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7-3) Intermediate presser pulse
3-A) Intermediate presser pulse
Replace the intermediate presser pulse motor.
motor malfunction
motor is out of order.
3-B) Connection of intermediate
Check the connector connections.
presser pulse motor is
improper.
7-4) Defective board
4-A) The board is out of order.
Replace the board.
4-B) Connector connections are
Check the connector connections.
improper.
8. The intermediate presser does not
8-1) There are some inadequate
Check for the inadequate fitting and rattling conditions
work during sewing.
fitting conditions in the inter-
in the link mechanism.
mediate presser link mechanism.
Examine the positions for greasing.
8-2) Intermediate presser variable
Intermediate presser variable adjustments.
is maladjusted.
8-3) Intermediate presser pulse
3-A) Intermediate presser pulse
Replace the intermediate presser pulse motor.
motor malfunction
motor is out of order.
3-B) Connection of intermediate
Check the connector connections.
presser pulse motor is improper.
8-4) Defective board
4-A) The board is out of order.
Replace the board.
4-B) Connector connections are
Check the connector connections.
improper.
8-5) The intermediate presser
Adjust the intermediate presser variable stroke.
stroke has decreased to 0mm.
9. Unusual sound is generated from
9-1) The clearance is too much
Adjust the clearance between the inner hook and the
the face section.
between the inner hook and
driver.
the driver.
9-2) The intermediate presser bar
Adjust the intermediate presser adjusting arm.
connection comes in contact
with the lower metal of the
intermediate presser needle bar.
Trouble
Cause (1)
Cause (2)
Check and corrective measures
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