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Brother KE-430B Service Manual

Electronic lockstitch bar tracker/electronic lockstitch belt loop bar tracker/electronic lockstitch pattern tracker/electronic lockstitch button sewer e series.
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KE-430B, 430C, 431B, 431C
KE-432B, 432C, 433B
KE-434B, 434C, 435B, 435C
KE-436B, 436C, 484C
BE-438B, 438C
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH BAR TACKER
ELECTRONIC LOCKSTITCH BELT LOOP BAR TACKER
ELECTRONIC LOCKSTITCH PATTERN TACKER
ELECTRONIC LOCKSTITCH BUTTON SEWER
SERVICE MANUAL

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Table of Contents

Troubleshooting

   Also See for Brother KE-430B

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   Summary of Contents for Brother KE-430B

  • Page 1 KE-430B, 430C, 431B, 431C SERVICE MANUAL KE-432B, 432C, 433B KE-434B, 434C, 435B, 435C KE-436B, 436C, 484C BE-438B, 438C Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. ELECTRONIC LOCKSTITCH BAR TACKER...
  • Page 2: Safety Instructions

    This service manual is intended for KE-430B series, KE-430C series, BE-438B, BE-438C, KE-484C; be sure to read the KE-430B series, KE-430C series, BE-438B, BE-438C, KE-484C instruction manual before this manual. Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you start maintenance.
  • Page 3 Furthermore, do not excessively bend the cords or secure them too firmly Contact your Brother dealer or a qualified electrician with staples, otherwise there is the danger that fire or for any electrical work that may need to be done.
  • Page 4: Maintenance And Inspection

    Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the Hold the machine head with both hands when tilting it electrical system.
  • Page 5 The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. Safety devices...
  • Page 6: Table Of Contents

    3-4. Work clamp arm mechanism (KE-433B) ..4-15. Work clamp arm mechanism 3-5. Work clamp arm mechanism (KE-434B, 434C, (KE-430B, 430C, 431B, 431C) ......435B, 435C, 436B, 436C, 484C)......4-16. Work clamp arm mechanism 3-6. Work clamp arm (BE-438B, 438C) .....
  • Page 7 5-30. Adjustment of air pressure (Pneumatic 5-7. Adjusting the work clamp lift amount specifications)........... 132 (KE-430B, 430C, 431B, 431C, 433B) ....104 5-31. Adjustment of inner clamping device ....132 5-8. Adjusting the work clamp lift amount (KE-432B, 432C)..........104 6.
  • Page 8: Specifications

    Three-phase 400W induction motor Machine head: 52 kg, Operation panel: 0.6 kg, Weights Control box: 9 - 19 kg (depending on destination) Single-phase 110, 220 - 230, 240V Power source 3-phase 220-230, 380, 400V Maximum electric power consumption; 600VA KE-430B, 430C series...
  • Page 9 Single-phase 110, 220 - 230, 240V Power source 3-phase 220-230, 380, 400V Maximum electric power consumption; 600VA * Up to 100 patterns can be added. Total number of stitches of stored data which can be added is within 10,000. KE-430B, 430C series...
  • Page 10 Three-phase 400W induction motor Machine head: 52 kg, Operation panel: 0.6 kg, Weights Control box: 9 - 19 kg (depending on destination) Single-phase 110, 220 - 230, 240V Power source 3-phase 220-230, 380, 400V Maximum electric power consumption; 600VA KE-430B, 430C series...
  • Page 11 Single-phase 110, 220 - 230, 240V Power source 3-phase 220-230, 380, 400V Maximum electric power consumption; 600VA * Up to 100 patterns can be added. Total number of stitches of stored data which can be added is within 10,000. KE-430B, 430C series...
  • Page 12: Standard Thread Tension

    1. SPECIFICATIONS 1-2. Standard thread tension [KE-430B, 430C, 431B, 431C, 432B, 432C, 433B, 434B, 434C, 435B, 435C, 436B, 436C] Medium materials Heavy materials (Denim) Knitted materials (Ordinary materials) Standard hook Large hook Standard hook Large hook Standard hook #50 or #30 or ←...
  • Page 13 Measure the value when the thread take-up spring starts to extend. 3566Q 3567Q * When the spring height (stroke) is great or the spring tension is insufficient, it may cause the thread end length to vary after thread trimming. KE-430B, 430C series...
  • Page 14: Mechanical Descriptions

    <3> Stepping foot connecting rod 3. Thread take-up crank <4> Stepping foot arm 4. Needle bar crank <5> Stepping link assy 5. Needle bar connecting rod <6> Presser bar lifter 6. Needle bar clamp <7> Stepping foot 7. Needle bar 3240Q KE-430B, 430C series...
  • Page 15 2. MECHANICAL DESCRIPTIONS KE-484C 1. Pulley 2. Upper shaft 3. Thread take-up crank 4. Needle bar crank 5. Needle bar connecting rod 6. Needle bar clamp 7. Needle bar 3241Q KE-430B, 430C series...
  • Page 16: Lower Shaft And Shuttle Race Mechanisms

    3242Q Q KE-484C 1. Pulley 2. Upper shaft 3. Timing pulley 4. Timing belt 5. Tension pulley arm 6. Lower shaft timing pulley 7. Lower shaft 8. Lower gear 9. Rotary hook shaft 10.Treble hook assy 3243Q 3243Q KE-430B, 430C series...
  • Page 17: Work Clamp Lifter Mechanism

    8. Work clamp lifter lever 8. Button clamp lifting lever 9. Presser adjusting plate assy 9. Button clamp holder hook assy 10. Button clamp holder shaft 10. Button clamp holder shaft 11. Work clamp 11. Button clamp 3266Q 3267Q KE-430B, 430C series...
  • Page 18 2. MECHANICAL DESCRIPTIONS 3245Q Pneumatic specifications 1. Air cylinder 2. Work clamp arm lever shaft 3. Work clamp arm lever 4. Work clamp KE-430B, 430C series...
  • Page 19: Work Clamp Open-close Mechanism

    2-4. Work clamp open-close mechanism (KE-432B, 432C) 1. Solenoid assy 2. OY solenoid pin 3. Sensor plate 3262Q 4. Work clamp carrier rod assy 5. Lever 6. Roller 7. Work clamp carrier plate 8. Work clamp guide plate 9. Screw 10.Work clamp KE-430B, 430C series...
  • Page 20: Thread Wiper Mechanism

    6. Thread wiper rod assy 7. Thread wiper arm assy 8. Thread wiper 3247Q Q Solenoid type thread wiper 1. Thread wiper solenoid 2. Thread wiper connecting rod assy 3. Thread wiper arm assy 4. Thread wiper KE-430B, 430C series...
  • Page 21 2. Thread wiper connecting rod assy 3. Thread wiper arm assy 4. Thread wiper 3248Q Q KE-484C 1. Thread wiper cylinder 2. Thread wiper connecting rod lever 3. Thread wiper connecting rod 4. Thread wiper arm assy 5. Thread wiper 3249Q 3249Q KE-430B, 430C series...
  • Page 22: Feed Mechanism

    2. MECHANICAL DESCRIPTIONS 2-6. Feed mechanism Sewing patterns are created through combinations of X and Y movements. KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C X direction 1. Pulse motor, X 2. Coupling hub, 6.35 3. Coupling spacer 4. Coupling hub, 8 5.
  • Page 23 Y direction 1. Pulse motor, Y 2. Coupling hub, 8 3. Coupling spacer 4. Coupling hub, 8 5. Feed cam, Y 3253Q 6. Feed cam roller 7. Y-feed lever 8. Tack width regulator block assy 9. Feed bracket KE-430B, 430C series...
  • Page 24: Thread Trimmer Mechanism

    3. Thread driving lever 4. Thread trimmer roller 3254Q 5. Thread trimmer cam 6. Thread trimmer rod 7. Thread trimmer lever 8. Connecting rod lever assy 9. Thread trimmer connecting rod 10. Movable knife 11. Fixed knife KE-430B, 430C series...
  • Page 25 4. Thread trimmer roller 5. Thread trimmer cam 6. Thread trimmer rod 7. Thread trimmer lever 8. Thread trimmer rod, L 9. Thread trimmer connecting rod 10. Movable knife 11. Thread trimmer cylinder 12. Extension rod 13. Fixed knife 3255Q KE-430B, 430C series...
  • Page 26: Thread Nipper Mechanism

    8. Tension release lever, U 3. Thread driving lever 9. Tension release rod assy 4. Tension release driving lever 10. Tension release lever 5. Lower thread retainer collar 11. Tension release stud 12. Tension release pin 6. Thread trimmer cam KE-430B, 430C series...
  • Page 27 2. MECHANICAL DESCRIPTIONS KE-484C 1. Tension release cylinder 2. Tension release pin push lever 3. Tension release pin, L 4. Tension release pin 3258Q KE-430B, 430C series...
  • Page 28: Thread Take-up Mechanism

    2. MECHANICAL DESCRIPTIONS 2-9. Thread take-up mechanism 3259Q Stepping foot specifications 1. Thread take-up solenoid 2. Solenoid joint 3. Thread take-up lever crank 4. Thread take-up lever 3260Q 3261Q KE-484C 1. Thread take-up cylinder 2. Thread take-up lever KE-430B, 430C series...
  • Page 29: Disassembly

    Keep the oil out of the reach of children. Disassemble each part in order of the numbers. 3-1 3269Q Covers KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C 1. Top cover 2. Belt cover 3. Frame side cover 4. Bed cover, LF 5.
  • Page 30 6. Bed cover, R 7. Eye guard assy 8. Bolts [2 pcs] 9. Face plate assy 10. Shuttle race cover assy 11. Auxiliary plate supports [2 pcs] 3269Q 12. Needle plate auxiliary plate 13. Auxiliary plate supports [4 pcs] KE-430B, 430C series...
  • Page 31: Work Clamp Arm Mechanism

    3. DISASSEMBLY 3-2. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C) Be careful not to drop these three bearing balls when removing the work clamp arm assembly. 1. Set screw 2. Needle 3. Needle bar thread guide 4. Bolts [2 pcs] 5.
  • Page 32: Work Clamp Arm Mechanism

    12. Screws [2 pcs] 21. Flat screws [2 pcs] Compression spring 13. Feed plate 22. Screws [2 pcs] [Push upward and remove horizontally] 14. Rubber cap 23. Needle plate 6. Set screws [2 pcs: Loosen] 15. Set screw [Loosen] KE-430B, 430C series...
  • Page 33: Work Clamp Arm Mechanism (ke-433b)

    23. X feed cover 24. Y feed cover Be careful not to drop the two bearing balls 25. Flat screws [2 pcs] when removing the feed bracket guide shaft 26. Screws [2 pcs] assembly. 27. Needle plate 3276Q KE-430B, 430C series...
  • Page 34: Work Clamp Arm Mechanism

    3. Needle bar thread guide 4. Bolts [2 pcs: pneumatic spec. only] 5. Cylinder support [pneumatic spec. only] 6. Bolts [2 pcs] 7. Work clamp arm assy 8. Bolts [2 pcs] 9. Feed plate 3277Q 10. Feed bracket cover KE-430B, 430C series...
  • Page 35 15. Spacers [2 pcs] 16. Screws [2 pcs] 17. Flat screws [2 pcs] 18. Feed bracket guide plate, R 19. Feed bracket assy 20. X-feed lever cover 21. Flat screws [2 pcs] 22. Screws [2 pcs] 23. Needle plate KE-430B, 430C series...
  • Page 36: Work Clamp Arm (be-438b, 438c)

    20. Flat screws [2 pcs] Compression spring 12. Feed plate 21. Screws [2 pcs] [Push upward and remove horizontally] 13. Rubber cap 22. Needle plate 5. Set screws [2 pcs: Loosen] 14. Set screw [Loosen] 6. Button clamp holder shaft KE-430B, 430C series...
  • Page 37: Shuttle Hook Mechanism

    2. Shuttle race base setting claw [Open to right and left] 3. Shuttle race base 4. Shuttle hook 3283Q KE-484C 1. Bobbin case assy 2. Screw 3. Hook stopper setting base 4. Set screw [Loosen] 5. Treble hook assy KE-430B, 430C series...
  • Page 38: Needle Bar Mechanism

    Do not remove the needle bar guide if possible to 16. Thread take-up lever prevent the machine from overheating due to needle 17. Rubber caps [2 pcs] bar rubbing. 18. Screws [2 pcs] 19. Needle bar guide KE-430B, 430C series...
  • Page 39: Stepping Foot Mechanism

    11. Presser bar 12. Screws [2 pcs] 13. Stepping link assy 14. Presser bar lifter 15. Nut 16. Feed lifter lever shaft 17. Bolt [Loosen] 18. Stepping foot arm, R 19. Stepping foot arm, F [Pull out] KE-430B, 430C series...
  • Page 40: (ke-435b, 435c, 436b, 436c)

    19. Set screws [2 pcs: Loosen] 20. Timing pulley assy, U 21. Screws [2 pcs] 3289Q 22. Synchronizer assy 23. Upper shaft 24. Thrust washer 25. Bobbin winder pulley <25> Stepping foot connecting rod 26. Thread trimmer cam KE-430B, 430C series...
  • Page 41 21. Nut [Loosen] 9. Frame side cover 33. Thread trimmer cam 10. Setting plate packing 22. Bolt [Loosen] 34. U-timing pulley, F 11. Nut 23. Bolts [3 pcs] 35. U-timing belt, F 12. Plain washer 24. Motor bracket KE-430B, 430C series...
  • Page 42: Lower Shaft Mechanism

    [Pull out from the rear of the machine] 6. Set screws [2 pcs: Loosen] 13. Set screw collar 7. Lower shaft assy 14. Rock gear [Pull out from the rear of the machine] 15. Crank rod (Lower part) 8. Set screw collar KE-430B, 430C series...
  • Page 43 6. Lower shaft gear spacer 7. Thrust bearing 8. Set screw [Loosen] 9. Wick [Untie the knot] 10. Lower shaft [Pull out from the rear of the machine] 11. Lower shaft timing pulley 12. U-timing belt, F 3295Q KE-430B, 430C series...
  • Page 44: Feed Mechanism (1)

    3. DISASSEMBLY 3-12. Feed mechanism (1) KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C Tilt the machine head. Return the machine head to its original position. 3296Q If the tack width feed lever shaft cannot be removed, remove the retaining ring.
  • Page 45 7. Y-feed lever assy [Pull upward] 8. Thrust washer 9. X-feed lever assy [Pull upward] 10. Screw 11. Y-sensor setting plate 12. Screw 13. X-sensor setting base 3300Q 14. Screws [3 pcs] 15. Cord clamps [3 pcs] KE-430B, 430C series...
  • Page 46: Feed Mechanism (2)

    3. DISASSEMBLY 3-13. Feed mechanism (2) 3301Q KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C 1. Bolts [4 pcs] 2. Pulse motor assy, X [Disconnect the harness] 3. Bolts [4 pcs] 4. Pulse motor assy, Y [Disconnect the harness] 5.
  • Page 47 19. Ball bearing [X side only] 8. Set screw collar 20. Ball bearing 9. PM bracket, Y 21. Cam shaft 10. Ball bearing 22. Set screws [2 pcs: Loosen] 11. Screws [2 pcs] 23. Coupling hub, 8 12. Y-feed cam bracket KE-430B, 430C series...
  • Page 48: Work Clamp Lifter Mechanism

    3. DISASSEMBLY 3-14. Work clamp lifter mechanism (Solenoid specifications) KE-430B, 431B, 433B, 434B KE-430C, 431C, 434C 1. Springs [2 pcs] 2. Screws [2 pcs] 3. Guide 4. Snap pins [2 pcs] 5. Rubber cap 6. Link shaft, D [Pull out] 7.
  • Page 49 [BE-438B, 438C] 3309Q 18. Retaining ring [BE-438B, 438C] 19. Work clamp lifting rod <BE-438B, 438C> [Pull downward] 20. Rubber caps [2 pcs] 21. Screws [2 pcs] 22. Screws [4 pcs] 23. Presser solenoid assy [Disconnect the harness] KE-430B, 430C series...
  • Page 50 3. DISASSEMBLY 3-15. Stepping foot lifter mechanism (KE-435B, 435C, 436B, 436C) 3310Q 1. Retaining ring 2. Plain washer 3. Screws [4 pcs] 4. Air cylinder setting plate [Pull upward after disconnecting the air tubes] KE-430B, 430C series...
  • Page 51: Thread Wiper Mechanism

    7. Set screw [Loosen] remove them. 8. Thread wiper shaft 9. Retaining ring 10. Tension release lever spring 11. Retaining ring 12. Thread wiper rod assy 13. Thread wiper driving lever KE-430B, 430C series...
  • Page 52 2. Lifting lever 3. Plunger pin 4. Bolts [2 pcs] 5. Solenoid box assy [Disconnect the harness] 6. Screws [2 pcs] 7. Thread wiper connecting rod assy 8. Set screw [Loosen] 9. Thread wiper arm assy [Pull downward] KE-430B, 430C series...
  • Page 53 4. Set screw [Loosen] 5. Thread wiper connecting rod assy KE-484C 3315Q 1. Screw 2. Bolts with washers [2 pcs] 3. Bolts [2 pcs] 4. Cylinder box [Disconnect the harness] 5. Set screw [Loosen] 6. Thread wiper connecting rod KE-430B, 430C series...
  • Page 54: Thread Nipper Mechanism

    14. Lifting lever 6. Shoulder screw 15. Screw [KE-434B, 434C Pneumatic spec.] 7. Tension release rod assy 16. Tension release rod [KE-434B, 434C Pneumatic spec.] 8. Driving lever push lever 17. Presser bar lifter crank 9. Set screw [Loosen] KE-430B, 430C series...
  • Page 55 1. Set screw 2. Thread tension assy [Pull out] 3. Tension release pin 4. Tension release pin, L 5. Tension release cylinder assy 6. Rubber cap 7. Set screw [Loosen] 8. Lever shaft 9. Tension release pin push lever KE-430B, 430C series...
  • Page 56: Thread Take-up Mechanism

    5. Solenoid joint 6. Screw 7. Spring washer 8. Plain washer 9. Nut 10. Shoulder screws [2 pcs] 11. Thread take-up lever 12. Retaining ring 3319Q 13. Thread take-up lever crank 14. Plain washer 3320Q Stepping foot specifications KE-430B, 430C series...
  • Page 57 3. DISASSEMBLY 3321Q KE-484C 1. Pin 2. Screws [2 pcs] 3. Setting plate 4. Shoulder screws [2 pcs] 5. Thread take-up lever KE-430B, 430C series...
  • Page 58: Thread Trimmer Mechanism

    14. Nuts [2 pcs] 15. Shoulder screws [2 pcs] 16. Washers [2 pcs] 17. Set screw [Loosen] 18. Thread trimmer lever shaft 19. Thread trimmer lever 20. Connecting rod lever assy 21. Thread driving lever assy 3323Q KE-430B, 430C series...
  • Page 59 14. Nuts [2 pcs] 15. Shoulder screws [2 pcs] 16. Washers [2 pcs] 17. Set screw [Loosen] 18. Thread trimmer lever shaft 19. Thread trimmer lever 20. Thread trimmer rod, L 3325Q 21. Thread driving lever assy KE-430B, 430C series...
  • Page 60 3. DISASSEMBLY KE-430B, 430C series...
  • Page 61: Assembly

    18. Shoulder screw 19. Nut 20. Washers [2 pcs] 21. Shoulder screw Tighten the set screw on the screw flat while lightly 22. Nut pressing the thread trimmer lever shaft upward. 23. Spring hook 3330Q 24. Spring KE-430B, 430C series...
  • Page 62 19. Washers [2 pcs] 20. Shoulder screw 21. Nut 22. Thread trimmer cylinder Tighten the set screw on the screw flat while lightly 23. Bolts [2 pcs] pressing the thread trimmer lever shaft upward. 24. Spring 3333Q KE-430B, 430C series...
  • Page 63: Thread Nipper Mechanism

    3. Screw with washer 4. Work clamp lever lifter shaft 5. Tension release lever 6. Collar 7. Tension release rod assy 8. Shoulder screw 9. Driving lever push lever 10. Tension release lever, U 11. Shoulder screw KE-430B, 430C series...
  • Page 64 8. Collar 19. Tension release pin 9. Retaining ring 20. Thread tension assy Tighten the set screw while lightly 10. Set screw 21. Set screw pressing the work clamp lever lifter 11. Tension release lever spring shaft. KE-430B, 430C series...
  • Page 65 3. Set screw 4. Rubber cap 5. Tension release cylinder assy 6. Tension release pin, L 7. Tension release pin Apply sealant (Threebond 1212 or similar) to the thread section. 8. Thread tension assy 9. Set screw 3338Q KE-430B, 430C series...
  • Page 66: Thread Wiper Mechanism

    14. Thread wiper 15. Plain washer 3341Q 16. Screw 17. Tension release stud Adjust the thread take-up spring height while 18. Tension release pin referring to “1-2. Standard thread tension”. 19. Thread tension assy 20. Set screw KE-430B, 430C series...
  • Page 67 2. Set screw [Temporarily tighten] 3. Thread wiper connecting rod assy 4. Screws [2 pcs] 5. Solenoid box assy 6. Washers [2 pcs] 7. Bolts [2 pcs] 8. Plunger pin 9. Lifting lever 10. Screw with washer KE-430B, 430C series...
  • Page 68 7. Bolts [2 pcs: Install to face plate] smoothly. KE-484C 3344Q 1. Thread wiper connecting rod 2. Set screw [Temporarily tighten] 3. Cylinder box 4. Washers [2 pcs] 5. Bolts [2 pcs] 6. Bolts with washers [2 pcs] 7. Screw KE-430B, 430C series...
  • Page 69: Thread Take-up Mechanism

    11. Set screws [2 pcs] make fine adjustments to the 12. Spring position of the solenoid setting 13. Solenoid setting plate plate until the thread take-up Seen from the front 14. Screws [2 pcs] lever operates smoothly. KE-430B, 430C series...
  • Page 70 11. Set screws [2 pcs] make fine adjustments to the 12. Spring position of the solenoid setting 13. Solenoid setting plate plate until the thread take-up Seen from above 14. Screws [2 pcs] lever operates smoothly. KE-430B, 430C series...
  • Page 71 4. ASSEMBLY 3350Q KE-484C 1. Thread take-up lever 2. Shoulder screws [2 pcs] 3. Setting plate 4. Screws [2 pcs] 5. Pin 6. Retaining ring KE-430B, 430C series...
  • Page 72: (solenoid Specifications)

    4. ASSEMBLY 4-5. Work clamp lifter mechanism (Solenoid specifications) When assembling, apply grease to the required places while referring to “4-5-1. Applying grease”. KE-430B, 431B, 433B, 434B KE-430C, 431C, 434C Secure link shaft, A using the set screw so that link, B (8) is centered in the bush.
  • Page 73 13. Rubber caps [2 pcs] 14. Link shaft, D 15. Snap pins [2 pcs] 16. Guide 17. Screws [2 pcs] 18. Springs [2 pcs: Hook onto link shaft B and the grooved pins (18)] 19. Oil cap 20. Rubber cap KE-430B, 430C series...
  • Page 74: Ke-432b, 432c

    10. Link shaft, C [Pass through link B (10) and the work clamp plate] 11. Snap pins [2 pcs: Attach to both ends of link shaft C] 12. Presser solenoid assy [Insert from above the arm] 13. Screws [2 pcs] 14. Screws [4 pcs] 15. Rubber caps [2 pcs] KE-430B, 430C series...
  • Page 75 20. Springs [2 pcs: Hook onto link shaft B and the grooved pins (20)] 21. Oil cap 22. Rubber cap 23. Work clamp lifter lever[KE-432B, 432C] Button clamp lifting lever[BE-438B, 438C] 24. Button clamp lever shaft 25. Set screw KE-430B, 430C series...
  • Page 76: Applying Grease

    6. Forked portion of the plunger [10] where link assy, C [6] is fitted 7. Outer and inner surfaces of spherical bush [11] to be attached to link assy, C [6] 8. Shaft of work clamp plate (work clamp lifting rod: KE-432B/432C, BE-438B/438C) [3] KE-430B, 430C series...
  • Page 77: Feed Mechanism (1)

    4. ASSEMBLY 4-6. Feed mechanism (1) KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C Feed cams X and Y both have index marks. Check these when using. 3358Q Assembly steps of the feed mechanism are the same for X and Y directions.
  • Page 78 * Make sure that the harness faces correctly. 15. Pulse motor assy, X 16. Bolts [4 pcs] 3365Q 3365Q 17. Pulse motor assy, Y 18. Bolts [4 pcs] KE-430B, 430C series...
  • Page 79 4. Ball bearing [X: 2 pcs, Y: 1 pc] motor shaft protrudes from 5. Cam shaft the edge by 2.5 mm. 6. Feed cam 7. Set screws [2 pcs] 8. Coupling hub, 8 9. Set screws [2 pcs] KE-430B, 430C series...
  • Page 80 17. Screws [2 pcs] 3371Q 18. Ball bearing 19. Coupling spacer 20. Pulse motor assy, Y 21. PM bracket, Y 22. Bolts [4 pcs: 3 pcs for KE-484C] 23. Set screw collar 24. Set screws [2 pcs] KE-430B, 430C series...
  • Page 81: Feed Mechanism (2)

    4. ASSEMBLY 4-7. Feed mechanism (2) Install home posi- KE-430B, 431B, 432B, 433B, BE-438B tion sensors X and KE-430C, 431C, 432C, BE-438C Y so that there is a gap of 0.5–0.9 mm between the sen- sors and the feed Feed home home position dog.
  • Page 82 12. Screw set screws. 13. Y-sensor setting plate 14. Screw 15. Cord clamps [3 pcs] 16. Screws [3 pcs] 17. Wick [Insert into oil supply hole] 18. Wick [Insert into oil supply hole] 3376Q KE-430B, 430C series...
  • Page 83: Upper Shaft Mechanism

    10. Synchronizer assy assembly U with the screw stop position and tighten the set 11. Screws [2 pcs] screw at that position. 12. Timing pulley assy, U 3383Q 13. Set screws [2 pcs] KE-430B, 430C series...
  • Page 84 14. Adjusting screw 5. Bobbin winder pulley 15. Nut 6. Thrust washer 16. Adjusting screw 7. Thread take-up crank 17. Nut 8. Screw 18. Plain washer 9. Set screw 19. Nut 10. Set screws [2 pcs] 3385Q KE-430B, 430C series...
  • Page 85 U with the screw stop position and tighten the set screw at that position. 3383Q KE-430B, 430C series...
  • Page 86 A is at its lowest point. Work clamp lifter lever Presser bar bush 3389Q 1. Stepping link, A 2. Plain washer 3. Retaining ring 4. Air cylinder setting plate 5. Screws [4 pcs] KE-430B, 430C series...
  • Page 87 Set the presser adjusting screw so that the distance 22. Finger guard from its top to the top of the machine head is 23. Plain washers [2 pcs] approximately 32 mm, and then secure the nut. 24. Screw KE-430B, 430C series...
  • Page 88 5. With the presser bar (10) at its lowest position, secure the presser bar clamp (11) with the screw (12) so that the distance from the bottom edge of the presser bar and the top of the needle plate is 23 mm. KE-430B, 430C series...
  • Page 89: Needle Bar Mechanism

    15. Oil cap position, and then set the cut section so that it is facing 16. Rubber caps [4 pcs] forward and tighten the screw. 17. Wick [Insert into oil supply 3395Q hole] KE-430B, 430C series...
  • Page 90: Lower Shaft Mechanism

    7. Set screws [2 pcs] 8. Retaining ring 9. Driver 3398Q 10. Bolt [Temporarily tighten] 11. Crank rod (Lower part) [Insert into upper shaft crank] 12. Crank rod (Upper part) [Align the mating mark] 13. Screws [2 pcs] KE-430B, 430C series...
  • Page 91 14. Set screws [2 pcs] 15. Wick [Pass through the rock gear shaft and make a knot] 16. Upper shaft timing belt 17. Motor bracket 18. Bolts [3 pcs: Temporarily tighten] 19. Bolt 20. Nut 21. Motor connector KE-430B, 430C series...
  • Page 92 9. Set screw collar 10. Set screws [2 pcs] 11. Lower gear 12. Set screw 13. Upper shaft timing belt 14. Motor bracket 15. Bolts [3 pcs: Temporarily tighten] 16. Bolt 17. Nut 18. Motor connector 3404Q KE-430B, 430C series...
  • Page 93: Thread Trimmer Mechanism (2)

    1. Thread connecting rod 2. Needle plate 3. Flat screws [2 pcs] 4. Screws [2 pcs] 5. Thread trimmer solenoid 3408Q 6. Screws [2 pcs] After installing, carry out the steps in “5-19. Adjusting the movable knife”. KE-430B, 430C series...
  • Page 94: Shuttle Hook Mechanism

    7. Bobbin case assy 8. Felt holder 9. Support [Return to original position] 3419Q <KE-430B series, BE-438B> 2) Press the felt and the wick gently as shown in 3447Q the illustration. 1) Place the felt support as shown in the Wick illustration so as not to clamp the felt.
  • Page 95 6. Hook stopper setting base the needle center line. Then tighten the set screw to adjust the 7. Screw clearance between the needle and the tip of the rotary hook to 8. Bobbin 0.01–0.08 mm. 9. Bobbin case assy KE-430B, 430C series...
  • Page 96 4. ASSEMBLY 4-15. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C) Align with the screw stop and push down Be careful not to drop these two ball from above while tightening the set screw. bearings when installing the feed bracket assembly.
  • Page 97 After installing, carry out test feeding and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the button clamp holder support and feed plate. KE-430B, 430C series...
  • Page 98: Work Clamp Arm Mechanism (ke-433b)

    After installing, carry out test feeding and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm assembly and feed plate. KE-430B, 430C series...
  • Page 99: Work Clamp Arm Mechanism (ke-434b, 434c, 435b, 435c, 436b, 436c, 484c)

    Y-feed 4. Screws [2 pcs] lever. 5. X-feed lever cover 6. Spacers [2 pcs] 7. Retainer assys [2 pcs] 8. Tack length regulator block assy 9. Set screw 10. Rubber cap KE-430B, 430C series...
  • Page 100 After installing, carry out test feeding and check that the needle hole is inside the work clamp and the feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm assembly and feed plate. KE-430B, 430C series...
  • Page 101 Carry out the adjustment in “5-24. Adjusting the home Compression spring position” before installing the feed plate. 3436Q After installing, check that the needle passes into the button hole without touching the button. (Refer to “5-14. Adjusting the position of the button holder”.) KE-430B, 430C series...
  • Page 102 1. Sliding portion of the work clamp (1) (Apply small amount of grease.) 2. Sliding portion of the work clamp arm lever shaft (2) and the work clamp arm levers R and L (3) [KE-430B, 430C, 433B, 434B/434C solenoid specifications]...
  • Page 103 4. ASSEMBLY [KE-432B, 432C] Apply grease to the portions indicated by the arrows. 3440Q [BE-438B, 438C] Apply grease to the portions indicated by the arrows. 3441Q KE-430B, 430C series...
  • Page 104: Covers

    4. ASSEMBLY 4-21. Covers KE-430B, 431B, 432B, 433B, BE-438B KE-430C, 431C, 432C, BE-438C Provisionally tighten this screw, and then fully tighten it after installing the belt cover. 3442Q 1. Shuttle race cover assy 2. Plain washers [2 pcs] 3. Wave washers [2 pcs] 4.
  • Page 105 22. Bolts [2 pcs] 23. Bed cover, LF 24. Screws [4 pcs] 25. Frame side cover 26. Screws [4 pcs] 27. Top cover 28. Plain washers [3 pcs] 29. Screws [3 pcs] 30. Belt cover 3446Q 31. Screws [2 pcs] KE-430B, 430C series...
  • Page 106: Adjustment

    Ask your Brother dealer or a qualified electrician to carry out any maintenance and Hold the machine head with both hands when inspection of the electrical system. tilting it back or returning it to its original Turn off the power switch and disconnect the position.
  • Page 107: Adjusting The Needle Bar Lift Amount

    5-2. Adjusting the needle bar lift amount 3413Q Needle center line 0135Q <KE-430C series, BE-438C> <KE-484C> 2464Q 3200Q <KE-430B series, BE-438B> Wick Support Felt Felt Felt holder When returning the felt support, place it as shown in Turn the support in the...
  • Page 108: Adjusting The Driver Needle Guard

    (1) is not touching the needle, the tip of the inner rotary hook will obstruct the needle, resulting in an excessively high amount of friction. 5-4. Adjusting the needle clearance <KE-430B series, KE-430C series, BE-438B, 438C> 0.01 - 0.08 mm 0138Q 2557Q Turn the machine pulley to align the tip of the rotary hook with the needle center line.
  • Page 109: Adjusting The Shuttle Race Thread Guide

    2. While pushing the shuttle race thread guide (4) in the direction of the arrow, set the needle groove to the center position. Note: If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur. KE-430B, 430C series...
  • Page 110: Adjusting The Clearance Between The Shuttle Hook And Bobbin Case Holder Position Bracket (ke-484c)

    3453Q Loosen the screw (3) and move the hook stopper setting base (4) to adjust so that the tip of the bobbin case holder position bracket (1) is approximately 0.8 mm away from the needle drop surface. KE-430B, 430C series...
  • Page 111: Adjusting The Work Clamp Lift Amount

    5. ADJUSTMENT 5-7. Adjusting the work clamp lift amount (KE-430B, 430C, 431B, 431C, 433B) The maximum work clamp lift amount is 17 mm from the top of the needle plate. The lift amount for each model is adjusted as shown in the table at the time of shipment.
  • Page 112: Adjusting The Work Clamp Lift Amount

    Apply grease to the sliding part of the work clamp (1) (grease is already applied at the time of shipment), and check that the movement becomes easier. In addition, check that the air tubes are routed correctly. KE-430B, 430C series...
  • Page 113: Adjusting The Button Clamp Lift Amount

    Remove the button clamp presser spring (1), loosen the screw (2) and adjust the button clamp holder hook (3) by moving it up and down. * If the button clamp cannot be raised or lowered, error code “E-61” or “E-63” will be displayed. KE-430B, 430C series...
  • Page 114: Work Clamp Pressure Adjustment

    Loosen the adjusting nut (1) and turn the adjusting nut (2) to the point where it is just tight enough that the material will not slip out of place when it is slightly pulled (keep pressure as slight as possible). 2667Q KE-430B, 430C series...
  • Page 115: Work Clamp Closing-distance Adjustment

    3. Loosen the nut (8) and move the work clamp so that the closing distance becomes 3 - 4 mm when the work clamp is in the lowered position. Then, push the nut (8) all the way in the direction indicated by the arrow, and tighten it. KE-430B, 430C series...
  • Page 116: Adjusting The Position Of The Button Holder

    (1). If the needle is not aligned with the center of the needle hole, remove cap (3), loosen screw (4), and turn the work camp (presser bar) to adjust. 3563Q KE-430B, 430C series...
  • Page 117: Changing The Work Clamp Lift

    <If vertical movement of the work clamp is not required> 1. Remove the face plate (1). 2. Remove the shoulder screw (2) and re-attach the stepping link assembly (3) to the upper screw hole (a) of the stepping work clamp arm F (13). 3455Q 3456Q KE-430B, 430C series...
  • Page 118: Adjusting The Thread Wiper

    3. Remove the rubber cap (7) and loosen the set screw (8) to adjust the thread wiper so that it is approximately 20 mm from the needle when it is at the standby position. KE-430B, 430C series...
  • Page 119 (1) is pushed up and the thread wiper (2) has passed below the needle. 2. Loosen the two bolts (5) and move the solenoid cover (6) up or down so that the thread wiper is approximately 35 mm from the needle when it is at the standby position. KE-430B, 430C series...
  • Page 120 2. Loosen the two bolts (5) and move the cylinder cover (6) up or down so that the thread wiper is approximately 38 mm from the needle when it is at the standby position. KE-430B, 430C series...
  • Page 121: Adjusting The Thread Take-up Amount

    5. ADJUSTMENT 5-18. Adjusting the thread take-up amount [KE-430B, 430C, 431B, 431C, 432B, 432C, 433B, 434B, 434C, BE-438B, 438C] At the time of shipment from the factory, the thread take-up amount (stroke) of the thread take-up lever (1) is adjusted as shown in the table below. You may need to adjust this setting depending on the sewing conditions to prevent the thread from pulling out at the sewing start.
  • Page 122 Furthermore, if it is larger than necessary, the needle thread trailing length may become too long and the underside of the article being sewn may become untidy. KE-430B, 430C series...
  • Page 123: Adjusting The Movable Knife

    5. Loosen the nut (6) and move the connecting rod lever (7) to the left or right to adjust so that the V section A is aligned with the index mark B on the needle plate when in this condition (the procedure 3.) and the movable knife (5) is pushed to the machine pulley side so that there is no play. KE-430B, 430C series...
  • Page 124 Loosen the nut (2) and move the connecting rod lever (3) to the left or right to adjust so that the V section A is aligned with the index mark B on the needle plate when the sewing machine in the stopped position and the movable knife (1) is pushed to the machine pulley side so that there is no play. KE-430B, 430C series...
  • Page 125 5. ADJUSTMENT 5-19-1. Replacing the movable knife and fixed knife (KE-430B, 430C, 431B, 431C, 432B, 432C, 433B, BE-438B, 438C) 2564Q 2466Q 1. Open the large shuttle hook cover, remove the screws (1) and (2), and then remove the feed plate (3).
  • Page 126 5. Install the fixed knife (9) at a distance of 0.5 mm from the needle hole plate (12). 6. Place the thread trimming connecting rod (6) onto the connecting rod lever pin (7), and then install to the needle plate(5). KE-430B, 430C series...
  • Page 127 6. Install the fixed knife (11) at a distance of 0.5 mm from the needle hole plate (14). 7. Place the thread trimming connecting rod (8) onto the connecting rod lever pin (9), and then install to the needle plate(5). KE-430B, 430C series...
  • Page 128 D. Turn the movable knife (in the direction of the arrow) while the screw is still loosened. Repeat above steps A , B, C and D four or five times to maintain the cutting performance of the knife. KE-430B, 430C series...
  • Page 129: Adjusting The Position Of The Thread Trimming Link Mechanism

    5. Loosen the two screws (12) and adjust the position of the thread trimmer solenoid (9) so that the clearance between the thread driving lever (2) and the driving lever stopper (3) is 0.5 mm when the plunger (10) of the thread trimmer solenoid (9) is pushed in as far as it will go. KE-430B, 430C series...
  • Page 130: Adjusting The Backlash

    1. Loosen the set screw (1), and move the lower shaft timing pulley (2) to the left and right so that the pulley can rotate easily. 2. Turn the lower shaft (3) and adjust the play in the rotary hook tip to 0.05–0.12 mm, and then tighten the set screw (1). KE-430B, 430C series...
  • Page 131: Adjusting The Presser Solenoid Position

    3. Loosen the four screws (5), set the presser solenoid (6) so that it is 110 ± 0.2 mm from the edge of the arm, and then tighten the screws (4) and (5) in that order. Note: If this adjustment is not done correctly, the work clamp may not lift or drop and error E-60 may be displayed. KE-430B, 430C series...
  • Page 132: Adjusting The Sensor Perceive Plate Position

    6. Loosen the bolt (11) and move the sensor perceive plate (12) forward or back to adjust so that the work clamp signal is ON when the link C assembly (10) of the work clamp lifter mechanism is pushed so that the wiper is at the position shown in the illustration. KE-430B, 430C series...
  • Page 133: Adjusting The Home Position

    5. ADJUSTMENT 5-24. Adjusting the home position KE-430B, KE-430C, KE-431B, KE-431C, KE-432B, KE-432C, KE-433B, BE-438B, BE-438C… Refer to [A]. KE-434B, KE-434C, KE-435B, KE-435C, KE-484C… Refer to [B]. KE-436B, KE-436C… Refer to [C]. [B], [C] 3485Q 3486Q 1. Install the home position standard plate (1) to the feed bracket (2) with the two screws (3).
  • Page 134 6. Turn off the power switch. 7. Loosen the screws (8), and then adjust by turning the home position dog (9). (Refer to the next page.) 8. After adjusting, turn on the power switch and repeat the check in step 5. KE-430B, 430C series...
  • Page 135 Move the home position dog for feed cam Y to dog for feed cam Y to dog for feed lever Y to dog for feed lever Y to the right the left the right the left 3499Q 3501Q KE-430B, 430C series...
  • Page 136: Adjusting The Needle Up Stop Position

    (4) so that there is approximately 2.5–3.0 mm of deflection in the upper shaft timing belt (2) when the middle of the belt is pressed with a force of 10 N. 3576Q KE-430B, 430C series...
  • Page 137: Checking The Head Position Switch

    5-27. Checking the head position switch Check that the head position switch is turned on as shown in the illustration. Note: If the head position switch is not turned on, error E-17 (error E.16 for the KE-436B/436C) will be displayed. 3510Q KE-430B, 430C series...
  • Page 138: Work Clamp Interchangeability

    5. ADJUSTMENT 5-28. Work clamp interchangeability (KE-433B) The KE-430B, 430C work clamp can also be used with the KE-433B. Remove the screw (1), washer (2) and cover support stand (3), and then change the installation position for the work clamp arm assembly (4) from the standard installation position A to installation position B.
  • Page 139: Adjustment Of Air Pressure (pneumatic Specifications)

    Loosen the nut (3) and push in or pull out the adjusting bolt (4) so that the presser crank (2) can be horizontal when the reversal cylinder piston rod (1) is moved to the left extreme. 2624Q KE-430B, 430C series...
  • Page 140: Troubleshooting

    Thread comes Stitches being skipped Refer to “Skipped stitches occur” P.134 unthreaded. sewing start. Instruction Uneven needle thread. Adjust the sub-tension. manual Adjust the thread take-up lever P.114 Needle thread is too short. stroke. P.115 KE-430B, 430C series...
  • Page 141 Refer to “6. CHECKING THE Instruction Needle is striking the button (438) SEWING PATTERN” manual Instruction Manual. Button breaks. (438) Refer to “6. CHECKING THE Instruction Needle is striking the button SEWING PATTERN” manual Instruction Manual. KE-430B, 430C series...
  • Page 142 Replace the head position switch if it is broken. Inner clamping device Adjust the work clamp pressure so does not operate. Work clamp pressure is too strong. that the inner clamping device P.132 operates. (434, 435, 436) KE-430B, 430C series...
  • Page 143: Optional Parts

    In addition, the work clamp is made position and then start sewing again. from plastic so that pattern shape processing is also easy. KE-430B, 430C series...
  • Page 144 PS-3000 Programming software for electronic Programmer (KE-436*)) pattern sewer This is a software program which creates new sewing patterns using a personal computer. 3582Q Sewing date can be created, edited and saved. KE-430B, 430C series...
  • Page 145: Electric Mechanism

    The DC fan motor serves as a fan to cool the inside of the control box. Clean the inlet filter monthly. Conversion transformer (depending on power supply voltage specification) The conversion transformer controls the power supply voltage to provide 220V. Control box Conversion transformer DC fan motor Air inlet Power supply circuit board Main circuit board 3583Q KE-430B, 430C series...
  • Page 146: Fuse Explanation

    (glass tube fuse, 6A-250V) nothing operates. Fuse 6A The power indicator is not illuminated, and 153242-000 (glass tube fuse, 6A-250V) nothing operates. Fuse No.1 Fuse Fuse No.3 No.2 Fuse No.4 Main circuit board mounting side Front panel 3586Q 3587Q KE-430B, 430C series...
  • Page 147: Connectors

    Therefore, be sure to check if each connector is correctly inserted and that there is no contact failure between pins and wires before starting troubleshooting procedures. 8-4-1. Connector positions Outside of the control box For foot switch 3588Q Main circuit board 3589Q KE-430B, 430C series...
  • Page 148 8. ELECTRIC MECHANISM Power supply circuit board 3590Q Panel PCB (KE-430*, 431*, 432*, 433B, 434*, 435*, 484C, BE-438*) 3591Q Panel PCB (KE-436B, 436C) Panel P-ROM (PL) 3592Q KE-430B, 430C series...
  • Page 149 8. ELECTRIC MECHANISM Outside of the panel (KE-436B, 436C) Programmer cord 3593Q Programmer and programmer circuit board (KE-436B, 436C) Operation panel LCD inverter Programmer PROM (PG) Programmer PCB LCD contrast VR 3594Q KE-430B, 430C series...
  • Page 150 3657Q 3658Q • The work clamp does not operate. • Error E-61 is displayed. (solenoid specification only) • Thread trimming is not performed. * Not used with pneumatic specifications. • Thread take-up lever does not operate. 3659Q KE-430B, 430C series...
  • Page 151 • The machine motor does not run. • Motor operation is unstable. • Needle up stop position is not correct. • Error E-20 is displayed. ([E.20] KE-436B, 436C) • Error E-50 is displayed. ([E.22] KE-436B, 436C) 3665Q KE-430B, 430C series...
  • Page 152 • Error E-17 is displayed. ([E.16] KE-436B, 436C) 3670Q <KE-430*, 431*, 432*, 433B, 434*, 435*, 484C, BE-438*> • Indication is strange. • Any switch does not have any effect. • The power indicator is not illuminated. 3671Q KE-430B, 430C series...
  • Page 153 • The power indicator is not illuminated. • Error E.E1, E.E2 or E.E3 is displayed. 3672Q <KE-434* pneumatic specification, KE-435*, 436*, 484C> • The work clamp does not operate. • The stepping foot does not operate. 3673Q KE-430B, 430C series...
  • Page 154: Explanation Of The Dip Switches

    Displays the enlargement/reduction ratio in millimeter units instead of as a DIPA-6 percentage. (After changing this setting, be sure to carry out the auto-clear operation by referring to page 164.) DIPA-7 Enlargement of pattern size is not available. DIPA-8 Program number is fixed. KE-430B, 430C series...
  • Page 155 When a fiber-type thread breakage detector device is used, detection precision is increased from 5 to 10. Fiber-type thread breakage detector device is ON, and DIP switch A-8 is ON DIPB-6 (available as an option). DIPB-7 DIPB-8 KE-430B, 430C series...
  • Page 156 When the motor operates in reverse to raise the needle, the thread take-up will stop at a position which is lower than its normal stopping position. As a result, the thread take-up will rise slightly at the sewing start, and this may result in the thread pulling out under certain conditions. KE-430B, 430C series...
  • Page 157: Explanation Of The Memory Switches

    P2 and P4 (5) are pressed. * If you press the RESET switch (6) at this time, memory switches will be returned to their initial settings (factory default settings). 5. Press the TEST switch (1). The display will return to normal. KE-430B, 430C series...
  • Page 158 (The device does not retract at this time, regardless of the setting for memo-15.) Solenoid wiper can be used (available as an option except for KE-434* memo-14 pneumatic specification and KE-435*). *5 ON for KE-484C, and “--” at other times KE-430B, 430C series...
  • Page 159 (sensor is optional). (KE-484C) Special emergency stop release method is used (error code E-11 is cleared by memo-2A pressing reset switch once and home position is cleared). (KE-484C) memo-2b memo-2E memo-2F Pneumatic thread wiper and work clamp operate together. (KE-484C) KE-430B, 430C series...
  • Page 160 Default value for memo-31 KE-430* KE-431* KE-432* KE-433B KE-434*, 435*, (If the value is set to 99, the maximum 484C length allowed will be 100 mm) BE-438* 7 (Limited to 6.4 mm) 7 (Limited to 6.4 mm) KE-430B, 430C series...
  • Page 161 Changes the work clamp lift timing after sewing is finished. <KE-484C> 7.5 memo-4E 2 - 9 Tension release ON timing after thread trimming. 2 (Fast) ← 5 (Standard) →9 (Slow) <KE-484C> 7.5 memo-4F 14 - 19 Thread trimming timing 14 (Standard) ↔ 19 (Slow) KE-430B, 430C series...
  • Page 162: Explanation Of The Memory Switches

    6. Once the program data has been read from the floppy disk, change to memory switch setting mode and then press the B.T. SET switch (8). The buzzer will sound twice, and the current memory switch settings will be written to the floppy disk. KE-430B, 430C series...
  • Page 163 Changes the split number automatically by using an external switch. (Use option connector  memo-1E P3 on the operation panel.) Program number is changed automatically by using outside switch. (Use optional  memo-1F connector P3 on the operation panel.) KE-430B, 430C series...
  • Page 164 0: No automatic correction  memo-37 0 - 3 1: Read as BAS-311A data 2: Read as BAS-326A data 3: Read as BAS-341A, 342A data ex. Read BAS-311A data by KE-436C  Set memo-37=1.     memo-38 KE-430B, 430C series...
  • Page 165  memo-3c 0 - 4 0: Across inside of work clamp, 1: Top-left, 2: Bottom-left, 3: Bottom-right, 4: Top-right     memo-3d     memo-3E     memo-3F KE-430B, 430C series...
  • Page 166: Setting The Work Clamp Mode

    When memo-42 (memo-3b) has been used to make a special setting, DIP switches A-1 and A-2 function as follows.  When DIP switch A-1 is at ON, the work clamp are not raised automatically at the sewing end.  DIP switch A-2 is ignored except when memo-42 (memo-3b) = 8, 11, 12. KE-430B, 430C series...
  • Page 167 Plug: 2B Both pressers lower, but only left presser lowers in light work Branch: 2A clamp mode Plug: 1A Both pressers lower, but only right presser lowers in light work Branch: 2A clamp mode Plug: 1A KE-430B, 430C series...
  • Page 168: Checking The Input Sensor And Dip Switch Input

    The DIP switch can be changed at this time without turning off the power so that you can check the DIP switch input. However, you should normally always turn off the power when changing DIP switch settings. 3. Press the TEST switch (2) again to return the display to the normal condition. KE-430B, 430C series...
  • Page 169 The DIP switch can be changed at this time without turning off the power so that you can check the DIP switch input. However, you should normally always turn off the power when changing DIP switch settings. KE-430B, 430C series...
  • Page 170: Checking The Input Voltage

    [100 - 120] 100V (for 100-V specs.), 380V (for 380-V specs.), 400V 400V (for 400-V specs.) or 415V (for 415-V specs.). 415V 5. Press the TEST switch (3) again to return the display to the normal condition. KE-430B, 430C series...
  • Page 171: Clearing All Memory Settings

     This operation causes memory switches to be returned to their initial settings, and user program settings to be cleared.  If the optional emergency stop switch has been installed, you should reset memory switch No. 10 to ON. KE-430B, 430C series...
  • Page 172: Confirming Software Version

    2. Every time the SELECT switch (3) on the panel is pressed until the TEST switch (1) is pressed again, the indication will change as follows: Indication LED of Menu switch PROM X-SCALE Main PROM (MN) Y-SCALE Motor PROM (IM) Version number indication (example) PROM label KE430C Indication [A300] MN-C KE430C Indication [c403] IM-D03 KE-430B, 430C series...
  • Page 173 LED of Menu switch PROM X-SCALE Main PROM (MN) Y-SCALE Motor PROM (IM) SPEED Programmer PROM (PG) B. T. COUNTER Panel PROM (PL) Version number indication (example) PROM label KE436C Indication [A0] [300] MN-C BAS300E Indication [d0] [403] PL-D03 KE-430B, 430C series...
  • Page 174: Table Of Error Codes

    Turn off the power and check the ground wire E-21 Machine motor operation error. connection. Data is outside possible sewing area due to Press the RESET switch, and then set the E-30 enlargement ratio setting. enlargement ratio again. KE-430B, 430C series...
  • Page 175 Turn off the power and clean the air intake port of E-d0 abnormally hot. the box. Turn off the power, and turn it back on. If the error Malfunction of EEPROM (malfunction of E-E0 continually occurs, contact a qualified service main circuit board). technician. KE-430B, 430C series...
  • Page 176 Data exceeds available sewing area due to E.30 Adjust resize ratio. resize ratio. Stitch length exceeds 10mm due to resize E.31 Adjust resize ratio. ratio. E.32 No end code in sewing data. Input end code, or change program No. KE-430B, 430C series...
  • Page 177 (malfunction of power supply circuit board). Incorrect connection of cable between power E.F1 Turn off power and check connector P20. supply PCB and main PCB. E.F2 Overcurrent at power supply PCB. Turn off power and check it. KE-430B, 430C series...
  • Page 178: Troubleshooting

    Yes-or-no Turning-off decision-making power switch process The error status number in the first column of the table of “8-14-2. Problem solution and measures” KE-430*, 431*, 432*, 433B, 434*, 435*, 484C, BE-438* KE-436B, 436C 3674Q KE-430B, 430C series...
  • Page 179 8. ELECTRIC MECHANISM 3675Q KE-430B, 430C series...
  • Page 180 8. ELECTRIC MECHANISM 3676Q KE-430B, 430C series...
  • Page 181 8. ELECTRIC MECHANISM 3677Q KE-430B, 430C series...
  • Page 182 8. ELECTRIC MECHANISM 8-14-1 3678Q KE-430B, 430C series...
  • Page 183 1. While the power is turned off, check each connector is securely plugged in by referring to “8-4. Connectors”. 2. Find the error status number in the troubleshooting flowchart. 3. From the applicable part of the flowchart, take the reference number to find the correspondingly numbered details of the problem in the following table. KE-430B, 430C series...
  • Page 184 4. Fuse has blown • Remove fuses No.3 and No.4, and check Fuse 6A-250V them for continuity. If there is no continuity, replace the fuses with new ones, and perform the check/ repair/ adjust items of #1-5. KE-430B, 430C series...
  • Page 185 Check threads are not tangled in the DC fan motor assembly the error code E-70 appears cooling fan. on the display window. b. Check (FAN) connectors ([E.c1] KE-436B, 436C) securely plugged in on the main circuit board. KE-430B, 430C series...
  • Page 186 E-F1 appears on to the power supply circuit board and P16 the display window. (PER) connectors are attached to the ([E.F1] KE-436B, 436C) main circuit board. Check the cord connecting P2 and P16 is not damaged. KE-430B, 430C series...
  • Page 187 • When error code [E.40], [E.41], or [E.4F] Floppy [E.4F], the floppy disk is appears, insert other floppy disk into the defective. FDD. If the FDD reads the floppy disk, the original disk is defective. 3. Panel circuit board defective Panel circuit board KE-430B, 430C series...
  • Page 188 • Remove fuse No.1 and check it for Fuse 5A-250V feed mechanism does not continuity. If there is no continuity, the move and error code E-A0 fuse is defective. Proceed to #8-2. appears display window. ([E.A1] KE-436B, 436C) KE-430B, 430C series...
  • Page 189 ([E.A1] KE-436B, 436C) cord. If the resistance is 2–3 , it is not Main circuit board defective. After measurement, rejoin P6 and P7 connectors. b. If item a causes no problem, the main circuit board is defective. 3639Q KE-430B, 430C series...
  • Page 190 DIP switch input” to make sure that the work clamp sensor is connected. If item b causes no problem and item c results in defective sensor input, either the cord connection is poor or the main circuit board is defective. KE-430B, 430C series...
  • Page 191 1. Work clamp is not raised • Same as #9-3. when error code E-62 appears display window. 2. Work clamp is not lowered • Same as #9-2. although attempted when error code E-63 appears on the display window. KE-430B, 430C series...
  • Page 192 ON.) • Set memo-0E to OFF. Error status #13 Quick feeding cannot be performed during test sewing. Probable causes Check/ repair/ adjust Parts to be replaced 1. Foot switch and cord defec- • See #7. tive KE-430B, 430C series...
  • Page 193 If signal is switched on and off, there is no problem. c. Turn the pulley by hand to check it can easily rotate. d. If error code E-20 (E.20) appears when the machine is stopped, see “5-20. Adjusting the thread trimming solenoid position” for adjustment. KE-430B, 430C series...
  • Page 194 • Separate P5 (SOL) connectors on the Thread trimmer sole- defective main circuit board, and then measure the noid resistance between pins 1 and 2 in the connector on the cable. If the resistance is 7–8 , the solenoid is not defective. 3647Q KE-430B, 430C series...
  • Page 195 (“E-50” appears <“E.22” for the KE-436B and 436C>.) Probable causes Check/ repair/ adjust Parts to be replaced 1. Poor adjustment • See “5-25. Adjusting the needle up stop position,” for adjustment. 2. Synchronizer defective • See #16-1. KE-430B, 430C series...
  • Page 196 PCB, and then return them to their positions. 2. The programmer is defective. • Replace the programmer with a new one. Programmer 3. Panel circuit board defective • Replace the panel circuit board with a new Panel circuit board one. KE-430B, 430C series...
  • Page 197: Control Circuit Block Diagram

    8. ELECTRIC MECHANISM 8-15. Control circuit block diagram 3680Q KE-430B, 430C series...
  • Page 198 SERVICE MANUAL KE-430B, 430C series Printed in Japan I3080844B 2003.09. B (1)

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