ii
CHAPTER 6 MAINTENANCE AND INSPECTION ............................................................................. 6-1
6-1) CHECK POINTS FOR REGULAR INSPECTION .............................................................. 6-1
6-2) CLEANING ........................................................................................................................... 6-1
6-3) OIL SUPPLY ......................................................................................................................... 6-3
6-4) DRIVE BELT TENSION ....................................................................................................... 6-8
CHAPTER 7 MACHINE ADJUSTMENTS ............................................................................................ 7-1
7-1) ADJUSTING THE TRIMMERS ........................................................................................... 7-1
7-1-1) ADJUSTING THE POSITION OF THE TRIMMING CAM
(INSERT ANGLE OF MOVABLE BLADE) ........................................................ 7-1
7-1-2) ADJUSTING BLADE TENSION .......................................................................... 7-2
7-2) ADJUSTING THE TRIMMER RETURN SPRING ............................................................. 7-2
7-3) ADJUSTING UPPER THREAD HOLDING UNIT ...............................................................7-3
7-4) PICKER ADJUSTMENT ...................................................................................................... 7-4
7-5) ADJUSTING UPPER THREAD HOLDER .......................................................................... 7-5
7-6) ADJUSTING LOW-NOISE PRESSER FOOT ...................................................................... 7-6
7-7) RELATIONSHIP BETWEEN PRESSER FOOT AND NEEDLE ........................................ 7-7
7-8) CORRECT POSITION OF NEEDLE .................................................................................... 7-8
7-9) ADJUSTING HALF-TURN FILM FOR COLOR CHANGE ............................................... 7-9
7-10) JUMP MOTOR ADJUSTMENT ....................................................................................... 7-10
7-11) ADJUSTING DRIVE BELT TENSION ............................................................................ 7-11
7-11-1) Y-AXIS TIMING BELT ..................................................................................... 7-11
7-11-2) X-AXIS TIMING BELT ..................................................................................... 7-12
7-11-3) TIMING BELT ON MAIN SHAFT MOTOR .................................................... 7-12
7-12) LAMP (OPTIONAL) ......................................................................................................... 7-13
7-12-1) LAMP SOCKET ADJUSTMENT (4-HEAD) .................................................... 7-13
7-12-2) DISASSEMBLING CABLE COVER (4-HEAD) .............................................. 7-13
CHAPTER 8 TROUBLESHOOTING ..................................................................................................... 8-1
CHAPTER 9
BLOCK DIAGRAM .......................................................................................................... 9-1