Programming
Service Instructions 867-M PREMIUM - 03.0 - 05/2017 129
Test Step Motor subitem
You use this subitem to test stepper motors for stitch length adjustment, sew-
ing foot lifting/sewing foot pressure and stroke adjustment. The machine can
move to defined positions (steps), where 2000 steps = 360.
To test the stepper motors:
1. Select the desired motor with the
/ buttons in the Stepper field.
Fig. 98: Test Step Motor subitem
2. Press the OK button to confirm the selection.
3. Use the
/ buttons to test the selected motor.
If the motor is functioning correctly, the behavior described in the
table will be shown.
Information
There is no specific procedure for testing the stepper motor encoders.
The encoders are tested along with the stepper motors. If the result for the
stepper motors is OK, the encoders will be functional as well.
Input Stepper motor
1 Stitch length adjustment
2 Sewing foot lift
3 Stroke adjustment
Input Stepper motor Test method
1 Stitch length adjustment (x30) The feed gear completes a movement.
2 Sewing foot lift (x40) The sewing feet perform a vertical movement.
3 Stroke adjustment (x50) The lifting gear completes a movement.
Position:
Stepper :
OFF(0)
1
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