Janome MC6300P, Service Manual

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To remove face plate and top cover ............................................................................1
To remove belt cover and machine base.....................................................................2
To remove auto thread cutter cover.............................................................................3
To remove front cover .................................................................................................4
To remove cover..........................................................................................................5
To remove thread guide ..............................................................................................6
To remove circuit board “A” and fuse ..........................................................................7
To remove circuit board “K” ........................................................................................ 8
To remove tcircuit board “F” and speed control lever ................................................. 9
Connection of connectors .........................................................................................10
.. .. .. . ........................................................................... 11
To adjust hook timing ................................................................................................12
To adjust needle bar height .......................................................................................13
To adjust clearance between needle and rotary hook ...............................................14
To adjust backlash between hook drive gear and lower shaft gear ...........................15
To adjust direction of presser bar and its height ....................... ....................... ..................16
To adjust feed dog height ......................................................................................... 17
To remove needle thread tension unit .......................................................................18
To adjust tension release mechanism (1)..................................................................19
To adjust tension release mechanism (2)..................................................................20
To adjust upper thread tension ................................................................................21
To adjust bobbin winder ............................................................................................22
To adjust needle threader plate .................................................................................23
....................... ....................... ................24
..........................................25
.......................... ........................................................26
To adjust thread supply control lever .........................................................................27
Setting position of thread take up lever .....................................................................28
To adjust the upper shaft declutch device .................................................................29
Setting positions of parts on lower shaft....................................................................30
Setting positions of upper and lower shafts...............................................................31
To replace driving motor ...................................... ....................... ....................... ....................... ..............32
To adjust zigzag timing ..............................................................................................33
To adjust buttonhole lever position ............................................................................34
To adjust stretch stitch feed balance .........................................................................35
To adjust presser bar foot lifter switch position .......................................... ........... . 36
To adjust switch position auto thread cutter .................... .................... ......................................37
To adjust position of solenoid for upper shaft declutch device ..................................38
To adjust postion of solenoid for auto thread cutter ..................................................39
To adjust position of solenoid for bobbin idling prevension lever ..............................40
Diagnosis chart ......................... ......................... ................................................................. 41 – 4 6
How to find the version of the operating system program of the machine ................47
When the feed dog does not return to “UP” position .................................................48
TABLE OF CONTENTS
To adjust needle drop position
Replacement of the thread cutter unit (new type)
....................... Replacement of the thread cutter unit (old type)
To adjust position of sliding plate