Order
1
2
3
Failure Status
Problem in machine
driving and operation
Failure Cause
Excessive relaxation of belt tension or
belt breakage
Short of fuse for power supply or circuit
Actions
Belt tension adjustment and belt replacement
After checking short of main motor drive fuse
in control box and replace
Defect of Stop Location
Relaxation of main driving belt
Defect of synchro location
Belt tension adjustment
Readjustment of synchro location
Needle broken
4
Cutting phenomenon of
thread
Damage to needle (bending of needle
or abrasion and deformation of needle
hole or groove in groove part and
needle string)
Needle replacement
Mounting of wrong needle Proper mounting of needle
Contact of needle and shuttle Interval adjustment of needle and shuttle
Thread inserting is not correct
Strong tension of upper thread and
lower thread
Proper insertion of needle
Defective mounting of needle (height,
direction and etc.)
Needle remounting
Needle damage (bending or abrasion
and deformation of needle hole or
groove in groove part and needle string)
Needle replacement
Tension adjustment
Excessive spring tension and operation
of thread take-up spring
Adjustment of thread take-up spring tension
and operation
·Check the below points before you request the repair service.
·If the below process does not improve the status, turn off the power switch and ask to the purchase sales agent.
Danger
·Turn off the power switch before work and pull of the plug.
If you step on the pedal by mistake, the sewing machine starts operating and it becomes cause of injury.
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