Baby Lock Ellisimo BLSO Service Manual page 64

Repair Manual
Problem Primary factors and causes
1 Stitch skipping Needle tip damaged while
Thread abrasion sewing
Thread breakage Needle catches and bends
Seam unevenness before or after sewing
Needle breaks
2 Power supply Lead wire assy main-panel
enter, but LCD connector disconnected
display nothing
Lead wire assy:X1 inverter
connector disconnected
Inlet assy and power supply unit
connector disconnected
Power supply PCB assy. and
main PCB assy. connector
disconnected
LCD module assy. and panel
PCB assy. FFC disconnected
LCD module assy. and inverter
PCB assy. connector
disconnected
Broken lead wire assy main-
panel
Broken lead wire assy:X1
inverter
Bad inlet assy.
Bad power supply PCB assy.
Bad main PCB assy.
Bad LCD module assy.
Bad power supply cord
Sewing machine Bad LED lamp PCB assy.
lamp (LED lamp)
does not light
Lead wire assy. and main PCB
assy. connector disconnected
Broken lead wire assy.
Bad main PCB assy.
START/STOP SS PCB assy. and panel PCB
lamp does not light assy. connector disconnected
Bad lead wire assy SS
Bad SS PCB assy.
Bad panel PCB assy.
Bad main PCB assy.
6 - 2
Repair method
Needle replacement
Plug connector in (2-49)
Plug connector in (3-230)
Plug connector in (2-44)
Plug connector in (2-45)
Lock FFC after plug FFC in
connector (3-229)
Plug connector in (3-230)
Replace lead wire assy main-
panel (2-8) (2-49)
Replace lead wire assy:X1
inverter (3-13) (3-230)
Replace inlet assy.
(3-31) (3-212)
Replace power supply unit
(3-31) (3-212)
Replace main PCB assy.
(2-12) (2-45)
Replace LCD module assy.
(3-15) (3-229)
Replace power supply cord
Replace LED lamp PCB assy.
(3-79) (3-153)
Plug connector in (2-45)
Replace lead wire assy.
(2-23) (2-32)
Replace main PCB assy.
(2-12) (2-45)
Plug connector in (3-236)
Replace SS PCB assy.
(3-10) (3-234)
Replace panel PCB assy.
(3-13) (3-231)
Replace main PCB assy.
(2-12) (2-45)
66
Items for Inspection method
Inspection and standards
Tip damage to Touch the needle tip
needle 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)
Sewing machine When power is
runs when switched ON, conform
switched on that the LCD screen
light.