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6-2.
Stitch length is not correct
Check following points:
height of feed dog (refer to page
timing for feed regulator (refer to page
(VR6 & VRB .
length
length for super automatic pattern
ance between terminal
33 ) .
refer to page
44).
(VR7.
Disconnect connector
P9
1 & 2 .
Measure the resistance between terminal
3 & 4
while feed regulating mechanism is
operated.
Exchange main circuit board units.
pressure lever. brake
36).
forward stitch
forward
&
back stitch
refer to page
45).
Yes
No
and measure the resist
No
Exchange linear actuator unit
No
- 74 -
Exchange linear actuator unit
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