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6-1
Zigzag width is not correct
.
Turn the power supply swttch off and move
needle bar right and left by hand.
AdJUSt rotauon
shutter.
(Refer to page
34 & 35)
D
PS
and measure the restst·
isconnect connector
ance between termmal
1 & 2.
N o
Exchange linear actuator unit.
Measure the resistance between terminal
3 & 4
on
PS
while needle bar is moving.
Yes
No
Exchange linear actuator unit.
Yes
Exchange main circuit board units.
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