Appendix
163
Fault Cause Solution
Upper thread breaks
Incorrect needle/thread
combination.
> Match the needle with the thread size.
Upper thread is too tight. > Reduce the upper thread tension.
Incorrectly threaded. > Rethread.
Poor quality thread. > Use quality thread.
The stitch plate or the hook tip is
damaged.
> Contact the nearest specialized BERNINA dealer to have
the damages repaired.
> Replace the stitch plate.
The thread is caught in the area
of the thread take-up lever.
> Slide the headframe (1) to the left, then remove it.
> Remove the thread remnants.
> Insert the 4 knobs of the headframe into the provided
notches and slide the headframe to the right.
Lower thread breaks
The bobbin case is damaged. > Replace the bobbin case.
The stitch hole in the stitch plate
is damaged.
> Contact the nearest specialized BERNINA dealer to have
the damages repaired.
> Replace the stitch plate.
Needle blunt or bent. > Replace the needle.
Needle breaks
The needle is incorrectly inserted. > Insert the needle with the flat side to the back as far up
as it will go into the needle holder and tighten the
screw.
The fabric has been pulled. > Feed the fabric evenly.
Thick fabric has been pushed. > Use the appropriate presser foot, e.g. Jeans foot No. 8
for thick material.
> Use the height compensating tool when sewing over a
thick seam.
Knotted thread. > Use quality thread.
Stitch width not adjustable
The selected needle and stitch
plate cannot be used in
combination.
> Replace the needle.
> Replace the stitch plate.
Speed too low
Unfavorable room temperature. > Place the machine in a warm room one hour before use.
Settings in the Setup Program. > Adjust the sewing speed in the Setup Program.
> Adjust the slide.
To Next Page
Loading...
