Janome MC 11000 Service Manual
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Janome MC 11000 Service Manual

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SERVICE MANUAL
MC11000
www.promelectroavtomat.ru

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Summary of Contents for Janome MC 11000

  • Page 1 SERVICE MANUAL MC11000 www.promelectroavtomat.ru...

  • Page 2: Table Of Contents

    MC 11000 CONTENTS Changing External Parts Face and top covers ............................. 1 Belt cover ................................2 Bed cover ................................3 Base ..................................4 Front cover ................................5 Rear cover ................................6 Thread tension unit ............................... 7 Thread cutter unit ..............................8 Needle threader motor .............................9-10...

  • Page 3: Changing External Parts

    Changing External Parts (1) Replacing the face cover To remove: 1 Remove the 2 screws (A) and remove the face cover (1). To attach: 2 Follow the above procedure in reverse. Replacing the top cover To remove: 1. Open the face cover. 2.

  • Page 4: Belt Cover

    MC 11000 Changing External Parts (2) Replacing the belt cover To remove: 1. Loosen the screw (A) . 2. Remove the 2 caps (1) and their screws (B) and (C). 3. While pushig down the stopper (2) under the belt cover remove the belt cover.

  • Page 5: Bed Cover

    Changing External Parts (3) Replacing the bed cover To remove: 1. Remove the extension table. 2. Remove the 2 screws (A) and remove the bed cover. To attach: 3. Follow the above procedure in reverse. www.promelectroavtomat.ru...

  • Page 6: Base

    MC 11000 Changing External Parts (4) Replacing the base To remove: 1. Remove the extension table. 2. Remove the belt cover. 3. Disconnect the connector (1) from printed circuit board S1 (2). 4. Remove the screws (A) and (B) and remove the base.

  • Page 7: Front Cover

    Changing External Parts (5) Front cover To remove: 1. Open the face cover and remove the top cover, belt cover and extension table. 2. Remove the screw (A) and remove the rear arm thread guide (1). 3. Loosen the screw (B). 4.

  • Page 8: Rear Cover

    MC 11000 Changing External Parts (6) Rear cover To remove: 1. Remove the top cover, belt cover and base. 2. Loosen the screws (A), (B) and (C) and remove the screw (D) 3. Lower the presser foot and remove the rear cover.

  • Page 9: Thread Tension Unit

    Changing Thread Tension Unit To remove: 1. Remove the front cover. 2. Lower the presser foot. 3. Remove the screws (A) and (B). 4. Pull the connector out from the ìUî board and remove the thread tension unit. To attach: 3.

  • Page 10: Thread Cutter Unit

    MC 11000 Replacing the Thread Cutter unit 1. Remove the needle plate and bed cover. 2. Loosen the screw (A) and remove the thread cutter cover (1) 3. Remove the 2 screws (B) and remove the thread cutter unit. 4. Insert the pins (1) and (2) into the thread cutter hole and attach the thread cutter unit with the screw (B).
  • Page 11 Replacing Needle Threader Motor (1) To remove: 1. Remove the face cover and the top cover. 2. Loosen the screw (A). 3. Disconnect the bobbin winding motor and the needle threader sensor from printed circuit board U. Note: Remove the cords from the cord guide (1). 4.
  • Page 12 MC 11000 Replacing Needle Threader Motor (2) To attach: 5. Insert the projection (1) of the needle bar supporter into the corner part of the moval body (2). 6. Attach the motor (4). 7. Insert each cord into the cord guide (3) and connect to printed circuit board U.

  • Page 13: Needle Threader Motor

    Wiring Diagaram Bobbin winder (black) Printed circuit board L2 (gray) Printed circuit board R (white) Printed circuit board U (Since it is easy to break, remove (black) Printed circuit board L2 (white) this part with extreme care.) Printed circuit board F1 (red) Printed circuit board A Printed circuit board F2 (black) LCD detection switch (top...

  • Page 14: Replacing Printed Circuit Board A

    MC 11000 Replacing Printed Circuit Board A To remove: 1. Remove the front cover. 2. Disconnect each connector from printed circuit board A. 3. Remove the 8 screws (A) and remove printed circuit board A with the card guide (1).

  • Page 15: Printed Circuit Boards F1, F2 And Slide Volume

    Replacing Printed Circuit Boards F1, F2 and Slide Volume Printed circuit board F1 To remove: 1. Remove the front cover. 2. Pull out the connector from printed circuit board 3. Remove the 2 screws (A) and remove printed cir- cuit board F1 (1). To attach: 4.

  • Page 16: Printed Circuit Board B

    MC 11000 Replacing Printed Circuit Board B To remove: 1. Remove the belt cover. Turn the machine to the back. 2. Remove the base (1). 3. Remove the 2 screws (A) and remove printed circuit board B case (2) and circuit board B (3).

  • Page 17: Switching Power Supply

    Replacing Switching Power Supply To remove: 1. Remove the top cover, belt cover, base, and rear cover. 2. Remove the screws (A) and (B), and remove the switching power supply (1). 3. Disconnect harness (2) from the switching power supply. To attach: 4.

  • Page 18: Dc Motor And Adjusting Motor Belt Tension

    MC 11000 Replacing DC Motor and Adjusting Motor Belt Tension Replacing DC Motor To remove: 1. Remove the belt cover. 2. Remove the motor belt. 3. Disconnect the motor connector from printed circuit board A. 4. Remove the 2 screws (A) and replace the motor.

  • Page 19: Adjusting Needle Drop Position

    Adjusting Needle Drop Position When the straight stitch is selected on the touch panel, the needle should be positioned in the center of the needle plate hole. When the zigzag stitch is selected with the zigzag width set to the maximum (7.0), the clearance between the side of the needle and the edge of the hole of the needle plate at the left and right needle position should be 0.2 mm or more.

  • Page 20: Hook Timing

    MC 11000 Adjusting Hook Timing When stitch No. 2 is selected, the amount the needle bar travel from its lowest position to the position where the tip of the rotary hook exactly meets the right side of the needle should be 3.25 to 3.55 mm.

  • Page 21: Needle Bar Height

    Adjusting Needle Bar Height The standard distance between the upper edge of the needle eye and the tip of the rotary hook should be in the range of 1.6 - 2.0 mm when the rotary hook meets the right side of the needle as the needle travels up from its lowest position.

  • Page 22: Clearance Between Needle And Hook

    MC 11000 Adjusting Clearance between Needle and Hook The clearance between the needle and rotary hook should be -0.10 to + 0.05 mm. 1. Remove the extension plate, needle, needle plate, bob- bin holder, and bed cover, and attach the Test pin (1).

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

    Adjusting Backlash between Hook Drive Gear and Lower Shaft Gear The rotational play of the hook should be 0.8 mm or less when the tip of the rotary hook is within the width of the feed dog as shown below. Adjust the backlash after adjusting the clearance between the needle and the rotary hook.

  • Page 24: Presser Foot Position And Height

    MC 11000 Adjusting Presser Foot Position and Height 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 25: Feed Dog Height

    Adjusting Feed Dog Height When the pressure adjusting dial is set at “3” and the presser foot is lowered, the highest position of the feed dog should be 0.80 to 0.90 mm from the surface of the needle plate. To adjust feed dog height 1.

  • Page 26: Height Of Embroidery Foot P

    MC 11000 Adjusting Height of Embroidery Foot P The space between the needle plate and the bottom surface of the foot (P) should be 0.7 to 1.5 mm when the needle bar is at its lowest position. 1. Set the pressure dial at 2 and remove the top cover.

  • Page 27: Shield Plate Position

    Adjusting Shield Plate Position When the machine is set for zigzag stitching, the needle should start to swing 8.3 to 8.7 mm above the surface of the needle plate. Main Slave PH Sensor 1. Remove the belt cover and base. 2.

  • Page 28: Tension Release Mechanism

    MC 11000 Adjusting Tension Release Mechanism When the presser foot lifter is raised, the tension release mechanism should work correctly. If not, adjust as follows. Adjusting tension release claw 1. Remove the top cover unit. 2. Lower the presser foot and turn the thread tension dial (1) until the convex part (2) of the tension dial is aligned with the tension release claw (3).

  • Page 29: Needle Thread Tension

    Adjusting Needle Thread Tension The standard upper thread tension should be 59 to 67 grams when the machine is set for stitch No.1 and the tension dial is set at AUTO, measured with a #50 polyester thread being pulled at approximately 110 mm/s in the direction of the arrow. 1.

  • Page 30: Replacing And Adjusting Threader Plate

    MC 11000 Replacing and Adjusting Threader Plate If the hook on the threader plate is damaged, replace it as follows. To replace: 1. Remove the foot holder. 2. Turn the power switch on. Raise the needle by press- ing the needle up/down button.

  • Page 31: Adjusting Needle Threader Switch

    Adjusting Needle Threader Switch Adjust the upper switch position as follows if the instructional display will not disappear. 1. Remove the 2 screws (A) and remove the motor cover (1). 2. Loosen the screw (B) and adjust the position of the switch (2) by moving it up or down so that the needle threader stops with a 3 mm gap (3) between the slider (4) and the top end of the guide slot.

  • Page 32: Ttp Adjusting Mode

    MC 11000 TTP Adjusting Mode If a different stitch appears on the touch panel from the one pressed when selecting a desired stitch, follow the instructions below. á@ To adjust touch panel: 1. While pressing the Needle Up/Down button (1),turn the power switch on.

  • Page 33: Adjusting Stretch Stitch Balance

    Adjusting Stretch Stitch Balance When a stretch stitch is sewn with the feed balancing dial (1) set at the standard setting mark ì2î, the length should be as indicated with the “ “ mark in the following figure. If not (if the forward feeding and backward feeding are out of balance), make an adjustment as follows: Main Slave...

  • Page 34: Presser Foot Lifter Sensor

    MC 11000 Adjusting Presser Foot Lifter Sensor To adjust the presser foot sensor 1. Set up the machine in Adjust Mode. Turn the power switch on while pressing the Start/Stop button and the reverse button at the same time. (Keep pressing both buttons until LCD screen shows the adjusting window.)

  • Page 35: Buttonhole Lever

    Adjusting Buttonhole Lever To adjust buttonhole lever: 1. Start up the machine in Adjust Mode. Turn the power switch on while pressing the Start/Stop button and the reverse button at the same time. (Keep pressing both buttons until the LCD screen shows the adjusting window.) 2.

  • Page 36: Presser Foot Sensor

    MC 11000 Adjusting Presser Foot Sensor To adjust foot sensor position 1. Set up the machine in Adjust Mode. Turn the power witch on while pressing the Start/Stop button and the reverse button at the same time. (Keep pressing both buttons until LCD screen shows the adjusting window.)

  • Page 37: Remaining Bobbin Thread Sensor

    Adjusting Remaining Bobbin Thread Sensor To adjust buttonhole lever: 1. Set up the machine in Adjust Mode. Turn the power switch on while pressing the Start/Stop button and the reverse button at the same time. (Keep pressing both buttons until LCD screen shows adjusting window.) 2.

  • Page 38: Thread Cutter Solenoid

    MC 11000 Adjusting Thread Cutter Solenoid The space between the plunger and the upper surface of the yoke should be 5 mm when the plunger is operated. 1. Remove the belt cover and base. 2. Loosen the 2 screws (A) and move the set plate...

  • Page 39: Upper Shaft Clutch Solenoid

    Adjusting Upper Shaft Clutch Solenoid The space between the plunger and the upper surface of the yoke should be 5 mm. To adjust: 1. Remove the belt cover. 5 mm 2. Loosen the 2 screws (A) and move the yoke (1) up or down to make a space of 5 mm between the snap ring (2) of the plunger and the upper surface of the yoke.

  • Page 40: Thread Cutter Switch

    MC 11000 Adjusting Thread Cutter Switch 1. Start the machine in Adjust Mode. Turn the power switch on while pressing the Start/Stop button and the reverse button at the same time. (Keep pressing both buttons until LCD screen shows adjusting window.)

  • Page 41: Bobbin Winder Stopper

    Adjusting Bobbin Winder Stopper The amount of thread wound on the bobbin should be between 16.5 and 19.5 mm in diameter. 1. Loosen the setscrew (1). Turn the bobbin winder stop- per (2) to adjust the amount of allowable thread. If too much thread is allowed, turn the stopper in the 16.5 -19.5 mm direction A.

  • Page 42: Threader Drawing Lever

    MC 11000 Adjusting Thread Drawing Lever The standard height of the thread drawing lever from the surface of the bobbin holder should be in the range of 5.45 - 5.75 mm. 1. Remove the needle plate. 2. Loosen the hexagonal bolt (1) and adjust the distance of the thread drawing lever (2) from the bobbin holder (3) to be between 5.45 mm and 5.75 mm by moving...

  • Page 43: And Y Sensors

    Adjusting X and Y Sensors 1. Turn the power switch on to set to the initial setting. 2. Turn the power switch off and remove the base unit. 3. Remove the Y carriage cover (1), X carriage cover (2), X carriage cap (3) and embroidery base covers (4) and (5).

  • Page 44: Sewing Start Position

    MC 11000 Adjusting the Sewing Start Position Follow this method to adjust the sewing start position without having to remove the base. Note: If there is significant variance in the start position, see page 41. 1. Remove the Y carriage cover (1).

  • Page 45: Setting Position Of Thread Take Up Lever

    Setting Position of Thread Take Up lever (A)- short Insert the needle bar crank into the take up crank (C) so that the flat part of the needle bar crank (D) faces the long setscrew (B). Tighten the setscrew (B), then the short setscrew (A).

  • Page 46: To Adjust

    MC 11000 To Adjust Upper Shaft Declutch Device To correct the position of the upper shaft declutch de- vice (E): 12.3 degrees (B) VIEW A When the flat part of the upper shaft (C) is leveled, the take up crank (D) should be at a 12.3 degree angle (B).

  • Page 47: Setting Position Of Parts On Lower Shaft

    Setting Position of Parts on Lower Shaft The setting positions of the parts on the lower shaft are as shown below. The setting angle of the parts (A), (B) and (C) should be the same as (D). Spring pin (D) Feed cam (C) Cam (B) Belt wheel...

  • Page 48: Setting Position Of Upper And Lower Shafts

    MC 11000 Setting Position of the Upper and Lower Shafts When the setting mark (A) on the cam (B) is exactly at the top, the spring pin (E) should be vertical and the setting mark (C) on the belt wheel (D) should be in the position as shown.

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