Janome MC9900 Additional Service Manual
  1. Manuals
  2. Brands
  3. Janome Manuals
  4. Sewing Machine
  5. MC9900
  6. Additional service manual

Janome MC9900 Additional Service Manual

Embroidery unit
Hide thumbs Also See for MC9900:
Table of Contents

Advertisement

Quick Links

See also: Service Manual
ADDITIONAL SERVICE MANUAL FOR
MODEL MC9900 (EMBROIDERY
• X-MOTOR REPLACEMENT
• Y-MOTOR REPLACEMENT
• PRINTED CIRCUIT BOARD S1 REPLACEMENT
• PRINTED CIRCUIT BOARD S2 REPLACEMENT
• EMBROIDERY UNIT DETECTING SWITCH REPLACEMENT
• FILM REPLACEMENT
• X-SENSOR REPLACEMENT
• Y-SENSOR REPLACEMENT
• X-BELT REPLACEMENT
• Y-BELT REPLACEMENT
• PARTS LIST (EMBROIDERY UNIT)
UNIT)

Advertisement

Table of Contents
loading

Related Manuals for Janome MC9900

Summary of Contents for Janome MC9900

  • Page 1 ADDITIONAL SERVICE MANUAL FOR MODEL MC9900 (EMBROIDERY UNIT) • X-MOTOR REPLACEMENT • Y-MOTOR REPLACEMENT • PRINTED CIRCUIT BOARD S1 REPLACEMENT • PRINTED CIRCUIT BOARD S2 REPLACEMENT • EMBROIDERY UNIT DETECTING SWITCH REPLACEMENT • FILM REPLACEMENT • X-SENSOR REPLACEMENT • Y-SENSOR REPLACEMENT •...

  • Page 2: Table Of Contents

    INDEX Preparation ........................2-5 • Removing Y-carriage cover (upper) ................. 2 • Removing X-carriage cover and Embroidery unit cover ........3-5 Replacing X-motor ......................6 Replacing Y-motor ...................... 6-11 • Removing Y-carriage cover (lower) ............... 6-7 • Removing Film ......................7 •...

  • Page 3: Preparation

    MC 9900 Preparation Remove Y-carriage cover (upper), X-carriage cover and Embroidery unit cover before replacing to access carriage parts. • Removing Y-carriage cover (upper) z Push down the carriage arm release lever q. Extend the carriage arm. Swing out the carriage arm until it locks in fully extended position.

  • Page 4: Removing X-Carriage Cover And Embroidery Unit Cover

    MC 9900 • Removing X-carriage cover and Embroidery unit cover b Remove the setscrews r (3 pcs.). n Remove the X-carriage cover (unit). m Remove the setscrews t (3 pcs.).
  • Page 5 MC 9900 , Turn the embroidery unit upside down. Remove the setscrews y, u and i. . Turn the embroidery unit again. Push down the carriage arm release lever q. Retract the carriage arm to the stored position. ⁄0 Move the carriage arm as far as it goes in the direction of arrow o.
  • Page 6 MC 9900 ⁄2 Remove the embroidery unit cover (unit). ⁄3 Position the flexible cable !2 under the guide plate !3 so the cable will not be damaged when moving. ⁄4 Move the carriage arm in the direction of arrow !4 . ⁄5 Push down the carriage arm release lever q.

  • Page 7: Replacing X-Motor

    MC 9900 Replacing X-motor • Removing X-motor z Disconnect the connector from printed circuit board Pry up the lock tab of the connector with a precision driver and pull out the brown e, orange q and red w cords. Precision screwdriver NOTE: The colors of the cords may differ from actual products.

  • Page 8: Removing Film

    MC 9900 c Remove the Y-carriage cover (lower). • Removing Film v Remove the setscrews e (2 pcs.) on the film holder. b Remove the film holder and the film.

  • Page 9: Removing Film Guides

    MC 9900 • Removing Film guides n Remove the setscrews r (4 pcs.) on the film guides. Fig.1 m Remove the setscrews t (2 pcs.) on the film guides. • Removing Y-carriage , Pull the cable in the direction of arrow y to disconnect the flexible cable from the printed circuit board S1.
  • Page 10 MC 9900 ⁄0 Remove the setscrew i. ⁄1 Remove the setscrew o. ⁄2 Remove setscrews !0 (4 pcs.) (see fig.1 on page 8). Remove the Y-carriage. ⁄3 Pull out the guide bars !1 and !2 from the Y-carriage. To attach the guide bars to the carriage, follow the procedure in page 20.

  • Page 11: Removing Y-Motor

    MC 9900 • Removing Y-motor ⁄3 Remove the guide bars (X2) from the Y-carriage. Loosen the hexagonal socket screw !3 . ⁄4 Slide the stopper !4 in the direction of arrow to access the setscrew !5 . Remove the setscrew !5 . ⁄5 Remove the setscrew !6 , !7 , !8 , !9 and @0 .
  • Page 12 MC 9900 ⁄6 The Y-motor @1 is separated from the base @2 . ⁄7 Remove the setscrews @3 (2 pcs.). ⁄8 Remove the cord binder and disconnect the connector @5 from the printed circuit board S2 @4 . ⁄9 Pry up the lock tab of the connector with a precision driver and pull out the red @6 , orange @7 , brown @8 , brown @9 and red #0 cords.

  • Page 13: Replacing Printed Circuti Board S1

    MC 9900 Replacing Printed Circuit Board S1 z Remove the Y-carriage cover (lower) (see pages 6-7). Remove the setscrew q. Disconnect the connectors from the printed circuit board S1. Remove the printed circuit board S1. To attach, follow the above procedure in reverse. Replacing Embroidery Unit Detecting Switch z Remove the setscrew q.

  • Page 14: Replacing Film

    MC 9900 Replacing Film • Removing film z To remove the film, remove the setscrews q (2 pcs.) on the film holder. x Remove the film holder w and the film. • Attaching film c Replace the film. Insert the film in the film cover. v Insert the both edges of the film in the guides e, then move the film in the direction of arrow.

  • Page 15: Replacing X-Sensor

    MC 9900 Replacing X-sensor • Removing X-sensor z Disconnect the connector from printed circuit board Pry up the lock tab of the connector with a precision driver and pull out the brown e, orange q and red w cords. Precision screwdriver x Remove the setscrew r and t to remove the cord guide plates.
  • Page 16 MC 9900 n Attach the X-sensor. Tighten the setscrew r temporarily. m Attach the embroidery unit to the MC9900. Insert the machine plug into the power inlet. Insert the power supply plug into the wall outlet and turn the power switch on.

  • Page 17: Replacing X-Belt

    MC 9900 Replacing X-belt • Removing X-belt z Remove the setscrews q (2 pcs.). Remove the X-belt base plate. x Remove the setscrews w (3 pcs.). Replace the X-belt. • Attaching X-belt c Hook the X-belt to the pulley under the X-belt base plate.

  • Page 18: Replacing Printed Circuit Board S2

    Tighten the setscrew y to attach the Y-sensor. Insert the cords e, r and t to the connector. Plug the connector to the printed circuit board S2. x Attach the embroidery unit to the MC9900. Insert the machine plug into the power inlet. 23.1 mm Insert the power supply plug into the wall outlet and turn the power switch on.

  • Page 19: Replacing Y-Belt

    MC 9900 Replacing Y-belt • Removing Y-belt z Remove the hexagonal socket screw q. Slide the stopper in the direction of arrow. x Remove the setscrews w. c Remove the setscrews e. v Remove the Y-belt. • Attaching Y-belt b Attach the Y-belt. n Be sure that the Y-belt deflection to about 3 mm by pressing the middle of Y-belt with approximately 30 grams of pressure.

  • Page 20: Y-Carriage Adjustment (Backlash Of Y-Carriage)

    MC 9900 Y-carriage adjustment If there is a play at Y-carriage, follow the procedure below. z Push down the carriage arm release lever q. Extend the carriage arm. Swing out the carriage arm until it locks in fully extended position. x Turn the embroidery unit upside down.

  • Page 21: Attaching Guide Bars To Carriage Unit

    MC 9900 • Attaching Guide bars to carriage unit z Insert the guide bars q and w to the holes of X-carriage as shown. x Attach the guide bars to the carriage unit. Pull the guide bar q in the direction of arrow. Tighten the setscrews e and r temporarily.
  • Page 22 MC 9900 c Slide the X-carriage in the direction of arrows. Be sure that X-carriage moves on the guide bars smoothly. Tighten the setscrews e, r. Tighten the setscrews t and y temporarily. b Move the X-carriage in the direction of arrows. Tighten the setscrews t and y while making sure that X-carriage moves on the guide bars smoothly.

This manual is also suitable for:

Mc12000

Table of Contents