Baby Lock Ellisimo BLSO, Service Manual

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6 - 2
Repair Manual
Problem Primary factors and causes Repair method Items for
Inspection
Inspection method
and standards
1 Stitch skipping
Thread abrasion
Thread breakage
Seam unevenness
Needle breaks Needle tip damaged while
sewing
Needle catches and bends
before or after sewing Needle replacement Tip damage to
needle Touch the needle tip
with your finger, be
sure that it is not
damaged. (4-2)
Needle curvature Remove the needle,
place on level block
(horizontal block) and
be sure there is no
curvature. (4-2)
2 Power supply
enter, but LCD
display nothing Lead wire assy main-panel
connector disconnected Plug connector in (2-49) Sewing machine
runs when
switched on When power is
switched ON, conform
that the LCD screen
light.
Lead wire assy:X1 inverter
connector disconnected Plug connector in (3-230)
Inlet assy and power supply unit
connector disconnected Plug connector in (2-44)
Power supply PCB assy. and
main PCB assy. connector
disconnected Plug connector in (2-45)
LCD module assy. and panel
PCB assy. FFC disconnected Lock FFC after plug FFC in
connector (3-229)
LCD module assy. and inverter
PCB assy. connector
disconnected Plug connector in (3-230)
Broken lead wire assy main-
panel Replace lead wire assy main-
panel (2-8) (2-49)
Broken lead wire assy:X1
inverter Replace lead wire assy:X1
inverter (3-13) (3-230)
Bad inlet assy. Replace inlet assy.
(3-31) (3-212)
Bad power supply PCB assy. Replace power supply unit
(3-31) (3-212)
Bad main PCB assy. Replace main PCB assy.
(2-12) (2-45)
Bad LCD module assy. Replace LCD module assy.
(3-15) (3-229)
Bad power supply cord Replace power supply cord
Sewing machine
lamp (LED lamp)
does not light Bad LED lamp PCB assy. Replace LED lamp PCB assy.
(3-79) (3-153)
Lead wire assy. and main PCB
assy. connector disconnected Plug connector in (2-45)
Broken lead wire assy. Replace lead wire assy.
(2-23) (2-32)
Bad main PCB assy. Replace main PCB assy.
(2-12) (2-45)
START/STOP
lamp does not light SS PCB assy. and panel PCB
assy. connector disconnected Plug connector in (3-236)
Bad lead wire assy SS Replace SS PCB assy.
(3-10) (3-234)
Bad SS PCB assy.
Bad panel PCB assy. Replace panel PCB assy.
(3-13) (3-231)
Bad main PCB assy. Replace main PCB assy.
(2-12) (2-45)
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