SWF E-Series - Page 67

8-9
Error Type Cause
Excessive thread tension
Excessive pressure of
presser foot
Needle failure -
worn out/damaged needle
tip needle is too large for
thread
Needle hole is too large
for needle
Poor connection/quality of
trimming solenoid
Bad connection
Trimming driver TR
damaged
Inspection & Repair
Adjust tension
Change presser foot spring
Change needle
Use adequate size of needle
Check and change solenoid and
solenoid connection
Check connection
Change joint board
SWF/ needle holes
are 2.0mm
Reference
Puckering
Trimming failure