Janome Memory Craft 3000 Service Manual
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Janome Memory Craft 3000 Service Manual

Janome Memory Craft 3000 Service Manual

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********* SERVICE MANUAL **********

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Summary of Contents for Janome Memory Craft 3000

  • Page 1 ********* SERVICE MANUAL **********...

  • Page 2: Table Of Contents

    CONTENTS Top cover & face plate attaching and removing ..................1 Base & bed cover attaching and removing .................... 2 Belt cover attaching and removing ......................3 Front panel attaching and removing ...................... 4 To adjust the presser bar height ......................5 To adjust the needle drop ........................

  • Page 3: Top Cover & Face Plate Attaching And Removing

    Top cover & face plate attaching and removing TOP COVER (Y) (TO REMOVE) 1. Remove 3 screws (A & B) and top cover. (TO ATTACH) 2. Attached the top cover with 3 screws (A and B). FACEPLATE (Z) (TO REMOVE) 3.

  • Page 4: Base & Bed Cover Attaching And Removing

    Base & bed cover attaching and removing BASE (Y) (TO REMOVE) 1. Remove 6 screws (A) and base. (TO ATTACH) 2. Attach the base with 6 screws (A). BED COVER (Z) (TO REMOVE) 3. Move the drop lever to the left, then remove 2 screws (B). 4.

  • Page 5: Belt Cover Attaching And Removing

    Belt cover attaching and removing (TO REMOVE) 1. Remove 2 screws (A) and belt cover (Y), then pull out. (TO ATTACH) 2. Attach the belt cover (Y) with 2 screws (A).

  • Page 6: Front Panel Attaching And Removing

    Front panel attaching and removing (TO REMOVE) 1. Remove the top cover, belt cover and bed cover (See pages 1, 2 and 3). 2. Remove screw A and loose screws (B, C, D, E, F and G). 3. Pull out connectors (H) and remove the front panel. (TO ATTACH) 4.

  • Page 7: To Adjust The Presser Bar Height

    To adjust the presser bar height The standard presser bar height is 6.0 mm between the bottom surface of the foot (A) and needle plate(B) when the presser bar (C) lifter is lifted. 1. Open the face plate. 2. Raise the presser foot, loosen the presser bar bracket screw (D) and adjust the height to 6.0 mm.

  • Page 8: To Adjust The Needle Drop

    To adjust the needle drop When you select the pattern 01 (straight stitch on center needle position), the needle drop should be in the center position of the needle hole in the needle plate. When the needle swings in maximum zigzag width, the distance between both edges of the needle hole on the needle plate and the needle drop position should be equal as shown below (*** C ***).

  • Page 9: To Adjust The Needle Bar Height

    To adjust the needle bar height The standard distance between the upper edge of the needle eye (A) and the tip of shook should be in the range of 1.6 to 2.0 mm when the tip of hook meets the right side of the needle (B) in ascending travel of needle from its left and lowest position.

  • Page 10: To Adjust Hook Timing

    To adjust the hook timing When the straight stitch at left needle position is selected, the amount of ascending travel of the needle bar from its lowest position (A) to the position where the tip of the rotary hook ex- actly meets the right side of the needle (B) should be 3.25 to 3.55 mm.

  • Page 11: To Adjust The Clearance Between The Needle And The Hook

    To adjust the clearance between the needle and the hook The clearance between needle and hook should be - 0.10 to + 0.05 mm (G). If not, make an adjustment as follows: 1. Remove the needle plate and bobbin holder. 2.

  • Page 12: To Adjust The Backlash Of Hook Drive Gear And Lower Shaft Gear

    To adjust the backlash of hook drive gear and lower shaft gear The backlash of gears should be smooth and should be less than 0.8 mm when the tip of hook (E) is within the width of the feed dog (C) as shown below. 1.

  • Page 13: To Adjust The Feed Dog Height

    To adjust the feed dog height When pressure adjusting lever (C) is at “3” and the presser foot (D) is lowered, the highest position of the feed dog (E) should be 0.80 to 0.90 mm (H) from the surface of the needle plate (F).

  • Page 14: To Adjust The Upper Shaft Shield Plate Position

    To adjust the upper shaft shield plate position When the machine is set for zigzag stitching, the needle should start to swing 6.3 mm to 7.5 mm (G) above the surface of the needle plate (C). 1. Remove top cover. 2.

  • Page 15: To Adjust The Upper Thread Tension

    To adjust the upper thread tension The upper thread tension should be 65 g - 95 g when pulling the thread (cotton thread size 50) in direction C with setting the tension dial at” 3 (Make sure the foot is lowered.) 1.

  • Page 16: To Adjust The Stretch Feed Balance

    To adjust the stretch feed balance When the triple straight stitch is sewn with the feed balancing dial (C) at the standard setting mark (G, the forward feed (A) and reverse feed (B) should be same length. 1. Set the triple straight stitch and the feed balancing dial at standard setting mark (G). 2.

  • Page 17: To Replace And Adjust The Threader Plate

    To replace and adjust the threader plate If the needle threader plate is broken or bent, replace it as follows: (TO REPLACE) 1. Turn the balance wheel toward you until the needle bar reaches its highest position and lower the needle threader knob (D) as far as it will go. 2.

  • Page 18: To Adjust The Buttonhole Lever

    To adjust the buttonhole lever A) Buttonhole lever guide 1. Attach the automatic buttonhole foot (R). 2. Loosen the set screw (A) and leave the clearance of 2.9mm (I) between the spring holder and slider (B) by moving the buttonhole lever guide (K). In this condition, the buttonhole lever (E) should touch the spring holder (C) slightly.

  • Page 19: Board A Attaching And Removing

    Board A attaching and removing (TO REMOVE) 1. Remove the front cover unit. 2. Pull out 8 connectors from the Board A. 3. Remove 4 screws (B) and Board A. (TO ATTACH) 3. Follow the above procedure in reverse. D: Upper shaft sensor H: Feed stepping motor E: Buttonhole sensor Driving motor...

  • Page 20: Board C Attaching And Removing

    Board C attaching and removing (TO REMOVE) 1. Remove the front panel unit (See page 4). 2. Loosen screws (H, I & J), and remove screws L and M. 3. Remove the rear cover (W). 4. Pull out the 4 connectors (O, P, Q & R) and remove screws N. O: Transformer (primary) P: Machine socket Q: Transformer (secondary)

  • Page 21: Board C And Fuse Attaching And Removing

    Board C and fuse attaching and removing (TO REMOVE) 1. Remove the rear cover. 2. Remove 3 screws (A) and Board C (See page 18). 3. Remove 3 screws (B) and remove case cover (G). 4. Replace fuse or Board C. (TO ATTACH) 5.

  • Page 22: Dc Motor Unit Attaching And Removing

    Driving motor unit attaching and removing (TO REMOVE) Remove the front panel unit (See page 4). Remove the machine socket unit (See page 22). (No need to pull out the connectors) Cut the cord binder (H) and pull out the motor connector (C) from Board A. Remove the screw (A) and the cord guide (D).

  • Page 23: Transformer Unit Attaching And Removing

    Transformer unit attaching and removing (TO REMOVE) 1. Remove the front panel unit (See page 4). 2. Remove the Board A and C (See page 17) and machine socket unit (See page 20). 3. Pull out the connectors (A & B) for the transformer (F) from the Board C. 4.

  • Page 24: Machine Socket Unit Attaching And Removing

    Machine socket unit attaching and removing (TO REMOVE) Remove the front panel unit, Board C and base unit. Cut off the cord binder (B) and pull out the connectors (D & E) from Boards A and C. Remove 2 screws (H) and machine socket unit (F). (TO ATTACH) Attach the machine socket unit (F) with 2 screws (H).

  • Page 25: Buttonhole Lever Attaching And Removing

    Buttonhole lever attaching and removing (TO REMOVE) Remove set screw (A) and BH shield plate (B). Remove the snap ring (C). Pull the buttonhole lever (D) toward you, and remove it. (TO ATTACH) Insert the shaft into the holes of the buttonhole lever (D) , and attached the buttonhole lever with the snap ring.

  • Page 26: Board K Attaching And Removing

    Boards F and K attaching and removing Board K (TO REMOVE) Remove the front panel unit (See page 4). Remove the 9 screws (A). Pull out the connector (B) from board K and remove Board K. (TO ATTACH) Follow the above procedure in reverse. BOARD F (TO REMOVE) Remove the front panel unit (See page 4).

  • Page 27: Buttonhole Sensor Attaching And Removing

    Buttonhole sensor attaching and removing (TO REMOVE) 1. Remove the front panel (See page 4). 2. Remove screw (A) and remove the buttonhole sensor unit (B) from the sensor set plate (C). 3. Pull out the connector (D) of buttonhole sensor unit from the Board K. 4.

  • Page 28: Wiring Diagram

    Wiring diagram The connectors of the electrical components should be connected to the respective positions shown in the figure below. Upper shaft sensor H Lamp socket buttonhole sensor Board K Machine socket (secondary circuit) J Transformer primary cord Zigzag stepping motor K Machine socket (primary) Feed stepping motor L Transformer (secondary)

  • Page 29: Multiple Language Function

    Multiple language function The display language can be changed if necessary, as illustrated bellow. Remove the top cover unit. Move the dip switches with the tail of the lint brush A: English B: Deutsch (German) C: Espanol (Spanish) D: Nederlands (Dutch) E: Francais (French) F: Italiano (Italian) G: Portuguese...

  • Page 30: Diagnosis Chart (No.1)

    MEMORY CRAFT 3000 Diagnosis Chart [CHECK OPERATION] If nothing happens on the machine when turned on the power switch is, turn off the power switch and do following: 1. Check all wire connections and recheck. 2. Replace the machine socket and recheck.

  • Page 31: Diagnosis Chart (No. 2)

    DIAGNOSIS CHART FOR MC3000 Step Test operation Defect condition & remedy Correct condition (01) step Turn on the power switch If the machine does not go to Test I. LCD shows [840 Test mode]. LCD, LED while pressing Reverse stitch mode, replace the following parts 2.

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