Stitch Width Stepping Motor; 4C Artista 640 Upper Thread Tension Stepping Motor; All Stepping Motors - Fritz Gegauf Bernina artista 630 Service Manual

4b Stitch width stepping motor:
What to test:
•
Press icon to start and stop test.
•
The stitch width stepping motor moves back and forth, the needle bar
to left and right.
•
Test done! appears.
•
Test failed! appears if an error occurred.
•
Press ESC to exit the test.
Repairing note:
•
If a stepping motor does not spin, the failure might be with the stepping motor or the S-Print. Swap
the connections to find the defective PCB.
Attention: Not when machine is powered. Disconnect machine from mains supply.
•
If the error still occurs, check P-Print functioning and replace if necessary.

4c artista 640 upper thread tension stepping motor:

What to test:
•
Press icon to start and stop test.
•
The upper thread tension stepping motor moves back and forth.
•
Test done! appears.
•
Test failed! appears if an error occurred.
•
Press ESC to exit the test.
Repairing note:
•
If a stepping motor does not spin, the failure might be with the stepping motor or the S-Print. Swap
the connections to find the defective PCB.
Attention: Not when machine is powered. Disconnect machine from mains supply.
4d All stepping motors:
What to test:
•
Press icon to start and stop test.
•
All the stepping motors move back and forth.
Test done! appears.
•
Test failed! appears if an error occurred.
•
Press ESC to exit the test.
Repairing note:
•
If a stepping motor does not spin, the failure might be with the stepping motor or the S-Print. Swap
the connections to find the defective PCB.
Attention: Not when machine is powered. Disconnect machine from mains supply.
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