Basting Solenoid; Presser-Foot Recognition - Bernina B 590 Service And Maintenance Manual

4k Basting solenoid
Is used to check basting solenoid function
Only machines with basting devise
Check:
• Select test 4k.
• Press the icon. The basting solenoid will click, and 'Running'
appears.
• Press the icon again to stop the test. 'Successful' appears.
• To return to section 4, press
Repair note:
•
Check cables and plugs for deformation and/or wear and tear.
•
Replace basting solenoid.
•
Replace PCBA-Threader
•
Replace PCBA-Base
4l Presser-foot recognition
Is used to check presser-foot recognition
Only machines with Dual Feed
Check:
• Lift presser-foot bar.
• When a coded presser foot is attached, the machine
will recognize automatically if it is a 5.5mm or 9.00mm
presser foot.
Note: This machines are able to work with C and D
coded presser foot.
• Not coded presser feet will be set to 5.5mm automatically.
• With a buttonhole foot with slide (e.g. 3A), signals A and B
can be tested by moving the slide.
• To return to section 4, press
Repair note:
If the presser-foot recognition doesn't work, repeat the test with
another presser foot of the same group.
•
Check cables for deformation and/or wear and tear.
•
If the presser-foot recognition still fails to work, clean ABC sensor support. Replace ABC
sensor support if necessary.
•
Replace PCBA-Base
BERNINA International AG
or .
(see 4.2.6).
(see 4.2.4).
or .
(see 4.2.4).
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