13
4
Cause
Malfunction of the threading body
Malfunction of the base tension
Malfunction of the mis-threading preventing plate
Rising amount of the auxiliary roller cover
Corrective measure
• Installing position of the face plate is improper.
• The face plate inside cover is moved to the right.
(The face plate installing plate is slantly attached.)
• Defective change-over of STM
• Check the motion of the base tension.
• Check the motion of the mis-threading preventing plate.
Trouble
Defective threading to the
thread take-up spring and
thread take-up lever
(a)
(b)
(c)
(d)
To Next Page
Loading...
