104
1st replacement pt.
Fault
2nd replacement pt. 4th replacement pt.
3rd replacement pt.
5th replacement pt.
Slide block jams or
has too much play
Feed out of step
(straight stitch sewn with long
curves)
feed stepping motor
upper circuit board /
lower circuit board
Needle bar frame
jams or is loose
Zigzag movement of needle
out of step (straight stitch
sewn)
zigzag stepping motor upper circuit board /
lower circuit board
adjust synchronizer
Take-up lever top position
and needle down position
exchange
synchronizer
upper circuit board /
lower circuit board
foot control
Speed control
(faster or slower)
lower circuit board
(power pack)
main motor upper circuit board
Change sewing lamp
Sewing lamp does not light up
power pack
upper circuit board
To Next Page
Loading...
Need help?
General
