Table Of Contents - Janome MC7700 QCP Service Manual

SERVICE ACCESS
FACE PLATE AND TOP COVER ............................................................................................................ 1
BELT COVER .......................................................................................................................................... 2
MACHINE BASE, BASE COVER AND BED COVER ............................................................................. 3
FREE-ARM COVER ................................................................................................................................ 4
FRONT COVER ...................................................................................................................................... 5
REAR COVER ........................................................................................................................................ 6
MECHANICAL ADJUSTMENT
NEEDLE DROP POSITION .................................................................................................................... 7
PRESSER BAR HEIGHT AND ALIGNMENT ................................................................................... 8-10
HOOK TIMING ...................................................................................................................................... 11
NEEDLE BAR HEIGHT ......................................................................................................................... 12
CLEARANCE BETWEEN NEEDLE AND ROTARY HOOK ................................................................................... 13
BACKLASH OF HOOK AND LOWER SHAFT GEARS ........................................................................ 14
FEED DOG HEIGHT ............................................................................................................................. 15
UPPER THREAD TENSION ................................................................................................................. 16
THREAD TENSION UNIT REPLACEMENT ......................................................................................... 17
THREAD TENSION MECHANISM ....................................................................................................... 18
CIRCUIT BOARD "F" REPLACEMENT ................................................................................................ 19
CIRCUIT BOARD "A" REPLACEMENT ................................................................................................ 20
CONNECTOR DIAGRAM ..................................................................................................................... 21
NEEDLE THREADER PLATE REPLACEMENT ................................................................................... 22
THREAD TENSION DRAWING LEVER ............................................................................................... 23
UPPER FEED DOG ADJUSTMENT (1) ......................................................................................... 24-25
UPPER FEED DOG HEIGHT ............................................................................................................... 26
DRIVING MOTOR ................................................................................................................................. 27
UPPER SHAFT SHIELD PLATE POSITION ......................................................................................... 28
CENTER NEEDLE POSITION ADJUSTMENT .................................................................................... 29
BUTTONHOLE LEVER POSITION....................................................................................................... 30
PRESSER BAR LIFTER SWITCH POSITION ...................................................................................... 31
THREAD CUTTER SENSOR POSITION ............................................................................................. 32
SWITCHING POWER SUPPLY REPLACEMENT ................................................................................ 33
SOLENOID POSITION ......................................................................................................................... 34
STRETCH STITCH FEED BALANCE ................................................................................................... 35
DIAGNOSIS TEST .........................................................................................................
INDEX INDEX
INDEX INDEX INDEX
36-39