Janome 1600P-QC Service Manual
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Janome 1600P-QC Service Manual

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1600P-QC
SERVICE MANUAL
SERVICE MANUAL
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PARTS LIST
PARTS LIST
1600P-QC

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Summary of Contents for Janome 1600P-QC

  • Page 1 1600P-QC SERVICE MANUAL SERVICE MANUAL & & PARTS LIST PARTS LIST 1600P-QC...
  • Page 2 1600P-QC...

  • Page 3: Table Of Contents

    1600P-QC Table of Contents Replacing the External parts Face Plate ..................2 Top Cover ..................2 Belt Cover ..................2 Motor Cover ..................2 Base ....................2 Mechanical Adjustment Needle Bar Height ................3 Presser Bar Height ................3 Feed Dog Height ................4 Feed Dog Alignment .................

  • Page 4: Replacing The External Parts

    Replacing the External Parts 1. Face Plate Remove the setscrew (4 x 10) and washer Remove the face plate 2. Top Cover Remove the setscrews (4 x 25) Lift the top cover and pull out the motor connec- . Remove the top cover. 3.

  • Page 5: Mechanical Adjustment

    Mechanical Adjustment 1. Needle Bar Height Remove the face plate. Turn the handwheel to bring the needle bar to the lowest position. Loosen the setscrew . Move the needle bar or down and match the upper hairline with the bottom edge of the needle bar bushing NOTE: Be sure not to rotate the needle bar when adjusting the needle bar height.

  • Page 6: Feed Dog Height

    3. Feed Dog Height When the feed dog is fully raised the height should be 0.8 - 1.0mm 0.8–1.0 mm above the needle plate. Set the stitch length dial at 6 (Maximum). Turn the handwheel to bring the feed dog to the highest position.

  • Page 7: Feed Cam Timing

    5. Feed Cam Timing To Check: Lower the needle bar by turning the handwheel until the point of the needle is 17.5 mm above the upper sur face of the needle plate The feed dogs should not move when moving the reverse stitch lever up and down.

  • Page 8: Feed Lifting Cam Timing

    6. Feed Lifting Cam Timing To check: Lower the needle bar until the point of needle is 0.4 mm below the needle plate The top of the feed dogs should be 0–0.1 mm above the needle plate. 0.4mm To adjust: 0 –...

  • Page 9: Needle To Hook Timing

    7. Needle to Hook Timing Remove the needle plate. Loosen the 3 setscrews . Pull out the hook race very slightly (less than 0.5 mm). Raise the needle bar from the lowest position until the lower heirline of the needle bar matches the edge of the needle bar bushing NOTE: The needle bar rises 2 mm from the lowest position.

  • Page 10: Hook Stopper Position

    9. Hook Stopper Position Remove the needle plate, base and feed dog. Loosen the setscrew and move the hook stopper so that the center of the needle is located between the center of th hook stopper and outer side of the hook stopper spring Tighten the setscrew and attach the needle plate...

  • Page 11: Bobbin Winder Stopper

    10. Bobbin Winder Stopper The amount of thread wound on the bobbin should be 16.5–19.5 mm in diameter. Loosen the setscrew . Turn the bobbin winder stopper to adjust the thread amount. • If the amount is too mauch, turn the stopper in the direction A.

  • Page 12: Check Spring Stroke

    11. Check Spring Stroke The amount of the needle thread supplied by the check spring should be 11–15 mm. Thread the machine up to the thread guide lower the presser foot. Lower the needle bar to the lowest position. Hold the thread end and mark the point on the thread beside the thread guide.

  • Page 13: Knee Lifter Lever

    13. Knee Lifter Lever The presser foot rises 7.5 mm when it is fully raised with the knee lifter. Remove the base and lay the machine on its back. Loosen the nut on the knee lifter lever slightly and turn the adjusting screw to adjust the height.

  • Page 14: Needle Threader

    14. Needle Threader To remove: Remove the face plate. Pull the threader out from the threader shaft To attach: Align the groove of the theader with the pin the threader shaft. Push the threader up until it snaps in place. To adjust: If the threader hook thrusts or hits against either...

  • Page 15: Replacing The Electronic Components

    Replacing the Electronic Components 1. Location of the Electronic Components Bobbin winder motor Slide volume Bobbin winder switch Circuit board A Circuit board F Upper shaft sensor Driving motor Lamp Machine socket Thread cutter switch Capacitor Push - pull solenoid Power transfomer Circuit board MS 2.

  • Page 16: Internal Wiring

    3. Internal Wiring To prevent the internal wirings from contacting the moving parts or being caught in the joint of the external parts, the internal wirings should properly be routed and secured as illustrated. Motor cord Motor sensor cord Machine socket cord (primary) Machine socket cord (secondary) Push-pull solenoid cord Capacitor cord...

  • Page 17: Circuit Board-A

    4. Circuit Board-A To remove: Remove the top cover. Pull out connectors from the circuit board-A. Remove the cords from the cord clips Remove the setscrews and the board-A case lid Pull out the connectors under the case lid. Remove setscrews and circuit board-A.

  • Page 18: Circuit Board-F And Slide Volume

    5. Circuit Board-F and Slide Volume Removed the top cover. Pull out the circuit board-F connector , slide volume connector from the circuit board-A Loosen the 3 set screw (A). Remove the ornamental panel Remove the 3 set screws (B) and remove the circuit board-F from the panel.

  • Page 19: To Replace The Printed Circuit Board Ud

    6.To Replace the Printed Circuit Board UD Cord binder To remove: z Remove the top cover, belt cover and base. x Remove the cord binder below the handwheel. c Disconnect the connector of the thread cutter from the printed circuit board A. Printed circuit board A Remove the setscrew A and cord guide.

  • Page 20: Driving Motor

    7. Driving Motor To remove: Remove the belt cover and motor cover. Pull out the motor sensor connector Pull out the motor connector , while pushing the connector lock Remove the nuts and driving motor NOTE: Do not disconnect the connectors by pulling on cord. To disconnect, grasp the connector, not the cord.
  • Page 21 8. Driving Motor (continued) To attach: Install the driving motor to the motor bracket attach the motor belt . Tighten the nuts firmly. Loosen the setscrews slightly and move the motor up or down to adjust the motor belt tension. The belt should deflect 4–5 mm when applying 300 grams of load to the middle of the belt.

  • Page 22: Needle Stop Position

    9.Needle Stop Position Turn the power switch on while pressing the Up/ Down needle position button and bobbin winding button at the same time. Remove the top cover. Lower the needle bar by turning the handwheel until the needle point is 18.7 mm above the upper surface of the needle plate Loosen the setscrew .

  • Page 23: Power Transformer

    10. Power Transformer Remove the top cover and motor cover. Remove the board-A case lid and pull out the transformer connectors (primary and secondary) from the circuit board-A. Remove the driving motor. Remove the setscrew and cord binder Remove the setscrews and transformer To attach: follow the above procedure in reverse.

  • Page 24: Light Bulb

    12. Light Bulb Loosen the set screw and remove the face plate Pull out the light bulb from the lamp socket Insert a new bulb and push it into the lamp socket. Attach the face plate.

  • Page 25: Adjustment Of The Thread Cutter Mechanism

    Adjustment of the Thread Cutter Mechanism 1. Thread Cutter Blade To replace: Remove the needle plate and base. Remove the static cutter blade. Remove the hinge screw and thread cutter balde Attach the new thread cutter balde and secure it with the hinge screw 2 –...

  • Page 26: Thread Guide Plate

    2. Thread Guide Plate Remove the needle plate. Loosen the flat screw and adjust the position of the thread guide plate The left inner edge of the thread guide plate should be approximately 1.4 mm from the center of the needle drop position and the back inner edge 2.7 mm...

  • Page 27: Static Cutter Blade

    3. Static Cutter Blade Remove the needle plate and base. Lower the needle bar to the lowest position. Turn the handwheel toward you while pushing up the link body to engage the thread cutter blade and bring it under the static blade Loosen the setscrews and adjust the position of the static cutter blade...

  • Page 28: Needle To Cutter Cam Timing

    4. Needle to Cutter Cam Timing Remove the base. Pemove the setscrews and gear cover Lower the needle bar to the lowest position. Turn the handwheel toward you to raise the needle 10.5 mm bar while pusging up the link body Continue to turn the handwheel until the thread drawing arm starts to move to the right.

  • Page 29: Thread Drawing Lever

    5. Thread Drawing Lever Remove the base. Loosen the setscrew and free the stopper Turn the the handwheel toward you to raise the needle bar from the lowest position until the needle point is 10.5 mm above the upper surface of the needle plate.

  • Page 30: Auto Tension Release

    6. Auto Tension Release Turn the handwheel toward you to raise the needle bar until the needle point is just above the needle 0.5 - 1.0mm plate. Set the tension dial at 4 and push the solenoid disk fully to the right. The tension disks should open 0.5 – 1 mm.

  • Page 31: Thread Cutter Troubleshooting

    Thread Cutter Troubleshooting The needle thread is not cut. The static cutter is dull. Replace or grind the static cutter blade. The static cutter blade is out Adjust the position of the static cutter blade (see page 25). of position. Skipped stitch before thread Reduce the check spring stroke (see page 10).

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