Bernina Stitch Regulator (Bsr); Pcba-Position - Bernina B 590 Service And Maintenance Manual

4g BERNINA Stitch Regulator (BSR)
Is used to check BSR sensor function
Check:
• Attach BSR foot.
• Select test 4g.
• Place fabric under the presser foot.
• Lower presser foot.
• Press the icon to start the test.
• Move the fabric in different directions.
• The directions of the movement will be displayed in the
screen.
• The covered distances X and Y will be displayed in mm.
• To return to section 4, press
Repair note:
•
Check cables for deformation and/or wear and tear.
•
Check BSR foot for dust or stains.
•
Check BSR socket and connection.
•
Replace Check BSR socket.
•
Replace BSR foot.
4h PCBA-Position
Is used to check signals of PCBA-Base
Check:
• Select test 4h.
• Set needle bar to TDC.
• The colour of the checkbox changes to green.
• Set needle bar to TDC
• The colour of the checkbox changes to green.
• To return to section 4, press
Repair note:
• Calibrate magnetic position encoder
• Replace PCBA-Positon Hall
• Replace PCBA-Base
(see
BERNINA International AG
or .
or .
(see test 6o).
(see 4.2.5).
4.2.4).
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