Table Of Contents - ELNA eXperience 520 Service Manual

TABLE OF CONTENTS

WHAT TO DO WHEN
........................................................................................................ 1-3
SERVICE ACCESS (1)
FACE COVER ............................................................................... 4
SERVICE ACCESS (2)
BED COVER ................................................................................. 5
SERVICE ACCESS (3)(4)
FRONT COVER .................................................................... 6-7
SERVICE ACCESS (5)
REAR COVER ............................................................................... 8
MECHANICAL ADJUSTMENT
PRESSER BAR HEIGHT AND ALIGNMENT .............................................................................. 9
NEEDLE DROP POSITION ....................................................................................................... 10
NEEDLE TO SHUTTLE TIMING ................................................................................................ 11
NEEDLE BAR HEIGHT .............................................................................................................. 12
NEEDLE CLEARANCE TO SHUTTLE ...................................................................................... 13
BACKLASH (BETWEEN LOWER SHAFT GEAR AND SHUTTLE HOOK GEAR) .................... 14
FEED DOG HEIGHT .................................................................................................................. 15
ZIGZAG SYNCHRONIZATION .................................................................................................. 16
NEEDLE THREAD TENSION .................................................................................................... 17
STRETCH STITCH FEED BALANCE ........................................................................................ 18
REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREADER PLATE ....................... 19
CONNECTOR DIAGRAM .......................................................................................................... 20
SELF DIAGNOSTIC TESTS ...................................................................................................... 21
SELF DIAGNOSTIC SHEET ................................................................................................. 22-25
REPLACING PRINTED CIRCUIT BOARD A ............................................................................. 26
REPLACING SLIDE VOLUME AND PRINTED CIRCUIT BOARD F ......................................... 27
REPLACING DC MOTOR AND ADJUSTING MOTOR BELT TENSION .................................. 28
REPLACING THE FUSES ......................................................................................................... 29
REPLACING MACHINE SOCKET (UNIT) ................................................................................. 30
REPLACING THE TRANSFORMER ......................................................................................... 31
REPLACING THE ZIGZAG WIDTH MOTOR ............................................................................ 32
REPLACING THE FEED STITCH MOTOR ............................................................................... 33
ADJUSTING BUTTONHOLE LEVER POSITION ...................................................................... 34
ADJUSTING THE BOBBIN WINDER SWITCH ......................................................................... 35
OILING ....................................................................................................................................... 36