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Horizon Fitness Memory Craft 9480 QC PROFESSIONAL Service Manual And Parts List

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Second Edition: 08 August 2023
SERVICE MANUAL
&
PARTS LIST
MODEL: HORIZON Memory Craft 9480
QC PROFESSIONAL

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Summary of Contents for Horizon Fitness Memory Craft 9480 QC PROFESSIONAL

  • Page 1 Second Edition: 08 August 2023 SERVICE MANUAL & PARTS LIST MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL...
  • Page 2 First Edition: 24 July 2023 Modified info. Modified: 08 August 2023 P10 and 11: “Before replacing the printed circuit board A, copy the data in the board to a USB flash drive. * Check the clear set mode (refer to page 45).” added. P11: Replacing Electronic Components “Printed circuit board A”...

  • Page 4: Table Of Contents

    INDEX Changing External Parts Face cover .................................. 1 Top cover ..................................1 Belt cover..................................2 Base plate................................... 3 Base cover.................................. 3 Bed cover ................................... 3 Free arm cover ................................4 Front cover ................................. 6 Rear cover .................................. 8 Replacing Electronic Components Printed circuit board A case ............................

  • Page 5: Changing External Parts

    Changing External Parts Face cover Face cover Setscrew A To remove: 1. Open the face cover. Disconnect the connector from the face cover. Remove the setscrews A (2 pcs.). Remove the face cover. To attach: Connector 2. Follow the above procedure in reverse. Setscrew B Top cover Carrying handle...

  • Page 6: Belt Cover

    Changing external parts Belt cover Belt cover Setscrew A To remove: 1. Raise the carrying handle. 2. Loosen the setscrew A. Carrying handle 3. Loosen the setscrew B. Setscrew B Cap and setscrew C Belt cover 4. Remove the caps (2 pcs.) and the setscrews C (2 pcs.).

  • Page 7: Base Plate

    Changing external parts Base plate Base plate Setscrew A Setscrew B To remove: 1. Remove the setscrews A (2 pcs.) and setscrews B (2 pcs.). 2. Remove the base plate. To attach: 3. Follow the above procedure in reverse. Setscrew B Setscrew A Base cover Base cover...

  • Page 8: Free Arm Cover

    Changing external parts Free arm cover Free arm cover Needle plate To remove: 1. Remove the base plate and base cover (refer to page 3). Push down the needle plate release lever to remove the needle plate. Needle plate release lever Bed cover 2.
  • Page 9 4. Unhook the hook A (front side of the free arm) and move the free arm cover to the direction C. Unhook the hook B (inside of the base plate) and move the free arm cover to the direction D. 5.

  • Page 10: Front Cover

    Changing external parts Setscrew A Front cover To remove: 1. Remove the top cover, belt cover, base plate, base cover and free arm cover (refer to pages 1 to 5). 2. Loosen the setscrews A (2 pcs.). (View from the bottom) 3.
  • Page 11 5. Loosen the setscrew D. 6. Remove the setscrew E Setscrew D Setscrew E (View from the top) Hook 7. Unlock the hooks from the front cover. Remove the connectors from the circuit board A (refer to page 11). Remove the front cover. To attach: 8.

  • Page 12: Rear Cover

    Changing external parts Rear cover Face cover To remove: 1. Remove the top cover, base plate, base cover, bed cover and free arm cover (refer to pages 1, 3 to 5). 2. Open the face cover. 3. Loosen the setscrew A. Connector Setscrew A Carrying handle...
  • Page 13 Setscrew C 6. Remove the setscrews C (2 pcs.) and setscrews D (2 pcs.). Setscrew D Hook 7. Unlock the rear cover hooks from the front cover. Connector G Connector E 8. Disconnect the connector E, connector F and connector G from the sockets. Cut and remove the cord binder as necessary.

  • Page 14: Replacing Electronic Components

    Replacing Electronic Components Before replacing the printed circuit board A, copy the data in the board to a USB flash drive. * Check the clear set mode (refer to page 45). Setscrew Printed circuit board A case NOTE: Do not disconnect the connectors by pulling on cord. To disconnect the connectors, grasp the connector, not the cord.

  • Page 15: Printed Circuit Board A

    Replacing Electronic Components Before replacing the printed circuit board A, copy the data in the board to a USB flash drive. * Check the clear set mode (refer to page 45). Printed circuit board A Setscrew NOTE: Do not disconnect the connectors by pulling on cord. To disconnect the connectors, grasp the connector, not the cord.

  • Page 16: Printed Circuit Board F

    Replacing Electronic Components Printed circuit board F Printed circuit board F To remove: Setscrew Setscrew 1. Remove the front cover (refer to pages 6 and 7). 2. Disconnect the connectors from the printed circuit board A (refer to page 11). 3.

  • Page 17: Switching Power Supply

    Replacing Electronic Components Switching power supply Cord guide plate Switching power supply To remove: 1. Remove the top cover, belt cover and front cover (refer to pages 1, 2, 6 and 7). 2. Loosen the setscrew A and remove the cord guide plate.

  • Page 18: Dc Motor

    Replacing Electronic Components DC motor To remove: 1. Remove the top cover, belt cover and front cover (refer to pages 1, 2, 6 and 7). 2. Remove the setscrews (2 pcs.) and the motor belt. Remove the DC motor. Motor belt DC motor Setscrew To attach:...

  • Page 19: Thread Tension

    Replacing Electronic Components Setscrew A Thread tension unit To remove: 1. Remove the top cover, belt cover and the front cover (refer to pages 1, 2, 6 and 7). 2. Remove the setscrews A and B. (View from the top) Thread tension unit Setscrew B 3.

  • Page 20: Mechanical Adjustment

    Mechanical Adjustment Feed dog height When the foot presser foot pressure value is at “6” and the presser foot is lowered, the highest position of the feed dog should be 0.90 to 1.00 mm from the surface of the needle plate. Adjustment 1: 1.

  • Page 21: Needle Drop Position

    Mechanical Adjustment Needle drop position When the straight stitch is selected, the needle should be positioned in the center of the needle plate hole. When the needle drop position is set at “0.0” and “9.0”, the clearance between the side of the needle and the needle hole should be 0.2 mm or more.

  • Page 22: Clearance Between Needle And Tip Of The Rotary Hook (Method 1)

    Mechanical Adjustment Clearance between needle and tip of the rotary hook (method 1) The clearance between the needle and the point of hook should be -0.10 to +0.05 mm. Reverse stitch button 1. Remove the top cover (refer to page 1). 2.

  • Page 23: Clearance Between Needle And Tip Of The Rotary Hook (Method 2)

    Mechanical Adjustment Clearance between needle and tip of the rotary hook (method 2) The clearance between the needle and the point of hook should be -0.10 to +0.05 mm. 1. Remove the bed cover (refer to page 3). Setscrew C Setscrew A 2.

  • Page 24: Hook Timing

    Mechanical Adjustment Hook timing The amount of ascending travel of the needle bar from its lowest position to the position (needle drop position 0.0) where the tip of the rotary hook exactly meets the right side of the needle should be 3.70 to 4.00 mm.

  • Page 25: Needle Bar Height

    Mechanical Adjustment Needle bar height The distance between the upper edge of the needle eye and the hook race should be in the range of 1.6 to 2.0 mm when the tip of the hook meets right side of the needle in the needle drop position “0.0” as the needle ascends from its lowest position.

  • Page 26: Backlash Between Hook Drive Gear And Lower Shaft Gear

    Mechanical Adjustment Backlash between hook drive gear and lower shaft gear The rotary play of the hook should be 0.8 mm or less when the tip of rotary hook is within the width of feed dog. Width of feed dog 1.

  • Page 27: Upper Shaft Shield Plate Position

    Mechanical Adjustment Upper shaft shield plate position When the machine is set for zigzag stitch, the needle should start to swing 7.2 to 8.2 mm above the surface of the needle plate. To check: Reverse stitch button 1. Attach the needle #14. Turn the power switch ON while pressing the start/ stop button and the reverse stitch button.

  • Page 28: Upper Thread Tension

    Mechanical Adjustment Upper thread tension The standard upper thread tension should be 59 to 67 grams when the machine is set for pattern No.1 (U1) and the thread tension is set at “3.4”, measured with a #50 polyester thread being pulled at approximately 110 mm/sec.

  • Page 29: Tension Release Mechanism

    Mechanical Adjustment Tension release mechanism When the presser foot lifter is raised, the tension release mechanism should work correctly. Convex is NOT set at tension release claw 1. Remove the belt cover and top cover (refer to pages 1 and 2). Thread tension 2.

  • Page 30: Needle Threader Hook Position

    Mechanical Adjustment Needle threader hook position If the hook of the hook holder unit is damaged, replace or adjust the part as follows: To replace: 1. Push down the needle threader lever and pull the hook holder unit down to remove it. 2.

  • Page 31: Needle Threader Release Amount For The Wire Of The Hook Holder

    Mechanical Adjustment Adjustment of the release amount for the wire of the hook holder If the hook of the hook holder unit is damaged, replace or adjust the part as follows: The clearance between the wire and the tip of the hook barb should be 0.5 mm or more.

  • Page 32: Thread Drawing Lever

    Mechanical Adjustment Thread drawing lever The standard height of the thread drawing lever from the surface of hook race should be in the range of 5.5 to 6.0 mm. 1. Remove the presser foot, the needle plate and the Hook race Thread drawing lever bobbin holder.

  • Page 33: Upper Feed Dog (1)

    Mechanical Adjustment Upper feed dog (1) The clearance between the upper feed link shaft and upper feed lower shaft should be 2.5 mm when the upper feed adjusting dial is set to “0”. To check: 1. Set the upper feed adjusting dial at “0”. Remove the belt cover and base plate (refer to pages 2 and 3).

  • Page 34: Upper Feed Dog (2)

    Mechanical Adjustment Upper feed dog (2) The clearance between the dual feed foot and upper feed dog should be 4 mm when the stitch length is set at “0”. * Check the upper feed dog (1) (refer to page 29) before this adjustment. To check: 1.

  • Page 35: Upper Feed Dog (3)

    Mechanical Adjustment Upper feed dog (3) The tip of the needle height should be 0 to 1 mm above the surface of the needle plate when the toe of the dual feed foot touch the needle plate. To check: 1. Set the upper feed adjusting dial at “0”. Attach the dual feed foot.

  • Page 36: Buttonhole Lever Position

    Mechanical Adjustment Buttonhole lever position 1. Turn the power switch ON while pressing the start/ stop button and the reverse stitch button. Reverse stitch button The LCD shows the factory setting mode. Press the “BH Sensor” key. Start/stop button Buttonhole lever guide Setscrew 2.

  • Page 37: Thread Cutter

    Mechanical Adjustment Thread cutter The distance between the end of thread cutter plate slit and the end of moving cutter should be in the range of 0.7 to 1.5 mm. To check: 1. Remove the bed cover and free arm cover (refer to pages 3 to 5).

  • Page 38: Presser Bar Lifter Position

    Mechanical Adjustment Presser bar lifter position The clearance between the presser foot and the surface of the needle plate should be 6 mm when the presser foot is raised. The presser foot (zigzag foot A) should be in parallel with the slot of the feed dog teeth when attached.

  • Page 39: Presser Foot Lifter Stopper Position (1)

    Mechanical Adjustment Presser foot lifter stopper position (1) The distance between the presser foot spring release base and the presser foot lifter should be in the range of 39.4 mm to 39.8 mm when the presser foot is raised with the presser foot lifter. Presser foot lifter stopper Preparation: 1.

  • Page 40: Presser Foot Lifter Stopper Position (2)

    Mechanical Adjustment Presser foot lifter stopper position (2) To adjust: 1. Turn the handwheel toward you to lower the needle. Hexagonal Raise the presser foot lifter. socket screw Loosen the hexagonal socket screw (use an Allen wrench of 2.5 mm width across flats). 2.

  • Page 41: Automatic Presser Foot Lifter Initializing Position

    Mechanical Adjustment Automatic presser foot lifter initializing position Adjust the foot sensor position when the presser foot lifter motor unit is replaced. Reverse stitch button To adjust: 1. Remove the top cover (refer to page 1). 2. Turn the power switch ON while pressing the start/ Start/stop button stop button and the reverse stitch button.

  • Page 42: Preseer Foot Height On Needle Plate

    Mechanical Adjustment Preseer foot height on needle plate To adjust: Reverse stitch button 1. Turn the power switch ON while pressing the start/ stop button and the reverse stitch button. The LCD shows the factory setting mode. Press the “Foot Up/Down” key. 2.

  • Page 43: Stretch Stitch Feed Balance

    Mechanical Adjustment Stretch stitch feed balance Adjust the stretch stitch balance dial at the setting mark. The measurement of five of test patterns should be in the range of 33 to 39 mm as shown. Reverse stitch button To adjust: 1.

  • Page 44: Needle Plate Switch

    Mechanical Adjustment Needle plate sensor position Adjust the needle plate sensor position when the needle plate sensor unit is replaced. Fig. 1 Preparation: Slide plate positioning plate ◎ mark 1. Prepare the needle plate and the needle plate for Hook cover plate supporter straight stitch.

  • Page 45: Knee Lifter

    Mechanical Adjustment Knee lifter position Adjust the knee lifter position when the knee lifter sensor unit and printed circuit board A are replaced. Reverse stitch button To adjust: 1. Turn the power switch ON while pressing the start/ stop button and the reverse stitch button. The LCD shows the factory setting mode.

  • Page 46: Embroidery Foot Height

    Mechanical Adjustment Embroidery foot height To adjust: 1. Attach the embroidery foot (P). Reverse stitch button 2. Turn the power switch ON while pressing the Start/ Stop button and the reverse button to enter the factory setting mode. Press the “Foot Up/Down” key. Start/stop button * The presser foot will rise if it is lowered.

  • Page 47: Brightness Adjustment

    Brightness adjustment Adjust the screen brightness if the screen is too dark or too bright. To adjust: Reverse stitch button 1. Turn the power switch ON while pressing the Start/ Stop button and the reverse button to enter the factory setting mode. Press the “Bright“...

  • Page 48: Touch Panel Key Position Adjustment

    Touch panel key position adjustment Calibrate the key positions of the touch screen if you feel the touch screen key is not responding properly. Refer to the page 142 of the instruction book of this model for the touch screen calibration. If the problem persists, make the key position adjustment as follows.

  • Page 49: Clear Set Mode

    Clear set mode Before replacing the printed circuit board A, copy the data in the board to a USB flash drive. Some of the machine adjustment may not be required when the saved data is imported to the new printed circuit board A (refer to the following).
  • Page 50 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 51 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869602005 Top cover (whole unit) 869603006 Top cover (unit) 869004001 Top cover 869005A01 Top cover ornamental panel 869006A01 Reference chart 865010008 Washer 000103808 Setscrew 3x5 862111001 869604007 Top cover body (unit) 869007004 Top cover body 859052003...
  • Page 52 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 53 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869605008 Face plate (unit) (U.S.A.) (Canada) 869605101 Face plate (unit) (Australia) (UK) (Continental Europe) 869008A01 Face plate 869009109 Ornamental panel 000120203 Setscrew 3x8 (B) 869620009 Retractable sewing light (unit) 869017007 Retractable sewing light arm 859505202...
  • Page 54 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 55 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 861636118 Bobbin winder (unit) 861503034 Bobbin winder 861096006 Clutch lever 000120203 Setscrew 3x8 (B) 861091001 Bobbin winder arm spring 861092002 Bobbin winder set plate 000001609 Snap ring E-5 856512100 Leaf switch (unit) 000081706 Setscrew 2.5x5...
  • Page 56 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 57 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 861606016 Needle plate (unit) 861013032 Needle plate 861014000 Hook cover plate supporter 809134005 Hook cover plate supporter base 809135006 Guide holder 809137008 Cutter 809184000 Leaf 000014306 Snap ring CS-3 825016000 Hook cover plate release button 825017001...
  • Page 58 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 59 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869601004 Rear cover (unit) 869002A01 Rear cover 865526013 Printed circuit board L2 (unit) 860167006 Lamp cover 2 000014306 Snap ring CS-3 735516209 Relay cable 865505005 Face plate cable (unit) 869003000 Spool stand set plate 000161206...
  • Page 60 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 61 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 862621216 Front bracket (unit) 862045014 Front bracket 808673307 Buttonhole lever (unit) 000002105 Snap ring E-3 830057021 Buttonhole lever guide 000103808 Setscrew 3x5 846044002 Sensor base plate 000101105 Setscrew 3x4 852502921 Printed circuit board G1 (unit) 853028002...
  • Page 62 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 63 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869606009 Needle bar supporter (unit) 869021004 Needle bar supporter 000111902 Hexagonal socket screw 3x4 735144006 Needle bar supporter pin 000002507 Snap ring E-4 000070609 Washer 6 673022002 Washer 858538005 Needle bar (unit) 858540000 Rotation pin stopper (unit)
  • Page 64 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 65 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869618004 Upper shaft (unit) 000111706 Hexagonal socket screw 5x8 000110901 Hexagonal socket screw 5x4 859214005 Upper feed lifting cam 000078319 Setscrew 3x6 670079201 Upper shaft front bushing 000040105 Washer 767077006 Ring 000111304...
  • Page 66 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 67 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 859640004 Upper feed upper shaft (unit) 000103509 Setscrew 4x10 858156005 Upper feed upper shaft spring 859627027 Upper feed foot (unit) 000002105 Snap ring E-3 846327002 Pin (1) 858625000 Upper feed adjusting base plate (unit) 858072006 Upper feed adjusting base plate 846351005...
  • Page 68 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 69 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 859637112 Feed rock shaft (whole unit) 858621006 Feed rock shaft (unit) 859638113 Hook race (unit) 859639103 Feed dog set base (unit) 867033003 Feed dog 000104005 Setscrew 3.5x8 825099007 Feed dog base shaft 000111407 Hexagonal socket screw 4x6 825103005...
  • Page 70 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 71 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 869614000 Front cover (unit) 869040A01 Front cover 869615001 Display (unit) 869042A01 Ornamental panel 000120203 Setscrew 3x8 (B) 869503005 Rotary encoder (unit) 868614007 Dial (unit) 869046005 Printed circuit board A case 869413029 Printed circuit board A 869509001...
  • Page 72 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 73 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 865614101 Presser foot lifter motor (unit) 000081005 Setscrew 4x8 000188405 Nylon clip ACC-2 000188014 Nylon clip ACC-3.5 865616000 Zigzag width motor (unit) 863638002 Automatic thread cutter (unit) 858088108 Knee lifter shaft 859021014 Knee lifter stopper 000138503...
  • Page 74 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 75 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 865613007 DC motor (unit) 865504004 DC motor 858117004 DC motor set plate 000115009 Setscrew TP 3x8 000115607 Setscrew TP 4x8 865612006 Feed dog drop lever (unit) (U.S.A.) (Canada) 865612109 Feed dog drop lever (unit) (Australia) (UK) (Continental Europe) 858143009 Feed dog drop lever...
  • Page 76 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST...
  • Page 77 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 859804008 Rolled hem foot D 859805009 Zipper foot E 859806011 Satin stitch foot F 859807001 Blind hemming foot G 862822013 Automatic buttonhole foot R 859832016 Stabilizer plate 859810007 Overedge foot M 859813000 Open toe satin stitch foot F2 859811008...
  • Page 78 MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST 1 (U.S.A.) (Canada) 1 (Australia) 1 (UK) 1 (Continental Europe)

  • Page 79: Parts List

    MODEL: HORIZON Memory Craft 9480 QC PROFESSIONAL PARTS LIST PARTS DESCRIPTION 856519004 Power cable (U.S.A.) (Canada) 830314018 Power cable (Australia) 830377008 Power cable (UK) 830335004 Power cable (Continental Europe) 869800005 Instruction book (English) 869800016 Instruction book (French) 869800038 Instruction book (German) 869800049 Instruction book (Dutch) 869811009...

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