1
MO200
5200QDC
CONTENTS
SERVICE ACCESS (1) TOP COVER, FACE COVER .................................................... 2
SERVICE ACCESS (2) BASE, BED COVER .................................................................. 3
SERVICE ACCESS (3) BELT COVER ............................................................................ 4
SERVICE ACCESS (4) FRONT COVER ........................................................................ 5
SERVICE ACCESS (5) REAR COVER ........................................................................... 6
PRESSER BAR HEIGHT AND ALIGNMENT .................................................................. 7
NEEDLE DROP POSITION ............................................................................................ 8
NEEDLE TO HOOK TIMING ........................................................................................... 9
NEEDLE BAR HEIGHT ................................................................................................. 10
NEEDLE CLEARANCE TO SHUTTLE........................................................................... 11
BACKLASH (BETWEEN LOWER SHAFT GEAR AND HOOK DRIVE GEAR) ............ 12
FEED DOG HEIGHT ..................................................................................................... 13
ZIGZAG SYNCHRONIZATION ..................................................................................... 14
NEEDLE THREAD TENSION ....................................................................................... 15
STRETCH STITCH FEED BALANCE ........................................................................... 16
REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREADER PLATE............ 17
ADJUSTING BUTTONHOLE LEVER POSITION ......................................................... 18
CONNECTOR DIAGRAM ............................................................................................. 19
SELF DIAGNOSTIC TESTS .................................................................................. 20 - 23
REPLACING PRINTED CIRCUIT BOARD A AND FUSES ........................................... 24
REPLACING PRINTED CIRCUIT BOARD K AND SLIDE VOLUME ............................ 25
REPLACING PRINTED CIRCUIT BOARD F AND PRINTED CIRCUIT BOARD L....... 26
REPLACING DC MOTOR AND ADJUSTING MOTOR BELT TENSION ..................... 27
REPLACING MACHINE SOCKET (UNIT) .................................................................... 28
REPLACING THE TRANSFORMER............................................................................. 29
REPLACING THE ZIGZAG WIDTH MOTOR ................................................................ 30
REPLACING THE FEED STITCH MOTOR .................................................................. 31
REPLACING THE NEEDLE PLATE MOTOR ............................................................... 32
PARTS LIST ........................................................................................................... 33 - 55
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