Table of Contents
Advertisement
Janome MC9900 Instruction Manual
Troubleshooting
Problem
The machine is noisy.
The needle thread breaks.
The bobbin thread breaks.
The needle breaks.
Visual Touch Screen is
not clear.
Skipped stitches
Seam puckering
www.aaasewing.com
Cause
1. Thread is jammed in the hook area.
2. The feed dog is packed with lint.
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 inserted incorrectly.
5. The thread is too heavy for the needle.
6. The needle thread was not set in the thread holder when
embroidery sewing started.
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.
1. The needle is inserted incorrectly.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. The needle thread tension is too tight.
5. The needle is too ne for the fabr ic being sewn.
1. The contrast of the screen is not adjusted properly.
1. The needle is inserted incorrectly.
2. The needle is bent or blunt.
3. The needle and/or threads are not suitable for the fabric being
sewn.
4. A blue tip needle is not being used for sewing stretch, very ne
and synthetics.
5. The needle thread is not threaded properly.
6. The needle is defective (rusted, burr on needle eye or tip).
7. The embroidery hoop is not set properly.
8. The fabric is not stretched tightly enough on the embroidery
hoop.
9. A purple tip needle is not being used for sewing thick fabrics,
denims and across the hem.
1. The needle tension is too tight.
2. The needle thread or the bobbin thread is not threaded
correctly.
3. The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric.
5. The stitch width is too wide.
6. The fabric is not stretched tightly enough on the embroidery
hoop.
123
Janome Embroidery Machine
Reference
See page 121.
See page 121.
See page 13.
See page 34.
See page 16.
See page 16.
See page 16.
See page 92.
See page 12.
See page 121.
Replace the bobbin.
See page 16.
See page 16.
See page 16.
See page 34.
See page 16.
See page 76.
See page 16.
See page 16.
See page 16.
See page 16.
See page 13.
Change the needle.
See page 92.
See page 91.
See page 16.
See page 34.
See pages 12-13.
See page 16.
Make stitches
shorter.
Reduce the stitch
width.
See page 91.
MC9900 Owners Manual/ User Guide
Advertisement
Table of Contents
