5
Contents
8.7) ASSEMBLY OF THREAD SENSOR AND FUNCTIONS ...................................................................................... 34
9. MAINTENANCE AND CHECKPOINTS
...........................................................................................................................................
35
9.1) REGULAR CHECKUP .............................................................................................................................................. 35
9.2) CLEANING ................................................................................................................................................................ 35
9.3) OIL SUPPLY .............................................................................................................................................................. 37
9.4) GREASE SUPPLY ..................................................................................................................................................... 39
9.5) TENSION CHECK OF EACH DRIVING BELT ...................................................................................................... 41
10. ADJUSTMENT
..................................................................................................................................................................................................
42
10.1) ADJUSTMENT OF TRIMMER .............................................................................................................................. 42
10.2) ADJUSTMENT OF TRIMMER RETURN SPRING LOCATION ......................................................................... 44
10.3) ADJUSTMENT OF PICKER ................................................................................................................................... 44
10.4) ADJUSTMENT OF UPPER THREAD HOLDING DEVICE ................................................................................ 45
10.5) ADJUSTMENT OF UPPER THREAD HOLDER .................................................................................................. 46
10.6) ADJUSTMENT OF NOISE CONTROLLER FOR PRESSER FOOT .................................................................... 47
10.7) RELATIONS BETWEEN PRESSER FOOT AND NEEDLE ................................................................................ 48
10.8) ADJUSTMENT OF HALF TURN FILM FOR COLOR CHANGE ....................................................................... 49
10.9) ADJUSTMENT OF ENCODER POSITION ........................................................................................................... 50
10.10) ADJUSTMENT OF NEEDLE BAR UP/DOWN POSITION ............................................................................... 51
10.11) ADJUSTMENT OF JUMP MOTOR ..................................................................................................................... 52
10.12) ADJUSTMENT OF TENSION OF EACH DRIVING BELT ............................................................................... 53
11. CAUSES OF TROUBLE AND TROUBLESHOOTING
....................................................................................................
57