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Janome Skyline S7, Service Manual

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Janome Skyline S7 Service Manual Download Page 13

11

Replacing electronic components

DC motor

NOTE:

Do not disconnect  connectors by pulling on cord.

To disconnect the connectors, grasp the connector, 

not the cord.

To remove:

1. Remove the belt cover, the top cover and the front 

  cover (see pages 1, 2 and 5).

2. Disconnect the DC motor connector from the printed 

  circuit board A (see page 8).
3. Remove the motor belt.

4. Remove the setscrews (2 pcs), and the DC motor.

To attach:

1. Attach the DC motor and slightly tighten the setscrews.

2. Attach the motor belt and adjust the belt tension. 

  Push the middle of the belt span with approximately 

  200 grams pressure. Adjust the motor position so that 

  the belt deflects 5 mm.
3. Tighten the setscrews securely.

4. Connect the DC motor connector to the printed circuit 

  board A (see page 7).

5. Attach the front cover, the top cover and the belt cover.

Setscrews

Setscrews

Motor belt

200 gr pressure

5 mm

Summary of Contents for Skyline S7

Page 1: ...SERVICE MANUAL SKYLINE S7 First Edition 7 August 2015...

Page 2: ...3 Needle drop position 14 Presser bar height 14 Clearance between needle and tip of the rotary hook 15 16 Hook timing 17 Needle bar height 18 Backlash between hook drive gear and lower shaft gear 19 U...

Page 3: ...s A Belt cover To remove 1 Remove the cap and setscrew B 2 Remove the setscrew C 3 Loosen the two setscrews D 4 Pull the rear side of the belt cover to disengage it from the rear cover 5 Remove the be...

Page 4: ...the top cover and raise the carrying handle Pull the top cover toward you to remove it To attach Follow the above procedure in reverse To attach the flange plate put the flange plate on to the bobbin...

Page 5: ...e procedure in reverse Base cover To remove 1 Remove the setscrews B 2 Remove the base cover To attach Follow the above procedure in reverse Bed cover To remove 1 Remove the setscrews C 2 Remove the b...

Page 6: ...the left 4 Pull out the free arm cover forcedly to the left while pulling open the front side to disengage the hook B and remove the free arm cover To attach 1 Place the free arm cover on the free ar...

Page 7: ...etscrew C behind the face cover 5 Loosen the setscrew D inside of the machine body 6 Unlock the hooks from the front cover 7 While pushing the rear cover through the hole A with a screwdriver remove t...

Page 8: ...cover see pages 1 3 2 Loosen the setscrew A 3 Loosen the setscrew B 4 Remove the four setscrews C 5 Push the rear cover from the holes D and E with a screwdriver to remove the hook of rear cover 6 Rem...

Page 9: ...and replace the threader hook Refer the following part number when ordering service parts 862627005 Hook holder unit To attach 1 Assemble the threader unit and attach them to the threader shaft by in...

Page 10: ...34 Embroidery foot height see page 35 CNASP1 Blue CNALCD1 CNATP1 CNAL1 Black CNAL2 White CNAP1 Black CNACTT1 Black CNAUSB1 Black CNABM1 White CNATTM1 Black CNAUDM1 Black CNAM1 White CNADD1 Brown CNAN...

Page 11: ...t board A see page 8 3 Remove the CS rings 4 Remove the setscrews and the printed circuit board F To attach Follow the above procedure in reverse Speed control slider To remove 1 Remove the front cove...

Page 12: ...wer supply connector from the switching power supply unit 3 Remove the foot control connector from the printed circuit board A see page 7 4 Remove the setscrews and switching power supply To attach Fo...

Page 13: ...move the motor belt 4 Remove the setscrews 2 pcs and the DC motor To attach 1 Attach the DC motor and slightly tighten the setscrews 2 Attach the motor belt and adjust the belt tension Push the middle...

Page 14: ...remove 1 Remove the belt cover and the top cover see page 1 and 2 2 Remove the front cover see page 5 3 Disconnect the thread tension motor connector from the printed circuit board A see page 8 4 Remo...

Page 15: ...sen the setscrew A 6 Loosen the nut with a socket wrench Turn the adjusting screw and adjust the feed dog hight to 0 85 mm 7 Tighten the nut and setscrew A 8 Turn the handwheel and check that the feed...

Page 16: ...be 0 2 mm or more 1 Attach the 14 needle Turn the power switch ON and select straight stitch 1 2 Check the clearance between the needle and the side of the needle hole when the needle drop position is...

Page 17: ...on The LCD shows the factory setting mode Press Bobbin key The machine will set the zigzag width at maximum 5 Turn the handwheel toward you until the tip of the hook comes behind the test pin 6 Loosen...

Page 18: ...ghten the setscrew C lightly 3 Turn the handwheel toward you until the tip of the hook comes behind the test pin Adjust the clearance between the needle and the tip of the rotary hook by moving the ho...

Page 19: ...e switch OFF 4 Remove the presser foot the needle plate and the bobbin holder see page 4 5 Turn the handwheel toward you to lower the needle at its lowest position 6 Loosen the setscrews A use an Alle...

Page 20: ...e needle bar height Tighten the hexagonal socket screw Be careful not to turn the needle bar 7 Attach the bobbin holder and the needle plate Hexagonal socket screw Needle setting groove Needle bar Nee...

Page 21: ...ate 3 Turn the handwheel toward you so the tip of the rotary hook is within the width of feed dog as shown Check the rotary play of the hook 4 If the backlash is too much or too little loosen the hexa...

Page 22: ...ing Mode Press Phase key 3 Turn the handwheel toward you slowly to bring the needle up from its lowest The indication below Bight changes from L to H 4 The needle height should be 7 2 to 8 2 mm above...

Page 23: ...pproximately 110 mm sec in the direction of arrow 1 Turn the power switch ON while pressing the Start Stop button and the Reverse stitch button The LCD shows the Factory Setting Mode Press BH Sensor k...

Page 24: ...elease mechanism should work correctly 1 Remove the belt cover and top cover see pages 1 2 2 Remove the front cover see page 5 3 Turn the power switch off Turn the thread tension gear until the convex...

Page 25: ...not aligned vertically with the needle eye loosen the setscrew A Adjust the stopper position so that the hook enters into the needle eye Tighten the setscrew A 3 If the threader hook is not aligned l...

Page 26: ...ver from the surface of bobbin holder should be in the range of 5 5 6 0 mm 1 Remove the presser foot the needle plate and the bobbin holder 2 Loosen the hexagonal socket bolt use an Allen key of 1 5 m...

Page 27: ...r feed link shaft Upper feed lower shaft Mechanical adjustment Upper feed dog 1 The clearance between the upper feed link shaft and upper feed lower shaft should be 2 5 mm when the upper feed adjustin...

Page 28: ...To adjust 1 Remove the top cover see page 2 2 Loosen the hexagonal socket screws on upper feed rear arm use an Allen wrench of 2 mm width across flats 3 Insert the 4 mm spacer between the upper feed d...

Page 29: ...he needle plate and there is no gap to allow the foot flapping If not adjust it as follows To adjust 1 Open the face plate Loosen the hexagonal socket bolt use an Allen wrench with 2 5 mm width across...

Page 30: ...en the setscrew on the buttonhole lever guide Move the buttonhole lever guide to the left to adjust the position Tighten the setscrew when the indication below BH Sen changes from H to L 3 Attach the...

Page 31: ...ed and moving cutter moves to its home position automatically 3 The distance between the end of moving cutter and the end of thread cutter plate slit should be 0 4 to 1 2 mm If not adjust it as follow...

Page 32: ...e presser foot Turn the power switch OFF 3 Raise the presser foot with the presser foot lifter You must use the presser foot lifter to raise the presser foot for this adjustment otherwise you cannot a...

Page 33: ...to 39 8 mm Presser foot lifter stopper Presser foot spring release base Setscrew G 4 Remove the setscrews D and E Remove the thread motor unit from the carrying handle supporter Be careful that the t...

Page 34: ...ou to lower the needle Raise the presser foot lifter Loosen the hexagonal socket screw use an Allen wrench of 2 5 mm width across flats of the presser foot lifter stopper from the front side of the ma...

Page 35: ...th your hand to raise the presser foot 4 Place a 13 mm thick spacer between the presser foot and the needle plate Lower the presser foot on the spacer firmly by turning the gear A 5 Be sure that the b...

Page 36: ...edle plate press key few times to raise the presser foot then press key to lower the foot until the foot lands on the needle plate without the gap Adjust the presser bar height always by pressing key...

Page 37: ...se the foot 3 Press Offset key The Offset key changes to Adjust 4 Press 1 7 mm key The embroidery foot is lowered The clearance between the foot and the needle plate should be 1 7 mm to 1 9 mm 5 If th...

Page 38: ...he Adjust key so the adjusting screw D comes to the adjusting position Turn the adjusting screw in the direction of A if the length is more than 39 mm Turn the adjusting screw in the direction of B if...

Page 39: ...the Reverse stitch button The LCD shows the Factory Setting Mode Press Knee lifter key 2 Attach the knee lifter Press MEM1 key when the knee lifter is free 3 Push the knee lifter to the right as far a...

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