Janome 6260QC Service Manual
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Janome 6260QC Service Manual

Janome 6260QC Service Manual

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SERVICE MANUAL
MODEL 6260QC

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Summary of Contents for Janome 6260QC

  • Page 1 SERVICE MANUAL MODEL 6260QC...

  • Page 2: Table Of Contents

    Table Of Contents What To Do When ........................ 1-3 Service Access Face Cover ..........................4 Top Cover ..........................5 Belt Cover ..........................6 Base ............................7 Front Cover ..........................8 Rear Cover ..........................9 Mechanical Adjustment Needle Thread Tension ......................10 Presser Bar Height And Alignment ..................

  • Page 3: What To Do When

    What to Do When Condition Cause How to fix Reference 1. Skipped 1. Needle is not inserted Insert the needle properly. stitches properly. 2. Needle is bent or worn. Change the needle. 3. Incorrectly threaded. Rethread. 4. Needle or thread is Use the recommended inappropriate for fabric sewing needle and thread.
  • Page 4 Condition Cause How to fix Reference 3. Breaking 1. Initial sewing speed is too Start with medium speed. upper fast. thread 2. Thread path is incorrect. Use the proper thread path. 3. Needle is bent or dull. Replace with a new needle. 4.
  • Page 5 Condition Cause How to fix Reference 6. Noisy 1. Backlash between shuttle See mechanical adjustment p.18 operation hook gear and lower shaft “backlash (lower shaft gear)”. gear is too great. 2. Lower shaft gear is loose. Eliminate the looseness. 3. Inappropriate belt tension. See mechanical adjustment p.28 “motor belt tension”.

  • Page 6: Service Access

    Service access (1) Face cover Face cover Setscrew (A) Setscrew (B) Setscrew (C) To remove: 1. Remove the cap (A). 2. Remove the setscrews (B) and (C). 3. Lift up the top cover and unfasten the tab of the top cover from the face cover. Remove the face cover To attach: 4.

  • Page 7: Top Cover

    Service Access (2) Top cover Top cover Handle Setscrew (A) (2 pcs) To remove: 1. Remove the face cover (see page 4). 2. Remove the 2 setscrews (A) and remove the handle and top cover. To attach: 3. Follow the above procedure in reverse.

  • Page 8: Belt Cover

    Service Access (3) Belt cover Setscrew (A) Setscrew (B) Belt cover To remove: 1. Remove the face cover and top cover (see pages 4 and 5). 2. Remove the cap. 3. Remove the setscrews (A), (B) and remove the belt cover. To attach: 4.

  • Page 9: Base

    Service Access (4) Base Setscrew (B) Setscrew (C) Setscrew (A) Setscrew (D) Setscrew (E) Setscrew (F) Base To remove: 1. Remove the setscrews (A) to (F). Remove the base. To attach: 2. Follow the above procedure in reverse.

  • Page 10: Front Cover

    Service Access (5) Front cover Setscrew (B) Setscrew (A) Front cover Setscrew (E) Setscrew (D) Setscrew (F) To remove: 1. Remove the face cover, top cover and belt cover. (See pages 4-6.) 2. Remove the setscrews (A) to (E) and loosen the setscrew (F). To attach: 3.

  • Page 11: Rear Cover

    Service Access (6) Rear cover Rear cover Setscrew (D) Setscrew (A) Setscrew (B) Setscrew (C) To remove: 1. Remove the face cover, top cover and belt cover. (See pages 4-6.) 2. Remove the setscrews (A), (B), (C), (D) and remove the rear cover. To attach: 3.

  • Page 12: Mechanical Adjustment

    Mechanical Adjustment Needle Thread Tension The standard tension should be 75 to 90 grams when the tension dial is set at “A” (Auto), measured with a #50 white polyester thread being pulled at approximately 50 mm/sec. If the tension is outside the standard range, adjust it as follows. Adjustment procedure: 1.

  • Page 13: Presser Bar Height And Alignment

    Mechanical Adjustment Presser Bar Height and Alignment When the presser foot is raised, the clearance between the presser foot and the needle plate should be 6.0 mm. When the presser foot is lowered, the edge of the foot and the feed dog window on the needle plate should be parallel.

  • Page 14: Needle Drop Position

    Mechanical adjustment Needle Drop Position Set the stitch pattern to “ “. The standard needle drop position should be at the center of the needle plate hole. Select zigzag stitch “ “ and set the stitch width at “7.0”. The clearance between the needle and the edge of the needle hole on the needle plate should be at least 0.2 mm on either side.

  • Page 15: Stretch Stitch Feed Balance

    Mechanical adjustment Stretch Stitch Feed Balance If the stretch stitch patterns are deformed when sewing the patterns with the feed balancing dial is set at the standard position “ “, correct it as follows: Adjustment procedure: 1. Select the straight stretch stitch “ “.

  • Page 16: Feed Dog Height

    Mechanical adjustment Feed Dog Height The height of the deed dog should be 0.8-0.9 mm above the needle plate. Adjustment procedure: 1. Select the straight stitch “ “. 2. Set the foot pressure dial at “3” and lower the foot. 3.

  • Page 17: Needle Bar Height

    Mechanical adjustment Needle Bar Height When the tip of the hook meets the left side of the needle in ascending travel of the needle from its left and lowest position, the distance between the top of the needle eye and the tip of the hook should be in the range of 1.6 to 2.0 mm.

  • Page 18: Needle Timing To Hook

    Mechanical adjustment Needle Timing to Hook When the hook point meets with the right side of the needle, the height of needle point from its lowest and left most position should be 3.25-3.55 mm. Adjustment procedure: 1. Select the straight stitch “ “...

  • Page 19: Clearance Between Needle And Hook

    Mechanical adjustment Clearance between Needle and Hook The clearance between the needle and hook should be -0.10 to +0.05 mm. Adjustment procedure: 1. Select the zigzag stitch “ “ and set the stitch width at “7.0”. 2. Remove the needle plate (A) and bobbin holder (B). 3.

  • Page 20: Backlash Between Hook Gear And Lower Shaft Gear

    Mechanical adjustment Backlash between Hook Gear and Lower Shaft Gear The rotary play of the hook point should be 0.8 mm or less when it is in between the span of the feed dog teeth. And, the gears should turn smoothly. Adjustment procedure: 1.

  • Page 21: Replacement And Adjustment Of Needle Threader Plate

    Mechanical adjustment Replacement and Adjustment of Needle Threader Plate To replace: 1. Pry out the threader plate holder with a screwdriver while pushing up and holding the threader knob (See fig. 1.). 2. Align the groove on the new threader plate holder with the pin (B) on the threader shaft. Push the threader plate holder (C) up until it snaps in place.

  • Page 22: Self-Diagnostic Test

    Self-diagnostic Test Preparation: 1. Turn off the power switch. 2. Move the bobbin winder spindle to the left. 3. Raise the feed dog. 4. Set the speed control lever to the left. 5. Remove the presser foot and raise the presser foot lifter. 6.
  • Page 23 Step and items Procedure Correct Condition Defective Condition to check Turn on the power switch while Beep sounds when the Does not enter self-diagnostic simultaneously pressing the button is pressed. mode. 7-segment LED needle up/down button and the LED displays “8.8.” And it LED does not blink on or off.
  • Page 24 Step and items Procedure Correct Condition Defective Condition to check Press the needle up/down button, When the needle is at the LED display is different from that highest position, LED displays shown to the left. LED displays “07” for one second. Upper shaft “H.L”.

  • Page 25: Replacing A-Board And Fuse

    Replacing A-Board and Fuse To Replace the A-board: 1. Remove the rear cover (see page 9). 2. Remove the 3 setscrews (A) and unplug the connectors from the A-board. 3. Remove the 6 setscrews (B) and 2 setscrews (C) then remove the board supporter and function button frame.

  • Page 26: Connector Diagram

    Connector Diagram Machine socket connector (primary) Transformer connector (primary) DC motor connector Transformer connector (secondary) BH sensor connector Lamp connector F-board connector Slide volume Bobbin winder switch connector Upper shaft sensor connector Machine socket connector (secondary) Zigzag motor connector Feed motor connector Slide volume F-board connector Bobbin winder switch connector...

  • Page 27: Replacing Machine Socket

    Replacing Machine Socket To remove: 1. Remove the front cover (see page 8). 2. Remove the board supporter (see page 23) and unplug the machine socket connectors (both primary and secondary). 3. Remove the 2 setscrews (A) and remove the machine socket. To attach: 4.

  • Page 28: Replacing Transformer

    Replacing Transformer o remove: 1. Remove the front cover (see page 8). 2. Remove the board suppoerter (see page 23) and unplug the transformer connectors (both primary and secondary). 3. Remove the 2 setscrews (A) and remove the transformer. To attach: 4.

  • Page 29: Replacement And Adjustment Of Upper Shaft Sensor

    Replacement and Adjustment of Upper Shaft Sensor During zigzag sewing, lateral movement of the needle should take place 7.4 to 9.8 mm above the needle plate. Adjustment procedure: 1. Remove the top cover (see page 15). 2. Select the zigzag stitch “ “...

  • Page 30: Replacing Dc Motor

    Replacing DC Motor To remove: 1. Remove the front cover (See page 8.). 2. Remove the board supporter (see page 23) and unplug the DC motor connector. 3. Remove the 2 setscrews (A) and replace the DC motor. To attach: 4.

  • Page 31: Replacing Slide Volume And F-Board

    Replacing Slide Volume and F-Board Replacing the slide volume control To remove: 1. Remove the front cover (see page 8). Unplug the slide volume connector. 2. Remove the 6 CS rings and replace the slide volume. Replacing the F-board To remove: 1.

  • Page 32: Replacing Zigzag Motor

    Replacing Zigzag Motor To remove: 1. Remove the front cover (see page 8). 2. Unplug the zigzag motor connector. 3. Remove the 2 setscrews (A) and replace zigzag motor. To attach: 4. Follow the above procedure in reverse. Note: After replacement, check the needle drop position and adjust it if necessary (see page 13). Setscrew (A) Zigzag motor Setscrew (A)

  • Page 33: Replacing Feed Motor

    Replacing Feed Motor To remove: 1. Remove the front cover (see page 8). 2. Unplug the feed motor connector. 3. Remove the 2 setscrews (A) and replace feed motor. To attach: 4. Follow the above procedure in reverse. Setscrew (A) Feed motor Setscrew (A)

  • Page 34: Adjusting Bobbin Winder Switch

    Adjusting Bobbin Winder Switch The LED display shows “ ” when the bobbin winder spindle is set to the left and “ “ when the bobbin winder spindle is set to the right. Adjustment procedure: 1. Remove the top cover (see page 8). 2.

  • Page 35: Adjusting Buttonhole Lever Position

    Adjusting Buttonhole Lever Position To adjust the buttonhole lever guide: 1. Enter the buttonhole sensor adjusting mode. (See below. The LED should display “H” or “L”.) 2. Remove the face cover (see page 4) and loosen setscrew (A). 3. Move the buttonhole lever guide so the LED displays “L” when the buttonhole lever is lowered. Tighten setscrew (A).

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