INDEX
WHAT TO DO WHEN .......................................................................................................................... 1-3
FACE COVER .........................................................................................................................................4
FREE-ARM COVER ...............................................................................................................................5
FRONT COVER ......................................................................................................................................6
REAR COVER .........................................................................................................................................7
PRESSER BAR HEIGHT ........................................................................................................................8
NEEDLE DROP POSITION .....................................................................................................................9
ADJUSTMENT OF HOOK TIMING .......................................................................................................10
FEED DOG HEIGHT .............................................................................................................................13
TOP TENSION ......................................................................................................................................14
SELF-DIAGNOSTIC TEST
SELF-DIAGNOSTIC TEST .............................................................................................................. 18-23
PRINTED CIRCUIT BOARD A ..............................................................................................................25
PRINTED CIRCUIT BOARD F2 ............................................................................................................26
PRINTED CIRCUIT BOARD F1 ............................................................................................................27
PRINTED CIRCUIT BOARD L...............................................................................................................28
DRIVING MOTOR (DC MOTOR) ..........................................................................................................29
SWITCHING REGULATOR UNIT ..........................................................................................................30
PARTS LIST .................................................................................................................................... 31-45