Janome MC230E Service Manual
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Janome MC230E Service Manual

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MC230E

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Summary of Contents for Janome MC230E

  • Page 1 MC230E...
  • Page 2 MC200E Mechanical Troubleshooting Problem Cause Remedy Reference Skipped stitches 1. Needle is bent or worn 1. Replace the needle. ----------- 2. Machine is not threaded correctly. 2. Rethread the needle and bobbin threads. ----------- 3. Fabric is loose in the embroidery hoop. 3.
  • Page 3 MC200E Electronic Troubleshooting Problem Cause Remedy Reference Sewing light and LCD screen do not turn on. Power supply circuit is faulty. 1. Replace the switching power supply. Page 28 2. Replace the A-board. Page 16 Sewing light turns on but the LCD screen does LCD module is faulty.

  • Page 4: Table Of Contents

    GENERAL TROUBLESHOOTING PROCEDURE Replacing External Parts (1) Face Cover ............. 1 Replacing External Parts (2) Bed Cover ............... 2 Replacing External Parts (3) Front Cover ............. 3 Replacing External Parts (4) Rear Cover ............. 4 Adjusting the Needle Drop Position ..............5 Adjusting the Hook Timing ..................

  • Page 5: Replacing External Parts (1) Face Cover

    MC200E Replacing External Parts (1) Face Cover Setscrew Replacing the face cover To remove: 1. Remove the setscrew and remove the face cover. To attach: 2. Follow the above procedure in reverse. Face cover...

  • Page 6: Replacing External Parts (2) Bed Cover

    MC200E Replacing External Parts (2) Bed Cover Setscrew (A) Setscrews (A) Replacing the bed cover To remove: 1. Turn the power switch on to move the carriage to the stored position, then turn the power awitch off. 2. Remove the setscrew (B) and remove the needle plate.

  • Page 7: Replacing External Parts (3) Front Cover

    MC200E Replacing External Parts (3) Front Cover Replacing the Front cover To remove: 1. Turn the power switch on and select the embroi dery pattern #1 to move the carriage to the Setscrew (A) starting position, then turn the power switch off. Remove the face cover and bed cover.

  • Page 8: Replacing External Parts (4) Rear Cover

    MC200E Replacing External Parts (4) Rear Cover Replacing the Rear Cover To remove: 1. Remove the face cover, bed cover. 2. Remove the setscrew (A). 3. Remove the 2 setscrews (B). Setscrew (A) Rear cover 4. Remove the 2 setscrews (C). 5.

  • Page 9: Adjusting The Needle Drop Position

    MC200E Adjusting the Needle Drop Position The needle should be positiioned at the center of the needle plate hole. Setscrews (A) 1. Remove the face cover. 2. Lower the needle to the lowest position by turning the hand wheel. 3. Loosen the 2 setscrews (A). Needle bar supporter 4.

  • Page 10: Adjusting The Hook Timing

    MC200E Adjusting the Hook Timing The hook timing is an amount of ascending travel of the needle bar from its lowest position to where the tip of the rotary hook meets the right side of the needle that should be 1.65 to 1.95 mm.

  • Page 11: Adjusting The Needle Bar Height

    MC200E Adjusting the Needle Bar Height The distance beteen the top of the needle eye and the upper surface of the hook race should be 3.2 to 3.6 mm when the tip of the rotary hook meets the right side of the needle in the ascending travel from the lowest position.

  • Page 12: Adjusting The Clearance Between Needle And Hook

    MC200E Adjusting the Clearance between Needle and Hook The clearance between the needle and the rotary hook should be -0.10 to +0.05 mm. Setscrew (A) Setscrew (C) 1. Remove the needle plate, bottom plate and bed cover. 2. Remove the presser foot and bobbin holder. Replace the needle (#11) with the test pin.

  • Page 13: Adjusting The Backlash Between Hook Drive Gear And Lower Shaft Gear

    MC200E Adjusting the Backlash between the Rotary Hook Gear and Lower Shaft Gear The rotary play of the hook should be 0. 8 mm or less. Lower shaft bushing 1. Remove the bottom plate and bed cover. 2. Remove the needle, presser foot, needle plate and bobbin holder.

  • Page 14: Adjusting The Needle Stop Position

    MC200E Adjusting the Needle Stop Position The needle should stop 13.8 mm above the needle plate surface when machine stops. 1. Remove the face cove, bed cover and front cover (do not disconnect any connector). 2. Turn the power switch on and press the start/stop button twice.

  • Page 15: Adjusting The Needle Thread Tension

    MC200E Adjusting the Needle Thread Tension The needle thread tension should be 46 to 54 grams when the tension dial is set at “4” and measured with a #50 polyester thread being pilled in the direction of the arrow at approximately 110 mm/sec.

  • Page 16: Adjusting The Tension Release Mechanism

    MC200E Adjusting the Tension Release Mechanism When the presser foot lifter is raised the tension disks should open to release the needle thread tension. Tension release rod Setscrew 1. Remove theface cover, bed cover and front cover (do not need to disconnect the connectors). 2.

  • Page 17: Repalceing The Thread Tension Unit

    MC200E Replacing the Thread Tension Unit To remove : 1. Remove theface cover, bed cover and front cover. Thread tension unit 2. Remove the setscrews (A) and (B). Remove the thread tension unit. To attach: 3. Follow the above procedure in reverse. NOTE: After replacement, adjust the tension release mechanism and tension solenoid (refer to the next...

  • Page 18: Replacing And Adjusting The Needle Threader

    MC200E Replacing and Adjusting the Needle Threader If the hook of the needle threader is damaged, replace the threader plate as follows. To replace: 1. Pry out the threader plate with a screwdriver while pushing down and holding the threader knob.

  • Page 19: Adjusting The Height Of The Embroidery Foot

    MC200E Adjusting the Height of the Emboidery Foot Space between the needle plate and bottom of the embroidery foot should be 1.0 to 1.3 mm when the presser bar is at the lowest position. Presser foot lifter 1. Remove theface cover, bed cover and front cover. 2.

  • Page 20: Replacing Printed The Printed Circuit Board A

    MC200E Replacing the Printed Circuit Board A To remove: 1. Remove the face cover, bed cover and front cover. 2. Disconnect all the connectors from the printed circuit board A. 3. Remove the 4 setscrews and remove the printed circuit board A. To attach: 4.

  • Page 21: Replacing The Lcd Module

    MC200E Replacing the LCD Module To remove: 1. Remove the face cover, bed cover and front Setscrew Setscrew cover. 2. Remove the printed circuit board A. 3. Remove the 4 setscrews and remove the LCD module. To attach: 4. Follow the above procedure in reverse. NOTE: Refer to the previous page for connector diagram.

  • Page 22: Replacing The Printed Circuit Board F

    MC200E Replacing the Printed Circuit Board F To remove: 1. Remove the face cover, bed cover and front Setscrew Printed circuit board F cover. 2. Disconnect the connectors from the printed circuit board A. 3. Remove the 2 setscrews and remove the printed circuit board F.

  • Page 23: Adjusting The Tension Solenoid

    MC200E Adjusting the Tension Solenoid 1. Remove the face cover, bed cover and front cover. Setscrews 2. Lower the presser foot lifter. Loosen the 2 setscrews. 3. Slide the solenoid to make a 1.6 mm gap be tween the solenoid and snap ring. 4.

  • Page 24: Replacing The Dc Motor And Adjusting The Motor Belt Tension

    MC200E Replacing the DC Motor and Adjusting the Motor Belt Tension To remove: 1. Remove the face cover, bed cover, front cover and rear cover. 2. Remove the motor belt. 3. Remove the 2 setscrews and remove the DC motor. To attach: 4.

  • Page 25: Replaching The Carriage Unit

    MC200E Replacing the Carriage Unit To remove: 1. Remove the face cover, bed cover and front Setscrew (A) cover (remove only the X-motor and Y-motor connectors). 2. Remove the setscrew (A) and remove the carrage cover. 3. Remove the 4 setscrews (B) and remove the carriage unit.

  • Page 26: Adjusting The Y-Sensor

    MC200E Adjusting the Y-sensor 1. Remove the face cover, bed cover and front cover (do not disconnect the connectors). Setscrew 2. Remove the carriage cover (refer to the previous page). Y-shield plate 3. Turn the power switch on to move the carriage to the home position.

  • Page 27: Adjusting The X-Sensor

    MC200E Adjusting the X-sensor 1. Remove the face cover, bed cover and front cover (do not disconnect the connectors). Setscrew X-sensor 2. Remove the carriage unit (refer to page 21). 3. Turn the power switch on to move the carriage to the home position.

  • Page 28: Adjusting The X And Y-Sensors (Simple Adjustment)

    MC200E Adjusting the X and Y-sensors (Simple Adjustment) 1. Remove the bed cover and carriage cover. 2. Attach the hoop to the carriage and place the template on the hoop. 3. Turn the power switch on and select the built-in design pattern #1.

  • Page 29: Adjusting The Y-Mortor Gear

    MC200E Adjusting the Y-motor Gear If the machine is noisy when sewing an embroidery design, adjust the Y-motor gear as follows. 1. Remove the carriage cover. 2. Turn the power switch on and press the lettering key and select gothic font. Enter 3 large “A”s and press the OK key.

  • Page 30: Adjusting The X-Mortor Gear

    MC200E Adjusting the X-motor Gear If the machine is noisy when sewing an embroidery design, adjust the X-motor gear as follows. 1. Remove the face cover, bed cover and front cover (do not disconnect the connectors). 2. Remove the carriage unit (refer to page 21). 3.

  • Page 31: Adjusting The Y-Carriage Supporter

    MC200E Adjusting the Y-carriage Supporter 1. Remove the carriage cover. 2. To eliminate a vertical play of the Y-carriage, adjust the position of the Y-carriage supporter. Y-carriage supporter 3. Loosen the setscrew and insert a 0.2 mm thick gauge under the Y-carriage supporter. 0.2 mm 4.

  • Page 32: Replacing The Switching Power Supply

    MC200E Replacing the Switching Power Supply Grounding wire Setscrew (A) To remove: Setscrew (B) 1. Remove the face cover, bed cover, front cover and rear cover. 2. Remove the setscrew (A) and remove the grounding wire. 3. Remove the 3 setscrews (B) and remove the switching power supply.

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