Bernina 790 PRO - Troubleshooting

Errors and Faults
187
Message on the Display Cause Solution
«#1002» The button «Needle position Up/
Down» is stuck or defective.
> Make sure that the button can be operated without
restriction.
> If the error still occurs, contact your authorized BERNINA
dealer.
«#1003» The button «Start/Stop» is stuck
or defective.
> Make sure that the button can be operated without
restriction.
> If the error still occurs, contact your authorized BERNINA
dealer.
«#1004»
«#1005»
The exact cause of the
malfunction cannot be
determined.
> Restart the machine.
> If the error still occurs, contact your authorized BERNINA
dealer.
«#1010» The hook is blocked. > Check the hook for thread tangles and insert it correctly.
18.2 Troubleshooting
Fault Cause Solution
Uneven Stitch Formation
Upper thread too tight or too
loose.
> Adjust the upper thread tension.
> Check the thread feed from the thread spool.
Needle blunt or bent. > Replace the needle, make sure that a new BERNINA
quality needle is used.
Poor quality needle. > Use a new BERNINA quality needle.
Poor quality thread. > Use quality thread.
Incorrect needle/thread
combination.
> Match the needle with the thread size.
Incorrectly threaded. > Rethread.
Fabric was pulled. > Feed the fabric evenly.
Uneven Stitch Formation
Incorrect bobbin case is used. > Use the supplied bobbin case marked with the triangle.