Bernina 740 Favorite, Руководство пользователя

Страница: 128 / 138

Errors and faults
126
Fault Cause Solution
Skipped stitches Incorrect needle. > Use the needle system 130/705H.
Needle blunt or bent. > Replace the needle.
Poor quality needle. > Use a new BERNINA quality needle.
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.
Incorrect needle point. > Match the needle point to the texture of the material.
Faulty stitching Thread remnants between the
thread tension discs. > Fold a piece of thin material and slide the folded edge
(not the raw edges) between the thread tension discs.
Incorrectly threaded. > Rethread.
Thread remnants below the
bobbin case spring. > Remove the thread remnants under the spring.
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 the nearest specialized BERNINA dealer to have
the damages repaired.
> Replace the stitch plate.
The thread is caught in the area
of the thread take-up lever.
1
> Remove the screw (1) on the headframe with the
angular Torx Screwdriver.
> Pull the headframe at the bottom slighty forward.
> Flip the headframe upwards a bit and remove it.
> Remove the thread remnants.
> Attach the headframe 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 the nearest specialized BERNINA dealer to have
the damages repaired.
> Replace the stitch plate.
Needle blunt or bent. > Replace the needle.