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Troubleshooting
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Service Instructions D869 e-con - 00.0 - 09/2023
Code
Type
Meaning
Information
Left thread tension magnet is not
connected
Information
Reference failure (right) thread
tension
Information
Reference failure left thread tension
Information
Maintenance required
Information
Bobbin winder over temperature
Information
Needle thread monitor (right)
Information
Bobbin thread is broken
Information
Needle thread monitor (right)
Information
No loop (right)
Information
Bobbin Rotation Monitor
Information
SSD sensor is soiled
Information
No loop (left)
Information
Bobbin Rotation (left)
Information
Clean Loop Control sensor (left)
Information
Failure in thread trimmer process
Information
Failure in the motor referencing
process
Warning
Failure SD-Card
Warning
OP3000: Connection lost
Corrective
• Check the connection of left thread
tension magnet
• Restart the machine
• Restart the machine
• For information on maintenance of
the machine, see the service
instructions for the machine
• The bobbin winder was running too
long. The bobbin winder is
deactivated for 30 minutes.
• Check the needle thread (right).
• Check the bobbin thread
• Check the needle thread (left).
Skip stitch monitor
• The sensor of the skip stitch
monitor detected during the sewing
process that the loop of the needle
thread was not taken up, resulting
in a "skip stitch".
• The bobbin is not rotating
• Check the bobbin, advance
the initial thread
• Use compressed air or a soft
cotton cloth to clean the sensor
Skip stitch monitor
• The sensor of the skip stitch
monitor detected during the sewing
process that the loop of the needle
thread was not taken up, resulting
in a "skip stitch".
Bobbin Rotation Monitor
• The sensor of the bobbin rotation
monitor detected during the sewing
process that no hook thread was
consumed and that the seam was
apparently not created properly.
Sensors soiled
• The optical sensors for the skip
stitch monitor, the bobbin rotation
monitor and the remaining thread
monitor are soiled and deliver no
reliable signal. Please clean dirt off
the sensors using compressed air
or a soft brush.
• Perform software update
• Check motor
• Perform software update
• Insert SD card
• Replace the control
• Check connection to OP3000
• Replace OP3000
• Replace the control
215
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