Bernina 790 PRO - Page 189

Errors and Faults
189
Fault Cause Solution
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.
Fabric was pulled. > Feed the fabric evenly.
Thick fabric has been pushed. > Use a suitable presser foot, e.g.Jeans Foot#8, for thick
fabric.
> Use the height compensating tool when sewing over a
thick seam.
Knotted thread. > Use quality thread.
Display is Inactive
Incorrect calibrating data. > 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».
The eco Mode is active. > Tap «eco Mode».
Stitch Width Not Adjustable
The selected needle and stitch
plate cannot be used in
combination.
> Replace the needle.
> Replace the stitch plate.
The «Presser Foot Indicator/
Presser Foot Selection» prevents
the adjustment of the stitch
width.
> Select the fitted presser foot.
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 your authorized BERNINA dealer.
The Light of the Button
“Start-/Stop” doesn't Light Up
Light is defect. > Contact your authorized BERNINA dealer.
Neither the Sewing Light Nor
the Light on the Freearm
Lights Up
Settings in the Setup Program. > Activate it in the Setup Program.
The sewing light is defect. > Contact your authorized BERNINA dealer.
Upper Thread Indicator Fails
to Respond
Settings in the Setup Program. > Activate it in the Setup Program.
The upper thread indicator is
defect.
> Contact your authorized BERNINA dealer.