Pfaff ambition essential 1.0 Service Manual
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Pfaff ambition essential 1.0 Service Manual

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ambition
1.0
1.5
essential
Service Manual
104 73 15-26
24 July 2014

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Summary of Contents for Pfaff ambition essential 1.0

  • Page 1 ambition essential Service Manual 104 73 15-26 24 July 2014...

  • Page 2: Table Of Contents

    Contents IMPORTANT SAFETY INSTRUCTIONS ......................5 Directions for use............................6 ESD ................................6 Service tools ..............................7 Settings - Quick reference ..........................8 Belt tension - drive belt ........................11 Motor Belt tension ..........................11 Upper shaft axial play .........................12 Take up lever ............................12 5. Timing of the Feeding in relation to the needle ..................13 6.
  • Page 3 Main Circuit board - Circuit diagram Ambition 1.0 and1.5 ................49 LCD Circuit board - Circuit diagram......................50 Main Circuit board - Circuit diagram Ambition essential ................51 Power supply ..............................52 Fault fi nding Ambition 1.0 - 1.5 ........................53 No operation of the machine ........................53 No operation sewing machine.
  • Page 4 Please note that on disposal, this product must be safely recycled in accordance with relevant National legislation relating to electrical/electronic products. If in doubt please contact your retailer for guidance. Bitte beachten Sie, dass hinsichtlich der Entsor- gung dieses Produkts, vorschriftsmäßig entspre- chend der gültigen nationalen Gesetzgebung für elektrische/elektronische Produkte, recycelt werden muss.

  • Page 5: Important Safety Instructions

    This household sewing machine is designed to comply with IEC/EN 60335-2-28 and UL1594 IMPORTANT SAFETY INSTRUCTIONS When using an electrical appliance, basic safety precautions should always be followed, including the following: Read all instructions before using this household Sewing machine. DANGER –...

  • Page 6: Directions For Use

    Directions for use These service instructions are intended to be used by service workshop personnel, or by salesmen who carry out servicing in their own districts. They assume a thorough knowledge of the handling of precision appliances and accessibility to service tools. The manual is divided into four sections and covers all service operations and checks which should be carried out when making a complete overhaul of a sewing machine.

  • Page 7: Service Tools

    Service tools A reasonable requirement in a domestic sewing machine is that it should able to sew all types of fabrics used in the home. The settings made when assembling and sewing-in the machines are those most suited to give the best results in the majority of fabrics and fabric combinations. In doing so, consideration has been given to the requirements of different markets.

  • Page 8: Settings - Quick Reference

    Settings - Quick reference Settings - Quick reference Belt tension, drive belt The belt tension shall be adjusted by re-position tensioning roller by push 3~4m/m it up or down until it is a fi rm belt tension. Belt tension, motor belt Move the motor unit (b) util a correct belt tension is obtained.
  • Page 9 Settings - Quick reference 12. Setting the bobbin stop to the bobbin. 13. Setting the feed dog in relation to the needle plate Sideways the feed dog should be symmetrically set in relation to the needle plate slot. 14. Feed dog height 0.9~1.05mm When Feed dog teeth are in its highest position they should be 0.9-1.05 mm above the needle plate.
  • Page 10 Settings - Quick reference 23. Lower thread tension (thread tension of the bobbin case) The thread tension spring of the bobbin case shall give a resistance of 10-14 g when pulling the thread slowly, using normal polyester thread. 24. Upper thread tension When the thread tension dial is set at 4 a correct take-up should be obtained at straight stitching and zig-zag using normal cotton fabrics and polyester thread.

  • Page 11: Belt Tension - Drive Belt

    Settings 1. Belt tension - drive belt Check The fl at-toothed belt must be set so that the sewing hook has no play in its rotating direction, but it must be possible to turn the machine easily. Press lightly against middle of fl at-toothed belt. The belt must move 3 to 4 mm.

  • Page 12: Upper Shaft Axial Play

    Settings 3. Upper shaft axial play Check The axial play of the arm shaft should not be larger than 0.05 mm. Adjustment Remove the face plate and top cover. Loosen 2 screws (a, b) on main shaft collar (c). Pull hand wheel to the right. Push main shaft collar (c) to the left against main shaft bushing (d), and tighten screws (a, b) .

  • Page 13: Timing Of The Feeding In Relation To The Needle

    Settings 5. Timing of the Feeding in relation to the needle Check Remove all covers. Turn the hand wheel so the needle comes to its lowest point. The feed lifting rock cam (a) and the screw (b) of feed rock cam (c) should now be parallel. Adjustment Turn the hand wheel to make the needle comes to its lowest point.

  • Page 14: Setting The Needle In Centre Position

    Settings 6. Setting the needle in centre position NOTE! ONLY FOR AMBITION 1.0- 1.5 Check 1 Insert a new needle size 90 universal in the machine. The needle should always go its to the centre position, when the machine is turned on repeatedly. Needle point Check 2 - using Service program Go to the service program of the machine.
  • Page 15 Settings 6. Setting the needle in centre position NOTE!ONLY FOR AMBITION ESSENTIAL Check 1 Insert a new needle size 90 universal in the machine. The needle should always go its to the centre position, when the machine is turned on repeatedly. Needle point Adjustment - needle position 1.

  • Page 16: Zigzag Movement Of The Needle Adjustment

    Settings 7. Zigzag movement of the needle adjustment NOTE! ONLY FOR AMBITION 1.0- 1.5 Check Go to service program , Menu 3 choose the No 4 Zig-zag 4x7 mm. Set needle bar at its lowest point when it swings to left. Turn the hand wheel to move the needle bar upward.
  • Page 17 Settings 7. Zigzag movement of the needle adjustment NOTE!ONLY FOR AMBITION ESSENTIAL Check 1. Press the ” “ button to ” “ mode on front cover. 2. Choose the pattern No 2 ” “ for zigzag stitch and width of 7 mm. 3.

  • Page 18: The Timing Of The Hook In Relation To The Needle

    Settings 8. The timing of the hook in relation to the needle Check Set a new needle size 90 universal into the machine. Remove the needle plate, bobbin case holder and the bobbin case. Set machine on straight stitching. As the needle is moving upwards, the tip of the hook should pass behind the centre of the needle, when the needle is 2.3 mm above its lower turning position.

  • Page 19: Play Between Hook Gear And Lower Shaft Gear

    Settings 9. Play between Hook gear and lower shaft gear It is impossible to obtain an equally large play in one rotation of the cog wheel, but it should be as small as possible at the tightest spot during the revolution. Check Move the cog wheel with the hand wheel and check play of the gears at 4 positions –...

  • Page 20: The Gap Between The Needle And The Hook

    Settings 10. The gap between the needle and the hook Check Choose the pattern #1, straight stitch Insert a new needle size 90 universal in the machine. Remove the bobbin case. Rotate hand wheel until the tip of the hook arrives behind the needle, see Ill Check the gap by pressing a small screw driver against the needle.

  • Page 21: Setting The Needle Plate In Relation To The Needle In The Feeding Direction

    Settings 11. Setting the needle plate in relation to the needle in the feeding direction. Check Insert a new needle size 90 universal in the machine. Set the needle so the needle eye is just above the needle plate. In the feeding direction the needle should descend right into the middle of the needle hole of the needle plate.

  • Page 22: Setting The Bobbin Stop To The Bobbin

    Settings 12. Setting the bobbin stop to the bobbin Remove the needle plate. Back bobbin stop Ill 1: Check Turn the hand wheel counter-clockwise, the shuttle hook (c) will move towards rotary hook plate (d), and generate a distance between the shuttle hook (c) and the rotary hook plate (e). Using the distance gauge to test the play, the distance should be 0.3-0.5 mm.

  • Page 23: Setting The Feed Dog In Relation To The Needle Plate

    Settings 13. Setting the feed dog in relation to the needle plate Check Sideways the feed dog should be symmetrically set in relation to the needle plate slot. Adjustment Remove the free arm cover, base plate and extension cover. Loosen the screw (a) of the feed crank shaft (b). Loosen the screw (c) of the feed crank shaft (d).

  • Page 24: Feed Dog Height

    Settings 14. Feed dog height Check Bring the feed dog to its highest position. The top of the feed dog should be 0.9-1.05 mm above the needle plate. Check with setting gauge 63-112 120 08/000 0.9~1.05mm Adjustment Bring the feed dog to its highest position. Remove the lower free arm cover.

  • Page 25: The Needle Bar Height

    Settings 15. The needle bar height Check Remove face plate, needle plate and bobbin case. Put in the setting needle (412 35 29 - 03). The needle shall be in its centre position, straight stitching. 28.55 mm Remove the screws of rotary hook plate (a, b) and rotary hook plate.

  • Page 26: Threading Device

    Settings 16. Threading device Check 0.1 mm Insert a new # 70 needle. Bring the needle bar to its highest turning position. The threader hook (d) shall go smoothly into the needle eye. See illustrations. Adjustment height - stop Remove the face plate Turn on machine and press the Needle up/down button to set the needle bar at its highest position.

  • Page 27: Presser Foot Height And Parallelism To The Needle Plate

    Settings 17. Presser foot height and parallelism to the needle plate Check When the presser foot is in its highest lifting position it shall be approx. 7~7.2 mm above the needle plate and in its down position the presser foot should be parallel to the feed dog. Adjustment Put on a presser foot.

  • Page 28: Height Of Presser Bar's Guide Piece

    Settings 18. Height of presser bar’s guide piece Check: Raise the presser foot to second position. Set the needle at the highest position. The gap between presser bar and press bar ring should be around 0.5 mm. (1) 0.5 mm Adjustment: Loosen up the screw (a) Set the Guide piece so its 0.5 mm between presser bar ring and guide peice...

  • Page 29: Setting The Idt Excenter

    Settings 19. Setting the IDT excenter Check Remove face plate and top cover. Bring the needle bar to its lowest position. Check position of feed cam marking (a) with marking on arm shaft (b) . Adjustment 1. Remove face plate and top cover. 2.

  • Page 30: Adjustment Of The Idt Foot - Height

    Settings 20. Adjustment of the IDT foot - height Check Put on the presser foot #0A. Engage the IDT. Turn on the machine and set it to maximum stitch lenght. Turn the hand wheel one full turn to calibrate the step motor. Lower the presser bar.

  • Page 31: Adjustment Of The Idt Foot - Feeding Position

    Settings 21. Adjustment of the IDT foot - feeding position Check of feeding direction Turn on the machine and set it to maximum stitch lengths. Turn the hand wheel one full turn Turn the handwheel in sewing direction until the rising feed dog teeth is fl...

  • Page 32: Setting Idt Foot Sideways

    Settings 22. Setting IDT foot sideways Check: The front edge of the IDT foot must be in the middle of the center feed dog. (3) Adjustment: Raise the presser foot lever (a) and engage IDT. Remove the presser foot and face plate. Set the feed dog fl...

  • Page 33: Lower Thread Tension (Thread Tension Of The Bobbin Case)

    Settings 23. Lower thread tension (thread tension of the bobbin case) Check Insert a full bobbin into the bobbin case. The thread tension spring of the bobbin case shall give a resistance of 10 - 14 g when pulling the thread slowly, using normal polyester thread.

  • Page 34: Upper Thread Tension

    Settings 24.Upper thread tension Check A correct interlacing of the upper thread and the bobbin thread (cotton thread 50/2 or synthetic fi ber thread 100/35) must take place approximately in the middle of the fabric at straight and zigzag stitch setting with the tension dial at ”4”.

  • Page 35: Stitch Length Balance Basic Setting

    Settings 25. Stitch length balance basic setting Check 1 The feed dog should after turning the machine on and off several times always reach such a position that 2.5 mm straight stitching will be obtained. Check 2 Ambition 1.0 and 1.5 Go to the service program of the machine.

  • Page 36: Stitch Length Balance

    Settings 26. Stitch length balance Check Both columns of the buttonhole shall be of the same density. The mending stitch shall look according to illustration. On AMBITION 1.0-1.5 Use service program menu 4 press key nr. 1 and presser foot #2A. On AMBITION ESSENTIAL Press button to come to mode and use pattern No 15...

  • Page 37: Bh Photo Sensor Position Adjustment

    Settings 27. BH photo sensor position adjustment NOTE! Check and adjustment is done without the buttonhole foot. on the machine. Check Remove the face plate and back cover. Pull the BH lever down. The BH lever crank (b) and the photo sensor’s (c) blocking movement should be set in the middle. (2) Adjustment Loosen screw (e) of BH movement crank (d).

  • Page 38: Adjustment Of Bobbin Winding

    Settings 28. Adjustment of bobbin winding Check When winding up the lower thread onto the bobbin the machine should wind even. Adjustment Place empty bobbin on spindle. While winding , observe the shape of bobbin winding: - When the lower part of bobbin winding has more thread turn the screw (b) of threader guide counterclockwise.

  • Page 39: Service Program Ambition 1.0 And 1.5

    Service Program Ambition 1.0 - 1.5 Service program Ambition 1.0 and 1.5 In order to facilitate the checking and setting of the different functions of the machine, there is a serviceprogram. NOTE ! THIS IS ONLY FOR AMBITION 1.0 AND 1.5. Service Program Handling Enter the service program by pressing the Reverse button (A) and pattern restart button (B) simoulanesly...

  • Page 40: Functions Of The Service Menu 1 - Stepper Motors

    Service Program Ambition 1.0 - 1.5 Functions of the service menu 1 - Stepper motors Pressing the up or down arrow buttons to select (ambition 1.0). Pos 1. Needle left/Sensor Position Is used to set the position of sensor wheel to the sensor of the needles step motor. Needle step motor takes its calibration position - Needle to the Left.

  • Page 41: Functions Of The Service Menu 2 - Display And Sensor

    Service Program Ambition 1.0 - 1.5 Functions of the service menu 2 - Display and Sensor Entering service menu 2. Ambition 1.0 - Press button “Menu Maneuvering - Left or Right” to toggle between the menus. Ambition 1.5 - Touch with the stylus on ”Display sensor page” in the display to trogle between the menues The display shows the Ambition service menu 2 according to below picture.
  • Page 42 Service Program Ambition 1.0 - 1.5 Pos No 2 Display test 2 Display contrast of the machine. Is used to set the default contrast of the machine. To change the contrast use the Stitch width + and - buttons on the foil key board.

  • Page 43: Functions Of The Service Menu - Test Patterns

    Service Program Ambition 1.0 - 1.5 Functions of the service menu - Test Patterns NOTE! The functions in this menu are on Ambition 1.0 also reached by pressing the buttons 0-9. Key No 1 The machine sews Straight stitch 2,5 mm. Key No 2 The machine sews Straight stitch 4 mm.

  • Page 44: Functions Of The Service Menu 6

    Service Program Ambition 1.0 - 1.5 Functions of the service menu 6 - Functions of the service menu - Info / Test Patterns Key No 1 Sewing a preprogramed Darning stitch ( Mending stitch) is used to set and check the stitch balance of the machine.

  • Page 45: Functions Of The Service Menu - Key Board Test

    Service Program Ambition 1.0 - 1.5 Functions of the service menu - Key Board Test Entering service menu 5. Press button “keyboard test”. The display shows the ambition service menu 5 The display will now show the ambition service menu 5. Key Board test To verify the functionallity of the keyboard, the keys that is indicated in the display shall be pressed one at a time.

  • Page 46: Removing The Covers

    Covers Removing the covers NOTE: Before adjusting or repairing the machine, make sure to: Disconnect the machine’s main plug. Remove needle and presser foot. Remove detachable work support. Base cover Lay down machine. Remove 4 screws (a, b, c, d). Remove base cover.
  • Page 47 Covers Rear cover Remove the screw (n). Located on the inside of the rear cover. Turn the machine and Remove 4 screws (o, p, q, r). Move the feed dog lowering button to the middle for easier removal of rear cover. Remove the back cover.

  • Page 48: Front Cover

    Covers Front cover From the left side of the machine loosen the screw (s). From the top, loosen up the screw (t). Remove screw cap (x) To locate the screw (u) use an electric torch (fl ash light) since its positioned inside the machine. Loosen the screw (u).

  • Page 49: Main Circuit Board - Circuit Diagram Ambition 1.0 And1.5

    Dismantling and mounting Main Circuit board - Circuit diagram Ambition 1.0 and1.5 FOR SAFTEY REASONS ALWAYS DISCONNECT THE POWER CORD FROM THE MACHINE BEFORE REMOVING THE CIRCUIT BOARD AND MAKE SURE TO USE WRIST BAND AND ESD MAT. ATTENTION! It is of the utmost importance that precautions are being taken in order to avoid damage of the electronics by electro static discharges (ESD).

  • Page 50: Lcd Circuit Board - Circuit Diagram

    Dismantling and mounting LCD Circuit board - Circuit diagram FOR SAFTEY REASONS ALWAYS DISCONNECT THE POWER CORD FROM THE MACHINE BEFORE REMOVING THE CIRCUIT BOARD AND MAKE SURE TO USE WRIST BAND AND ESD MAT. ATTENTION! It is of the utmost importance that precautions are being taken in order to avoid damage of the electronics by electro static discharges (ESD).

  • Page 51: Main Circuit Board - Circuit Diagram Ambition Essential

    Dismantling and mounting Main Circuit board - Circuit diagram Ambition essential FOR SAFTEY REASONS ALWAYS DISCONNECT THE POWER CORD FROM THE MACHINE BEFORE REMOVING THE CIRCUIT BOARD AND MAKE SURE TO USE WRIST BAND AND ESD MAT. ATTENTION! It is of the utmost importance that precautions are being taken in order to avoid damage of the electronics by electro static discharges (ESD).

  • Page 52: Power Supply

    Dismantling and mounting Power supply FOR SAFTEY REASONS ALWAYS DISCONNECT THE MAIN POWER CORD FROM THE MACHINE BEFORE REMOVING THE POWER SUPPLY. Dismantling When removing the Power Supply; please remove all the covers fi rst. Remove the Main PC board. Disconnect the cable.

  • Page 53: Fault Fi Nding Ambition 1.0 - 1.5

    Fault fi nding Ambition 1.0 - 1.5 Fault fi nding Ambition 1.0 - 1.5 No operation of the machine Remove the front cover. See the arrow point 2 fuses (a, b) on the main Board. Replace the main board if the fuse is blown. No operation sewing machine.

  • Page 54: Speed Adjustment No Operation

    Fault fi nding Ambition 1.0 - 1.5 Speed adjustment no operation Check if the connector from the speed adjustment is properly connected to the LCD board CN2. Replace the Speed slide resistor. Replace the LCD board. No operation of the Zig-zag step motor Check - using Service program Go to the service program of the machine.

  • Page 55: No Operation Of Foot Controller

    Fault fi nding Ambition 1.0 - 1.5 No operation of Foot controller Check - using Service program Go to the service program of the machine. In Menu 2 choose the No 4 Foot control sensor. Check if the connector N12 is properly connected to the main board. Check if the connector from the socket is properly connected to the main board.

  • Page 56: Fault Fi Nding Ambition Essential

    Fault fi nding Ambition essential Fault fi nding Ambition essential No operation of the machine Remove the front cover. See the arrow point 2 fuses (a, b) on the main Board. Replace the main board if the fuse is blown. No operation sewing machine.

  • Page 57: No Operation Dc Motor

    Fault fi nding Ambition essential No operation DC motor Check if plug JP6 in main board is properly connected. Replace the main motor or the Main Board if the problem continues. No operation Needle position, reverse Check if the function buttons seems to be damaged.(#1) Check if the cable from needle position / reverse is properly connected to the LCD board CN3 (#2) Replace the needle position/ reverse board (#3).

  • Page 58: No Operation Of The Zig-Zag Step Motor

    Fault fi nding Ambition essential No operation of the Zig-zag step motor Check if the connectors JP1 and JP12 are properly connected to the main board (#1). If the problem still remains. Replace the ZigZag Photo sensor board (#2a). Replace the ZigZag step motor (#2b). Replace the main board.

  • Page 59: No Operation Of Bh

    Fault fi nding Ambition essential No operation of BH Check if the connector JP10 is properly connected to the main board(#1) Check if the indentation on the top of the BH arm is positioned in the center of photosensor switch (#2) Adjustment : See adjustment : Button hole sensor position.

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Ambition essential 1.5

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