Bernina 500 - Page 99

Appendix
99
Fault Cause Repair
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.
1
> 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.
Knotted thread. > Use quality thread.
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.
The machine doesn't start
Unfavorable room temperature. > Place the machine in a warm room one hour before use.
> Connect the machine and switch it on.
The machine is damaged. > Contact the specialized BERNINA dealer.
Neither the sewing light nor
the light on the free arm
lights up
Settings in the Setup Program. > Activate it in the Setup Program.
The sewing light is defect. > Contact the specialized BERNINA dealer.