Bernina 790 - Page 177

Attachment
178
Fault Cause Repair
Sewing 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.
The light of the «Start-/Stop»
button doesn't light up
Light is defect.
> 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.
Upper thread indicator doesn't
react
Settings in the Setup Program.
> Activate it in the Setup Program.
The upper thread indicator is
defect.
> Contact the specialized BERNINA dealer.
Bobbin thread indicator
doesn't react
Settings in the Setup Program.
> Activate it in the Setup Program.
The bobbin thread indicator is
defect.
> Contact the specialized BERNINA dealer.
Error during software update USB stick is not recognized.
> Use a BERNINA USB stick.
The update process is blocked
and the hourglass on the display
is inactive.
> Remove the USB stick.
> Switch the machine off.
> Switch the machine on.
> Follow the instruction on the display.
Date of the software update
cannot be found.
> Unzip the update data.
> Save data of the software update directly on the data
medium and not in a file on the USB stick.
035964.50.04_2014-08_Manual_B790_EN