
66
Failure to Detect
Trimming and
Return
Short Remaining
Upper Thread
After Trimming
①
Poor connection of the
sensor connector
②
Bad board
③
Faulty sensor and wrong
position of the return sensor
controller body
①
Failure to separate the
upper thread since the entry
of the moving blade is too
fast or slow
②
Inappropriate distance
between the moving blade
and the rotary hook
③
Inappropriate location of
the picker
④
Faulty operation of the
picker
■
Check the status of the
connector connection
■
Replace the board on the
rear side of the controller
box
■
Replace the sensor
■
Remove the foreign
materials around the sensor
■
Adjust the location of the
return sensor controller
body
■
Adjust the initial position of
the moving blade
■
Adjust the distance between
the moving blade and the
hook
■
Adjust the location of the
picker
■
Check the
fuse on
the front side of the
controller box and replace it
■
Check the solenoid
connection terminal and
replace the solenoid
■
Check the connector
connection status and
replace the board on the
rear side of the controller
box
■
Check the rated
voltage of the fuse
1) For 3-phase
: 250V 15A
2) For 1-phase
: 250V 15A
Corrective Action and Check Point
Cause of Trouble
Type
Remarks