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Malfunction 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 your BERNINA specialized dealer to eleminate
the damages.
> Change the stitch plate.
The thread is caught in the area
of the thread take-up lever.
1
> Remove the screw (1) at the cover with the Torx Allen
wrench.
> Pull the cover carefully to the front.
> Flip the cover slightly upwards to remove it.
> Remove the thread remnants.
> Attach the cover and tighten the screw.
Lower thread breaks The bobbin case is damaged.
> Replace the bobbin case.
The stitch hole in the stitch plate
is damaged.
> Contact your BERNINA specialized dealer to eleminate
the damage.
> Change the stitch plate.
Needle blunt or bent.
> Change the needle.
Needle breaks The needle is incorrectly inserted.
> Insert the needle with the flat side to the back as far it
will go and tighten the screw.
The fabric has been pulled.
> Feed the fabric evenly.
Thick fabric has been pushed.
> Use the appropriate presser foot, i. e. the Jeans foot No.
8, for thick material.
> Use the height compensation tool for thick seams.
Knotted thread.
> Use quality thread.
Display is inactive Incorrect calibrating data.
> Switch the machine off.
> Switch the machine on and at the same time push the
button «Needle left/right» and keep pressed.
> Calibrate the display again.
The eco-function is active.
> Touch the icon «eco».
Stitch width not adjustable The selected needle and stitch
plate cannot be used in
combination.
> Change the needle.
> Change the stitch plate.
036044.50.04_2014-09_Manual_740_EN
119


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