Janome Sewist 780DC Bruksanvisning
Läs nedan 📖 manual på svenska för Janome Sewist 780DC (35 sidor) i kategorin Symaskin. Denna guide var användbar för 9 personer och betygsatt med 4.5 stjärnor i genomsnitt av 2 användare
Sida 1/35
SERVICE MANUAL
MODEL: Sewist 780DC
First Edition: 19 December 2018
Contents
WHAT TO DO WHEN ........................................................................................................................ 1 - 3
CHANGING EXTERNAL PARTS
FACE COVER 4 .........................................................................................................................................
FREE-ARM COVER 5 ................................................................................................................................
FRONT COVER ......................................................................................................................................6
REAR COVER 7 .........................................................................................................................................
MECHANICAL ADJUSTMENT
PRESSER BAR HEIGHT ........................................................................................................................8
NEEDLE DROP POSITION 9 .....................................................................................................................
ADJUSTMENT OF HOOK TIMING 10 .......................................................................................................
ADJUSTMENT OF NEEDLE BAR HEIGHT ..........................................................................................11
CLEARANCE BETWEEN NEEDLE AND TIP OF THE ROTARY HOOK 12 ..............................................
FEED DOG HEIGHT .............................................................................................................................13
FEED DOG ADJUSTMENT ...................................................................................................................14
TOP TENSION ......................................................................................................................................15
STRETCH STITCH FEED BALANCE 16 ...................................................................................................
REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREAD PLATE 17 .........................................
ADJUSTING BUTTONHOLE LEVER POSITION 18 ..................................................................................
THREAD CUTTER 19 ................................................................................................................................
SELF-DIAGNOSTIC TEST
SELF-DIAGNOSTIC TEST .............................................................................................................. 20-25
TO DISPLAY THE VERSION OF THE PROGRAM 25 ...............................................................................
REPLACING THE ELECTRONIC COMPONENTS
PRINTED CIRCUIT BOARD A CONNECTION 26 .....................................................................................
PRINTED CIRCUIT BOARD A ..............................................................................................................27
PRINTED CIRCUIT BOARD F2 28 ............................................................................................................
PRINTED CIRCUIT BOARD F 29 ..............................................................................................................
PRINTED CIRCUIT BOARD L...............................................................................................................30
DRIVING MOTOR (DC MOTOR) 31 ..........................................................................................................
SWITCHING REGULATOR UNIT ..........................................................................................................32
CLEANING AREA OF THREAD CUTTER AND LOWER SHAFT GEAR ............................................33
PARTS LIST .................................................................................................................................... 34-47
1
Condition Cause How to fix Reference
1. Skipping
Stitches
1. Needle is not inserted properly.
2. Needle is bent or worn.
3. Incorrectly threaded.
4. Needle or thread are
inappropriate for the fabric
being sewn.
5. Sewing on stretch fabric.
6. Inappropriate needle bar height.
7. Inappropriate needle to hook
timing.
8. Inappropriate needle to hook
clearance.
Insert the needle properly.
Change the needle.
Rethread.
Use the recommended sewing needle
and thread.
Use a HAx1 #11 blue tip needle.
See mechanical adjustment “Needle bar
height”.
See mechanical adjustment “Adjustment
of hook timing”.
See mechanical adjustment “Clearance
between needle and tip of the rotary
hook”.
P. 11
P. 10
P. 12
2. Fabric not
moving
1. Incorrect feed dog height.
2. Feed dog is in down position.
3. Thread on bottom side of
fabric is jammed up.
4. Feed dog teeth are worn.
Adjust the presser bar level to make
the pressure stronger. See mechanical
adjustment “Feed dog height”.
Raise the feed dog.
Make sure to bring both needle and
bobbin threads under the foot when start
sewing.
Change the feed dog.
P. 13
WHAT TO DO WHEN
Produktspecifikationer
| Varumärke: | Janome |
| Kategori: | Symaskin |
| Modell: | Sewist 780DC |
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