typical GC6760 SERIES, Руководство по установке, инструкции и обслуживанию

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TYPICAL GC6760 Series
11 // ERROR MESSAGES & POSSIBLE TROUBLESHOOTING
11/4 Missing stitches when you start sewing
Missing stitches when you start sewing can have
various reasons.
1. Check if the tension on the take up spring is to tight.
2. Check if the take up spring is in the right position.
3. Check if the upper thread end is long enough after cutting.
Adjust the pre tensioner if necessary.
4. Check that the thread is cut off cleanly. Sharpen the
stationary knife or replace the stationary knife and the
moving knife.
5. Check if the thread end from the bobbin is long enough
after cutting. When the bobbin is spinning in the bobbin
case replace brake spring.
6. Check if the needle is to heavy for your material.
Replace with a thinner needle if necessary.
7. Check the sewing speed when you start sewing. Use the
soft-start-function if necessary.
11/5 Skipped stitches while sewing
Skipped stitches while sewing can have various reasons.
1. Check if the point of the needle is bend or blunt. Replace
if necessary.
2. Check if the needle is inserted the right way.
3. Check if the machine is threaded properly.
4. Check if the needle is to thin for the material.
5. Check the foot pressure. It is maybe to soft or to hard.
6. Check the tension on the take up spring.