INDEX
What to do when.............................................................................................................................. 1 to 3
CHANGING EXTERNAL PARTS
FACE COVER .........................................................................................................................................4
FREE ARM COVER ...............................................................................................................................5
FRONT COVER ...............................................................................................................................6 to 7
REAR COVER .........................................................................................................................................8
MECHANICAL ADJUSTMENT
PRESSER BAR HEIGHT ........................................................................................................................9
NEEDLE DROP POSITION ...................................................................................................................10
ADJUSTMENT OF HOOK TIMING .......................................................................................................11
ADJUSTMENT OF NEEDLE BAR HEIGHT ..........................................................................................12
CLEARANCE BETWEEN NEEDLE AND TIP OF THE ROTARY HOOK ..............................................13
FEED DOG HEIGHT .............................................................................................................................14
FEED DOG ADJUSTMENT ...................................................................................................................15
TOP TENSION ......................................................................................................................................16
STRETCH STITCH FEED BALANCE ...................................................................................................17
ADJUSTING BUTTONHOLE LEVER POSITION ..................................................................................18
REPLACING AND ADJUSTING THE PRESSER FOOT LIFTER SWITCH UNIT .................................19
REPLACING AND ADJUSTING THE KNEE LIFTER WIRE UNIT ...............................................20 to 21
REPLACING AND ADJUSTING THE NEEDLE THREADER HOLDER .......................................22 to 23
THREAD CUTTER ................................................................................................................................24
SELF-DIAGNOSTIC TEST
SELF-DIAGNOSTIC TEST ...........................................................................................................25 to 30
TO DISPLAY THE VERSION OF THE PROGRAM ...............................................................................30
REPLACING THE ELECTRONIC COMPONENTS
PRINTED CIRCUIT BOARD A CONNECTION .....................................................................................31
PRINTED CIRCUIT BOARD A ..............................................................................................................32
DRIVING MOTOR .................................................................................................................................33
SWITCHING REGULATOR UNIT ..........................................................................................................34
CLEANING AREA OF THREAD CUTTER AND LOWER SHAFT GEAR ..............................................35
KEY POSITION ADJUSTMENT ............................................................................................................36
TOUCH PANEL KEY POSITION ADJUSTMENT GUIDE PRINTED
THE ILLUSTRATION (ACTUAL SIZE) .............................................................................................37
PARTS LIST .................................................................................................................................38 to 53
