PE-780D
FAQs & Troubleshooting |
Bobbin case |
To adjust the bobbin tension for embroidery function, using the bobbin case, turn the slotted-head (-) screw with a (small) screwdriver.
Refer to "Cleaning the case" for information on how to remove/install a bobbin case.
(1).Screwdriver(Small) |
(2).Bobbin wound |
(3).Embroidery pattern |
(4).Fabric and |
surface of fabric |
underside of fabric |
Be sure to check if a bobbin is installed correctly before you embroider the pattern. If you can only see the bobbin thread on both sides of fabric as shown in the left picture, the bobbin is not installed correctly. For details, refer to "Correctly installing a bobbin |
When you adjust a bobbin case, turn a slotted-head(-) screw by a screwdriver(small).
DO NOT adjust the position of the Phillips (+) screw Adjust with a screwdriver(small). |
<Correct tension> * Upper thread slightly appears on the underside of fabric. | ||
surface of fabric | underside of fabric |
<Bobbin thread is loose> * Bobbin thread appears slightly on the surface of fabric. | ||
surface of fabric |
underside of fabric |
If this occurs, turn the slotted-head screw (-) clockwise, being careful not to over-tighten the screw, approximately 30-45 degrees to increase bobbin tension.
<Bobbin thread is tight> * Upper thread on the surface of fabric seems to be lifting/looping and bobbin thread is not seen on the underside of fabric. | ||
surface of fabric |
underside of fabric |
If this occurs, turn the slotted-head screw (-) counterclockwise, being careful not to over-tighten the screw, approximately 30-45 degrees to decrease bobbin tension.
After adjusting a bobbin case, make trial sewing to check thread tension.
If the thread tension is still incorrect, repeat the Procedure 5 until you can obtain a correct thread tension.