Janome SKYLINE S6 Service Manual
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Janome SKYLINE S6 Service Manual

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First Edition: 12 December 2018
SERVICE MANUAL
MODEL: SKYLINE S6

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Summary of Contents for Janome SKYLINE S6

  • Page 1 First Edition: 12 December 2018 SERVICE MANUAL MODEL: SKYLINE S6...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Replacing external parts Face cover ................................. 1 Belt cover ................................1 Top cover ................................2 Machine base ..............................3 Base cover ................................. 3 Bed cover ................................3 Free arm cover ..............................4 Front cover ................................. 5 Rear cover ................................6 Replacing mechanical parts Needle threader hook position ..........................

  • Page 3: Replacing External Parts

    Replacing external parts Setscrew A Face cover To remove: 1. Remove the setscrews A. Remove the face cover. To attach: Follow the above procedure in reverse. Belt cover To remove: 1. Remove the cap and setscrew B. Setscrew B 2. Remove the setscrew C. Setscrew C 3.

  • Page 4: Top Cover

    Replacing external parts Setscrew A Top cover To remove: 1. Raise the carrying handle and remove the setscrew A. Face cover Top Cover Carrying handle Bobbin winder spindle 2. Open the top cover. Pull out the flange plate from the bobbin winder spindle.

  • Page 5: Machine Base

    Replacing external parts Machine base To remove: 1. Remove the setscrews A. 2. Remove the machine base. Setscrew A To attach: Follow the above procedure in reverse. Machine base Base cover To remove: 1. Remove the setscrews B. 2. Remove the base cover. Setscrew B To attach: Follow the above procedure in reverse.

  • Page 6: Free Arm Cover

    Replacing external parts Free arm cover To remove: Needle plate 1. Remove the machine base and base cover (refer to page 3). Remove the presser foot. Push down the needle plate release lever to remove the needle plate. Remove the bed cover (refer to page 3).

  • Page 7: Front Cover

    Replacing external parts Setscrew A Setscrew A Front cover To remove: 1. Remove the top cover, belt cover, base cover, machine base and free arm cover (refer to pages 1 to 4). 2. Loosen the setscrews A (underside of the machine). 3.

  • Page 8: Rear Cover

    Replacing external parts Setscrew A Rear cover To remove: 1. Lower the presser foot. Remove the belt cover, top cover and base cover (refer to pages 1 to 3). 2. Loosen the setscrew A. Setscrew B 3. Loosen the setscrew B. 4.

  • Page 9: Replacing Mechanical Parts

    Replacing mechanical parts Needle threader hook position If the hook of the threader plate is damaged, change or adjust the part as follows: 1. Push down the threader lever and hold it just before Stopper the threader hook enters the needle eye. 2.

  • Page 10: Replacing Electronic Components

    Replacing electronic components Setscrew Printed circuit board A NOTE: Do not disconnect connectors by pulling on cord. To disconnect the connectors, grasp the connector, not the cord. To remove: 1. Remove the front cover (refer to page 5). 2. Disconnect the connectors from the printed circuit board A.

  • Page 11: Printed Circuit Board F

    Replacing electronic components NOTE: Do not disconnect connectors by pulling on cord. To disconnect the connectors, grasp the connector, not the cord. CS ring Printed circuit board F To remove: 1. Remove the front cover (refer to page 5). 2. Disconnect the printed circuit board F connector from the printed circuit board A (refer to page 8).

  • Page 12: Switching Power Supply Unit

    Replacing electronic components Switching power supply unit Switching power supply connector To remove: 1. Remove the belt cover, the top cover and the front cover (refer to pages 1, 2 and 5). 2. Disconnect the switching power supply connector from the switching power supply unit. Setscrew 3.

  • Page 13: Dc Motor

    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 Motor belt cover (refer to pages 1, 2 and 5). 2.

  • Page 14: Thread Tension Unit

    Replacing electronic components Thread tension unit NOTE: Do not disconnect connectors by pulling on cord. To disconnect the connectors, grasp the connector, not the cord. Setscrew A To remove: 1. Remove the belt cover and the top cover (refer to page 1 and 2).

  • Page 15: Mechanical Adjustment

    Mechanical adjustment Feed dog height When the foot pressure is set at maximum (AUTO+4) and the presser foot A is lowered, the highest position of the feed dog should be 0.80 to 0.90 mm from the surface of the needle plate. 1.

  • Page 16: Needle Drop Position

    Mechanical adjustment Needle drop position When the straight stitch is selected, the needle should be positioned in the center of the needle plate hole. When the needle drop position is set at "0.0" and "9.0", the clearance between the side of the needle and the needle hole should be 0.2 mm or more.

  • Page 17: Presser Bar Height

    Mechanical adjustment Presser bar height The clearance between the presser foot and the surface of the needle plate should be 6 mm when the presser foot is raised. The presser foot (zigzag foot A) should be parallel to the slot of the feed dog teeth when attached. To adjust: 1.

  • Page 18: Hook Timing

    Mechanical adjustment Hook timing The amount of ascending travel of the needle bar from its lowest position to the position (Needle drop position 0.0) where the tip of the rotary hook exactly meets the right side of the needle should be 3.70 to 4.00 mm. Hook To adjust: Tip of hook...

  • Page 19: Needle Bar Height

    Mechanical adjustment Needle bar height The distance between the upper edge of the needle eye and the hook race should be in the range of 1.6 to 2.0 mm when the tip of the hook meets right side of the needle in the needle drop position "0.0" as the needle ascends from its lowest position.

  • Page 20: Clearance Between Needle And Tip Of The Rotary Hook

    Mechanical adjustment Clearance between needle and tip of the rotary hook (method 1) The clearance between the needle and the point of hook should be -0.10 to +0.05 mm. 1. Remove the top cover (refer to page 2). 2. Remove the presser foot, the needle plate and the bobbin holder.
  • Page 21 Mechanical adjustment Clearance between needle and tip of the rotary hook (method 2) The clearance between the needle and the point of hook should be -0.10 to +0.05 mm. Setscrew C 1. Remove the bed cover (refer to page 3). Setscrew A 2.

  • Page 22: Presser Bar Lifter Switch Position Adjustment

    Mechanical adjustment Presser bar lifter switch position adjustment To check: Presser foot symbol 1. While pressing the needle up/down and lock stitch buttons, turn the power switch on. The LCD displays "----". 2. Press "5" key to enter the sensor test mode. 3.

  • Page 23: Backlash Between Hook Drive Gear And Lower Shaft Gear

    Mechanical adjustment Backlash between hook drive gear and lower shaft gear The rotary play of the hook should be 0.8 mm or less when the tip of rotary hook is within the width of feed dog. Width of feed dog 1.

  • Page 24: Upper Shaft Shield Plate Position

    Mechanical adjustment Upper shaft shield plate position When the machine is set for zigzag stitch, the needle should start to swing 7.2 to 8.2 mm above the surface of the needle plate. To check: 1. Attach the needle #14. 2. While pressing the needle up/down and aut-lock stitch Needle #14 buttons, turn the power switch on.

  • Page 25: Upper Thread Tension

    Mechanical adjustment Upper thread tension The standard upper thread tension should be 75 to 90 grams when pulling the thread (while polyester thread size 50) at the speed of 110 mm/sec with the tension at "AUTO" (Be sure the presser foot is lowered). 1.

  • Page 26: Buttonhole Lever Adjustment

    Mechanical adjustment Buttonhole lever adjustment To prepare: 1. While pressing the needle up/down and aut-lock stitch buttons, turn the power switch on. The LCD display “----”. Press “5” key to enter the sensor test mode. 2. Attach the automatic buttonhole foot R. Place a piece of paper between the presser foot and the needle plate for easier adjustment.

  • Page 27: Thread Cutter

    Mechanical adjustment Thread cutter The distance between the end of thread cutter plate slit and the end of moving cutter should be in the range of 0.7 to 1.5 mm. To check: 1. Remove the bed cover and free arm cover (refer to pages 3 to 4).

  • Page 28: Solenoid Position Adjustment

    Mechanical adjustment Solenoid position adjustment When the tension disk is closed, the clearance between the plunger and the end of yoke should be 2.0 mm. TOP VIEW [To check] 1. Remove the top cover (Refer to page 2). 2. While pressing the needle up/down and aut-lock stitch buttons, turn the power switch on.

  • Page 29: Upper Feed Dog

    Mechanical adjustment Upper feed dog (1) The clearance between the connecting link and upper feed lower shaft should be 2.5 mm when the upper feed adjusting dial is set to "0". To check: 1. Set the upper feed adjusting dial at "0". Remove the belt cover and base cover (Refer to page 1 to 2).
  • Page 30 Mechanical adjustment Upper feed dog (2) The clearance between the dual feed foot and upper feed dog should be 4 mm when the stitch length is set at "0". * Check the upper feed dog (1) (refer to page 25) before this adjustment. To check: 1.
  • Page 31 Mechanical adjustment Upper feed dog (3) The dual feed foot sits on the needle plate firmly with no gap when the needle tip comes 1 mm or less above the needle plate. To check: 1. Set the upper feed adjusting dial at "0". Attach the dual feed foot.

  • Page 32: Stretch Stitch Feed Balance

    Mechanical adjustment Stretch stitch feed balance Adjust the stretch stitch balance dial at the setting mark. The measurement of five of test patterns should be in the range of 33 to 39 mm as shown. To adjust: 1. While pressing the needle up/down and aut-lock stitch buttons, turn the power switch on.

  • Page 33: Needle Plate Switch

    Mechanical adjustment Needle plate switch (method 1) Fig. 1 To check and adjustment: Needle plate sensor switch 1. Prepare the needle plate and the needle plate for straight stitch. 2. Remove the bed cover and free arm cover. 3. Insert the needle plate base plate under the fixed cutter spacer and the slide plate positioning plate.
  • Page 34 Mechanical adjustment Needle plate switch (method 1) To check: 1. While pressing the needle up/down and aut-lock stitch buttons, turn the power switch on. The LCD display “----”. Press “5” key to enter the sensor test mode. 2. Be sure that S symbol appears and blinks when the S symbol blinks needle plate is attached.

  • Page 35: Knee Lifter Posotion

    Mechanical adjustment Knee lifter posotion To adjust: 1. Remove the top cover. 2. Open the face cover. 3. Remove the zigzag foot A. 4. Insert the knee lifter to the machine with the handle side up as sh. 5. Turn the knee lifter to the left to raise the presser foot. Be sure that there are clearances (clearance (upper) and clearance (lower)) between the knee lifter lever 1 and presser bar lifter.

  • Page 36: Diagnosis Test

    Diagnosis test NOTE: 1. Be sure to disconnect the machine from the power supply when replacing parts. 2. The language on the LCD is English only. Preparation 1. Shift the bobbin winder spindle to the right. 2. Turn the drop feed lever to the right (away from you) to raise the feed dog. 3.
  • Page 37 Diagnosis test STEP AND PROCEDURE CORRECT CONDITION DEFECTIVE CONDITION ITEMS T CHECK Turn on the power switch while Sewing lamp and LCD backlight lit. “1” button is not responding. LCD displays “----”. Sewing lamp does not lit. FUNCTION OF simultaneously pressing the LCD backlight does not lit.
  • Page 38 Diagnosis test STEP AND PROCEDURE CORRECT CONDITION DEFECTIVE CONDITION ITEMS TO CHECK Buzzer does not sound. LCD displays “05” and presser foot Move the presser foot lifter up and Presser foot symbol does symbol. down. PRESSER not change. When the presser foot lifter is raised, FOOT If the result is correct condition, LIFTER...
  • Page 39 Diagnosis test STEP AND PROCEDURE ITEMS TO CORRECT CONDITION DEFECTIVE CONDITION CHECK Attach the foot control to the LCD displays “08” and “FC”. The foot control symbol machine. does not appear. FOOT Depress the foot control as far as Buzzer does not sound. CONTROL it goes, then release it.
  • Page 40 Diagnosis test STEP AND PROCEDURE DEFECTIVE CONDITION CORRECT CONDITION ITEMS TO CHECK Lower the presser foot. LCD displays “12”, “SO” and “–off”. The Thread tension disk THREAD Press the needle up/down button. does not open. Press the needle up/down button to TENSION If the result is correct condition, switch the solenoid on or off.
  • Page 41 Diagnosis test STEP AND PROCEDURE DEFECTIVE CONDITION CORRECT CONDITION ITEMS TO CHECK LCD displays “15”. Buzzer does not sound. Attach the needle plate. NEEDLE Attach the needle plate for straight When the needle plate is attached to PLATE –REMEDY– stitch. the machine, LCD displays “PSZ”.

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