The fabric is not stretched tight enough in the

hoop.

3. A stabilizer is not used.

4. The fabric is caught or trapped while stitching.

5. The threads are tangled on the bottom side of

the fabric.

6. Short stitches are eliminated with the “Ignore

short stitches” setting.

1. The needle thread tension is too loose.

2. The bobbin is not inserted properly.

3. A poor quality thread is used.

Reference

See page 13.

Remove jamming threads.

Follow the message to turn

it off.

Turn the power off and turn

it on again.

See page 76.

See page 78.

See page 19.

See page 30.

See page 31.

See page 31.

Modify the pattern by using

an embroidery software.

Use a high quality threads.

See page 17.

See page 17.

See page 76.

See page 17.

Replace the bobbin or

bobbin case.

See page 31.

See page 31.

See page 31.

See page 30.

Modify the pattern by using

an embroidery software.

See page 19.

See page 31.

See page 31.

See page 19.

See page 22.

See page 30.

See page 22.

See page 15.

See page 27.

Cut off and remove the

tangled threads.

See pages 59, 67.

See page 30.

See page 17.

Use a high quality thread.

Troubleshooting

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