Bernina 790 PRO Manual page 189

Fault
Needle Breaks
Display is Inactive
Stitch Width Not Adjustable
Speed Too Low
The Machine doesn't Start
The Light of the Button
"Start-/Stop" doesn't Light Up
Neither the Sewing Light Nor
the Light on the Freearm
Lights Up
Upper Thread Indicator Fails
to Respond
Cause
The needle is incorrectly inserted.
Fabric was pulled.
Thick fabric has been pushed.
Knotted thread.
Incorrect calibrating data.
The eco Mode is active.
The selected needle and stitch
plate cannot be used in
combination.
The «Presser Foot Indicator/
Presser Foot Selection» prevents
the adjustment of the stitch
width.
Unfavorable room temperature.
Settings in the Setup Program.
Unfavorable room temperature.
The machine is damaged.
Light is defect.
Settings in the Setup Program.
The sewing light is defect.
Settings in the Setup Program.
The upper thread indicator is
defect.
Solution
> 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.
> Feed the fabric evenly.
> Use a suitable presser foot, e. g. Jeans Foot #8, for thick
fabric.
> Use the height compensating tool when sewing over a
thick seam.
> Use quality thread.
> Recalibrate the display. ( 60)
> If calibration cannot be selected in the Setup Program,
switch the machine on again while simultaneously
pushing and holding the buttons «Needle Position Right/
Left».
> Tap «eco Mode».
> Replace the needle.
> Replace the stitch plate.
> Select the fitted presser foot.
> Place the machine in a warm room one hour before use.
> Adjust the sewing speed in the Setup Program.
> Adjust the slide.
> Place the machine in a warm room one hour before use.
> Connect the machine and switch it on.
> Contact your authorized BERNINA dealer.
> Contact your authorized BERNINA dealer.
> Activate it in the Setup Program.
> Contact your authorized BERNINA dealer.
> Activate it in the Setup Program.
> Contact your authorized BERNINA dealer.
Errors and Faults
189