12-3
Error Type
Cause
①
Failure of thread detecting
roller
②
Poor connection & quality
of tension adjusting plate
①
Short-circuit of fuse for
jump circuit
②
Bad solenoid and bad
solenoid wiring
③
Bad connection
④
Switch failure on tension
adjusting board and bad
circuit board
①
Bad tape
②
Inadequate tension on X-
Y belt
③
Foreign substance in X-Y
rail
④
Failure of X/Y driver board
⑤
Heavy load on frame
Inspection & Repair
Disassemble the roller and clean
the roller and bush bearing.
Check the plate connection and
change the circuit board
Change front fuse F3 in joint
board
Check wiring and change
solenoid
Check connection
Change switch and circuit board
Correct tape
Adjust tension
Clean the rail
Change circuit board
Reduce speed of main shaft
※
Check fuse spec
Ref. 9-1, 9-1)
Reference
Poor detection
of upper thread
Bad jump
Bad stitch
quality