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Brother BE-438B, Service Manual

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Brother BE-438B Service Manual Download Page 24

2. MECHANICAL DESCRIPTIONS

 

 

２

-

７

. Thread trimmer mechanism 

 
 
 
 
 
 

KE-430B, 430C series 

17 

3254Q 

1. Thread trimmer solenoid 
2. Driving lever push lever 
3. Thread driving lever 
4. Thread trimmer roller 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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 

 
 
 
 
 

Summary of Contents for BE-438B

Page 1: ...36B 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 ...

Page 2: ...prevent accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications DANGER The instructions which follow this term indicate situations where failure to follow the instructions will almost certainly result in death or severe injury CAUTION The instructions which follow this term indicate situations where failure to follow the instructio...

Page 3: ...off the power and disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Installation Machine installation should only be carried out by a qualified technician Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done The sewing machine weighs more than 52 kg The installation should be carried out by two or m...

Page 4: ...goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease un der any circumstances as they can cause vomiting and diarrhoea Keep the oil out of the reach of children Maintenance and inspection Maintenance and inspection of the sewing machine should onl...

Page 5: ... display Safety devices Eye guard Finger guard Thread take up cover Thread take up solenoid cover Belt cover Frame side cover etc 4 Be sure to connect the ground If the ground connection is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur 5 Direction of operation iv KE 430B 430C series Thread take up cover Frame side cover 2670...

Page 6: ... 1 37 3 13 Feed mechanism 2 39 3 14 Work clamp lifter mechanism Solenoid specifications 41 3 15 Stepping foot lifter mechanism KE 435B 435C 436B 436C 43 3 16 Thread wiper mechanism 44 3 17 Thread nipper mechanism 47 3 18 Thread take up mechanism 49 3 19 Thread trimmer mechanism 51 4 ASSEMBLY 54 4 1 Thread trimmer mechanism 1 54 4 2 Thread nipper mechanism 56 4 3 Thread wiper mechanism 59 4 4 Threa...

Page 7: ...read trimming link mechanism 122 5 21 Adjusting the backlash 123 5 22 Adjusting the presser solenoid position Solenoid specifications 124 5 23 Adjusting the sensor perceive plate position Solenoid specifications 125 5 24 Adjusting the home position 126 5 25 Adjusting the needle up stop position 129 5 26 Adjusting the tension of the upper shaft timing belt 129 5 27 Checking the head position switch...

Page 8: ...able Maximum stitch number 20 000 stitches including 10 000 stitches which can be added Work clamp lifter Solenoid type Work clamp height 17 mm max Rotary hook Shuttle hook shuttle hook 2 optional Wiper device Standard equipment Thread trimmer device Standard equipment Thread take up device Standard equipment Data storage method P ROM Any sewing pattern can be added using PS 3000 Number of user pr...

Page 9: ...olenoid type Work clamp height 17 mm max for solenoid 25 mm max for pneumatic Max 17 mm for inner clamping device 13 mm max Rotary hook Shuttle hook shuttle hook 2 optional Wiper device Standard equipment Thread trimmer device Standard equipment Thread take up device Standard equipment Stepping foot lift amount 18 mm Stepping foot stroke 0 mm 3 8 mm Safety device built in stopping mechanism Data s...

Page 10: ...hes which can be added Work clamp lifter Solenoid type Work clamp height 17 mm max 13 mm max Rotary hook Shuttle hook shuttle hook 2 optional Wiper device Standard equipment Thread trimmer device Standard equipment Thread take up device Standard equipment Data storage method P ROM Any sewing pattern can be added using PS 3000 Number of user programs 16 Number of cycle programs 4 61 sewing patterns...

Page 11: ...pneumatic type Pneumatic type Work clamp height 17 mm max for solenoid 25 mm max for pneumatic Max 17 mm for inner clamping device Rotary hook Shuttle hook shuttle hook 2 optional Treble hook Wiper device Standard equipment Thread trimmer device Standard equipment Thread take up device Standard equipment Stepping foot lift amount 18 mm Stepping foot stroke 0 mm 3 8 mm Safety device built in stoppi...

Page 12: ...d tension N 0 2 0 3 0 2 0 3 0 25 0 3 Thread take up spring height mm 6 8 6 8 6 8 Thread take up spring tension N 0 3 0 4 0 5 0 6 0 3 0 4 Pre t N ension 0 5 0 8 0 3 0 5 0 5 0 8 Needle DP 5 14 DP 17NY 19 DP 5 9 BE 438B 438C KE 484C Model BE 438B BE 438C KE 484C Needle TQ 1 12 TQ 1 NY 12 12 DP 17 DP 17 25 Upper thread 60 or equivalent 60 or equivalent 4 or equivalent Lower thread 60 or equivalent or ...

Page 13: ...d take up spring height Thread take up spring tension Measure the value when the thread take up spring starts to extend 1 2 mm 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 6 ...

Page 14: ...sms 3240Q 40Q 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 With stepping foot 3 Stepping foot connecting rod 4 Stepping foot arm 5 Stepping link assy 6 Presser bar lifter 7 Stepping foot The mechanisms operate in the order of the numbers given in the illustrations KE 430B 430C series 7 ...

Page 15: ...2 MECHANICAL DESCRIPTIONS 3241Q 41Q 4 Needle bar crank 5 Needle bar connecting rod 6 Needle bar clamp 7 Needle bar KE 484C 1 Pulley 2 Upper shaft 3 Thread take up crank KE 430B 430C series 8 ...

Page 16: ...rank rod assy 4 Rock gear 5 Lower gear 6 Lower shaft 7 Driver 2 Upper shaft 1 Pulley 8 Shuttle hook 3242Q Q 3243Q 3243Q 10 Treble hook assy 5 Tension pulley arm 6 Lower shaft timing pulley 7 Lower shaft 8 Lower gear 9 Rotary hook shaft 4 Timing belt KE 484C 1 Pulley 2 Upper shaft 3 Timing pulley KE 430B 430C series 9 ...

Page 17: ...k clamp arm lever 11 Work clamp When the presser solenoid is turned off the presser plate rises and work clamps lower 7 Work clamp lifting rod 8 Button clamp lifting lever 9 Button clamp holder hook assy 10 Button clamp holder shaft 11 Button clamp 3266Q 3267Q 7 Work clamp lifting rod 8 Work clamp lifter lever 9 Presser adjusting plate assy 10 Button clamp holder shaft 11 Work clamp KE 432B 432C B...

Page 18: ...2 MECHANICAL DESCRIPTIONS 3245Q 45Q 1 Air cylinder 2 Work clamp arm lever shaft 3 Work clamp arm lever 4 Work clamp Pneumatic specifications KE 430B 430C series 11 ...

Page 19: ...lamp open close mechanism KE 432B 432C 3262Q 1 Solenoid assy 2 OY solenoid pin 3 Sensor plate 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 12 ...

Page 20: ... rises and thread wiper operates in the opposite direction 1 Work clamp solenoid 2 Plunger 3 Link assy C 4 Link shaft B 5 Thread wiper driving lever 6 Thread wiper rod assy 7 Thread wiper arm assy 8 Thread wiper 1 Thread wiper solenoid 2 Thread wiper connecting rod assy 3 Thread wiper arm assy 4 Thread wiper Solenoid type thread wiper KE 430B 430C series 13 ...

Page 21: ...noid 2 Thread wiper connecting rod assy 3 Thread wiper arm assy 4 Thread wiper Stepping foot specifications 2 Thread wiper connecting rod lever 3 Thread wiper connecting rod 4 Thread wiper arm assy 5 Thread wiper 1 Thread wiper cylinder KE 484C KE 430B 430C series 14 ...

Page 22: ...rection 1 Pulse motor X 2 Coupling hub 6 35 3 Coupling spacer 4 Coupling hub 8 5 Feed cam X 6 Feed cam roller 7 X feed lever 3250Q 8 Tack length regulator block assy 9 Feed bracket Y direction 1 Pulse motor Y 2 Coupling hub 6 35 3 Coupling spacer 3251Q 5 Feed cam Y 6 Feed cam roller 7 Y feed lever 8 Tack width feed shaft 9 Feed bracket 4 Coupling hub 8 KE 430B 430C series 15 ...

Page 23: ...se motor X 2 Coupling hub 8 9 Feed bracket 1 Pulse motor Y 5 Feed cam X 6 Feed cam roller 7 X feed lever 8 Tack length regulator block assy 4 Coupling hub 8 3 Coupling spacer 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 ...

Page 24: ...eries 17 3254Q 1 Thread trimmer solenoid 2 Driving lever push lever 3 Thread driving lever 4 Thread trimmer roller 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 ...

Page 25: ...ver push lever 3 Thread driving lever 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 KE 430B 430C series 18 ...

Page 26: ...Tension release pin Manual operation In thread trimming 1 Thread trimmer solenoid 2 Driving lever push lever 3 Thread driving lever 4 Tension release driving lever 5 Lower thread retainer collar 6 Thread trimmer cam 12 Tension release pin 7 Tension release driving lever 8 Tension release lever U 9 Tension release rod assy 10 Tension release lever 11 Tension release stud ...

Page 27: ...2 MECHANICAL DESCRIPTIONS 3258Q 4 Tension release pin 3 Tension release pin L 2 Tension release pin push lever KE 484C 1 Tension release cylinder KE 430B 430C series 20 ...

Page 28: ...take up mechanism 3259Q 3260Q 3261Q 1 Thread take up solenoid 2 Solenoid joint 3 Thread take up lever crank 4 Thread take up lever KE 484C Stepping foot specifications 1 Thread take up cylinder 2 Thread take up lever KE 430B 430C series 21 ...

Page 29: ... hoses from the air supply and wait for the needle on the pressure gauge to drop to 0 before disassembly of any parts which use the pneumatic equipment Use only the proper replacement parts as specified by Brother If any safety devices have been removed be absolutely sure to re install them to their original positions and check that they operate correctly before using the machine Any problems in m...

Page 30: ... 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 12 Needle plate auxiliary plate 13 Auxiliary plate supports 4 pcs KE 434B 435B 436B KE 434C 435C 436C 484C 3269Q 3270Q KE 435B 435C KE 436B 436C KE 430B 430C series 23 ...

Page 31: ...feed shaft 12 Rod end 13 Screws 8 pcs 14 Feed bracket guide plate 15 Feed bracket assy 16 Flat screws 2 pcs Be careful not to drop these three bearing balls when removing the work clamp arm assembly Be careful not to drop these two bearing balls when removing the feed bracket assembly Remove the feed bracket guide plate and the feed bracket assembly together as a single unit 3271Q 17 Screws 2 pcs ...

Page 32: ...hread guide 4 Bolt 7 Button clamp holder shaft 8 Work clamp arm assy 9 Bolts 2 pcs 10 Button clamp holder support 11 Work clamp felt 12 Screws 2 pcs 13 Feed plate 14 Rubber cap 15 Set screw Loosen 16 Tack width feed shaft 17 Rod end 18 Screws 8 pcs 19 Feed bracket guide plate 20 Feed bracket assy 21 Flat screws 2 pcs 22 Screws 2 pcs 23 Needle plate 5 Nuts 2 pcs Adjusting screw Compression spring P...

Page 33: ... 8 pcs 13 Feed bracket guide plate Pull upward 14 Screw 15 Cover support stand 16 Feed bracket cover 3275Q 17 Set screw Loosen 18 Tack length regulator block Pull out 19 Feed bracket guide shaft assy 20 Retainer assys 2 pcs 21 Spacers 2 pcs 22 Feed bracket assy Remove the feed brack et guide plate as a single assembly with the feed bracket and other parts still assembled 23 X feed cover 24 Y feed ...

Page 34: ...C 484C KE 434B 434C Solenoid specification 1 Set screw 2 Needle 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 27 ...

Page 35: ...mbly together remove the tack width regulator block assembly from the Y feed lever and pull all of them forward to remove them Y feed lever 3279Q 12 Set screw Loosen 13 Tack length regulator block assy 14 Retainer assys 2 pcs 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 ...

Page 36: ...ar thread guide 4 Nuts 2 pcs Adjusting screw Compression spring Push upward and remove horizontally 5 Set screws 2 pcs Loosen 6 Button clamp holder shaft 15 Tack width feed shaft 16 Rod end 17 Screws 8 pcs 18 Feed bracket guide plate 19 Feed bracket assy 7 Button clamp holder 8 Bolts 2 pcs 9 Button clamp holder support 10 Work clamp felt 11 Screws 2 pcs 20 Flat screws 2 pcs 12 Feed plate 21 Screws...

Page 37: ...282Q 1 Bobbin case assy 2 Shuttle race base setting claw Open to right and left 3 Shuttle race base 4 Shuttle hook KE 430B 430C series 30 KE 484C 1 Bobbin case assy 2 Screw 3 Hook stopper setting base 4 Set screw Loosen 5 Treble hook assy 3283Q ...

Page 38: ...n 8 Wick Pull out from arm 9 Thread take up support shaft 10 Thread take up support 11 Oil cap 12 Set screw Loosen 13 Set screw Loosen 14 Needle bar connect ing rod 3286Q 15 Needle bearing Do not remove the needle bar guide if possible to prevent the machine from overheating due to needle bar rubbing 16 Thread take up lever 17 Rubber caps 2 pcs 18 Screws 2 pcs 19 Needle bar guide ...

Page 39: ...y and the presser bar lifter together as a single unit 1 Screw 2 Finger guard 3 Presser foot 4 Presser adjusting screw 5 Presser bar spring guide 6 Presser bar spring 3287Q 7 Washer 8 Screw Loosen 9 Presser bar clamp 10 Cushion 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 Pu...

Page 40: ...od Lower part Lower downward 11 Set screws 2 pcs Loosen 11 Set screws 2 pcs Loosen 12 Set screws 2 pcs Loosen 13 Motor connector 14 Nut Loosen 15 Bolt Loosen 16 Bolts 3 pcs 17 Motor bracket 18 Upper shaft timing belt 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 2...

Page 41: ...25 Upper shaft timing belt 26 Set screws 2 pcs Loosen 27 Timing pulley assy U 28 Screws 2 pcs 29 Synchronizer assy 30 Upper shaft 31 Thrust washer 32 Bobbin winder pulley 33 Thread trimmer cam 34 U timing pulley F 35 U timing belt F 13 Nuts 2 pcs Loosen 14 Adjusting screw Loosen 15 Adjusting screw Loosen 16 Tension pulley arm 17 Set screws 2 pcs Loosen 18 Set screws 2 pcs Loosen 19 Set screws 2 pc...

Page 42: ...n in the direction of the arrow 9 Set screws 2 pcs Loosen 2 Felt holder 10 Wick Untie the knot 3 Bolt Loosen 11 Set screws 2 pcs Loosen 4 Driver 12 Rock gear shaft 5 Retaining ring 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 15 Crank rod Lower part Pull out from the rear of the machine 8 Set screw collar KE 430B 430C series 35...

Page 43: ... which should not be disassembled 1 Set screw Loosen 2 Lower gear 3 Set screws 2 pcs Loosen 4 Rotary hook shaft 5 Set screw collar 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 ...

Page 44: ...taining ring 3297Q 1 Set screws 2 pcs Loosen 2 Set screw collar 3 Set screw Loosen 4 Tack width feed lever shaft with retaining ring Pull upward 5 Thrust washer 6 Wicks 3 pcs Pull out from oil supply hole Oil supply 7 Y feed lever assy Pull upward hole 8 Thrust washer 9 X feed lever assy Pull upward 10 Screw 11 Home sensor setting plate 12 Screw 13 Cord holder 14 Screw 15 Home sensor setting plate...

Page 45: ...ng 3299Q 1 Set screws 2 pcs Loosen 2 Set screw collar Oil supply 3 Set screw Loosen hole 4 Tack width feed lever shaft with retaining ring Pull upward 5 Thrust washer 6 Wicks 3 pcs Pull out from oil supply hole 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 p...

Page 46: ... harness 3 Bolts 4 pcs 4 Pulse motor assy Y Disconnect the harness 5 Coupling spacer 6 Set screws 2 pcs Loosen 7 Coupling hub 6 35 8 Screws 2 pcs 9 Feed cam bracket 10 Positioning pins 2 pcs 11 Screw 12 Feed home position dog 13 Set screws 2 pcs Loosen 14 Coupling hub 8 15 Set screws 2 pcs Loosen Same for both X and Y 16 Cam shaft 17 Ball bearings 2 pcs 18 Feed cam 3302Q ...

Page 47: ...Coupling hub 8 4 Ball bearing 16 Coupling spacer 5 Bolts 4 pcs 3 pcs KE 484C 17 Set screws 2 pcs Loosen 6 Pulse motor assy Y Disconnect the harness 18 Feed cam 7 Set screws 2 pcs Loosen 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 23 Coupling hub 8 11 Screws 2 pcs 12 Y feed cam bracket KE 430B 430C series 40 ...

Page 48: ... 9 Link shaft A Pull out 10 Washers 2 pcs Be careful not to drop 3305Q 3306Q 11 Oil cap 12 Snap pin 13 Link shaft C Pull out 14 Work clamp plate 15 Work clamp lifter link related parts 16 Rubber caps 2 pcs 17 Screws 2 pcs 18 Screws 4 pcs 19 Presser solenoid assy Disconnect the harness 3307Q Note KE 433B 434B 434C Hold the work clamp plate when removing link shaft C otherwise the work clamp plate m...

Page 49: ...Be careful not to drop 3308Q 11 Oil cap 12 Snap pin 13 Link shaft C Pull out 14 Presser lifter link related parts 15 Set screw Loosen 16 Button clamp lever shaft Pull out 17 Work clamp lifter lever KE 432B 432C Button clamp lifting lever BE 438B 438C 18 Retaining ring BE 438B 438C 19 Work clamp lifting rod Pull downward 20 Rubber caps 2 pcs 21 Screws 2 pcs 22 Screws 4 pcs 23 Presser solenoid assy ...

Page 50: ...LY 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 43 ...

Page 51: ...en Remove the thread wiper rod assembly from the work clamp lever lifter shaft and then lift it up together with the thread wiper driving lever to remove them 6 Thread wiper arm assy Pull downward 7 Set screw Loosen 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 44 ...

Page 52: ...313Q 1 Screw with washer 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 45 ...

Page 53: ... pcs 3 Solenoid box assy Disconnect the harness 4 Set screw Loosen 5 Thread wiper connecting rod assy KE 484C 1 Screw 2 Bolts with washers 2 pcs 3 Bolts 2 pcs 3315Q 4 Cylinder box Disconnect the harness 5 Set screw Loosen 6 Thread wiper connecting rod KE 430B 430C series 46 ...

Page 54: ...ion release stud 5 Shoulder screw 6 Shoulder screw 7 Tension release rod assy 10 Work clamp lever lifter shaft 11 Collar 12 Tension release lever 13 Screw with washer 14 Lifting lever 15 Screw KE 434B 434C Pneumatic spec 16 Tension release rod KE 434B 434C Pneumatic spec 17 Presser bar lifter crank 8 Driving lever push lever 9 Set screw Loosen ...

Page 55: ...ulder screw 7 Tension release rod assy 8 Driving lever push lever 9 Screw 10 Tension release bracket Stepping foot specifications 3317Q KE 484C 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 3318Q ...

Page 56: ...pcs 2 Solenoid setting plate 3 Spring 4 Set screws 2 pcs Loosen 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 13 Thread take up lever crank 14 Plain washer Stepping foot specifications 3319Q 3320Q ...

Page 57: ...3 DISASSEMBLY KE 430B 430C series 50 KE 484C 1 Pin 2 Screws 2 pcs 3 Setting plate 4 Shoulder screws 2 pcs 5 Thread take up lever 3321Q ...

Page 58: ...ly 4 Rubber cap 3322Q 1 Rubber cap 2 Set screw Loosen 3 Lever shaft Tilt the machine head 5 Set screw Loosen 6 Retaining ring 7 Driving lever guide shaft Pull out 8 Cushion 9 Thread release driving lever assy 10 Washer 11 Spring 12 Spring 13 Spring hook 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 ro...

Page 59: ... Set screw Loosen 3 Lever shaft 4 Rubber cap 5 Set screw Loosen 6 Retaining rings 2 pcs 7 Driving lever guide shaft Pull out 8 Cushion Tilt the machine head 9 Washer 10 Spring 11 Spring 12 Bolts 2 pcs 13 Thread trimmer cylinder 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 21 Thread driving ...

Page 60: ...3 DISASSEMBLY KE 430B 430C series 53 ...

Page 61: ... Place the cushion against the edge of the arm set the various parts so that there is no gap between them as shown in the illustration and then tighten the set screw as far as the screw stop Adjust the position of the thread driving lever assembly while referring to 5 20 Adjusting the position of the thread trimming link mechanism 2 Spring 3 Washer 4 Thread release driving lever assy 5 Thread driv...

Page 62: ...driving lever assembly while referring to 5 20 Adjusting the position of the thread trimming link mechanism 1 Driving lever guide shaft 2 Spring 3 Washer 4 Thread driving lever assy 5 Cushion 6 Retaining rings 2 pcs 7 Set screw 8 Rubber cap 9 Thread trimmer rod L 10 Lever shaft 11 Set screw 12 Rubber cap 13 Thread trimmer lever 14 Thread trimmer lever shaft with washer and retaining ring 15 Set sc...

Page 63: ...on release lever U to the driving lever stopper with the shoulder screw After installing the lifting lever check that it moves smoothly 3334Q 1 Presser bar lifter crank 2 Lifting lever 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 ...

Page 64: ... to 1 2 Standard thread tension 3336Q Tighten the set screw while lightly pressing the work clamp lever lifter shaft 1 Presser bar lifter crank 12 Retaining ring 2 Tension release rod 13 Tension release rod assy 3 Screw 14 Shoulder screw 4 Lifting lever 15 Driving lever push lever 5 Screw with washer 16 Tension release lever U 6 Work clamp lever lifter shaft 17 Shoulder screw 7 Tension release lev...

Page 65: ...rew 5 Driving lever push lever 6 Tension release lever U Adjust the thread take up spring height while referring to 1 2 Standard thread tension 7 Shoulder screw 3337Q 8 Tension release pin L 9 Tension release pin 10 Thread tension assy 11 Set screw KE 484C 1 Tension release pin push lever 2 Lever shaft 3 Set screw 4 Rubber cap 5 Tension release cylinder assy 6 Tension release pin L 7 Tension relea...

Page 66: ...amp lever lifter shaft 1 Thread wiper rod assy Insert from above 2 Thread wiper driving lever 3 Thread wiper shaft with washer and retaining ring 4 Set screw 3341Q 5 Thread wiper rod assy Place onto the work clamp lever lifter shaft 6 Retaining ring 7 Work clamp lever lifter shaft 8 Set screw 9 Tension release lever spring 10 Retaining ring 11 Thread wiper arm assy 12 Retaining ring 13 Set screw T...

Page 67: ...d wiper After installing the plunger pin push the thread wiper connecting rod assembly up and check that the thread wiper unit moves smoothly 3342Q 1 Thread wiper arm assy 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 60 ...

Page 68: ...ling the face plate while referring to 4 21 Covers install the bolts and then push the thread wiper connecting rod assembly up and check that the thread wiper unit moves smoothly 5 Bolts 2 pcs 6 Plunger pin 7 Bolts 2 pcs Install to face plate 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 K...

Page 69: ...the solenoid setting plate and the solenoid joint so that the gap between them is 0 5 mm and then tighten the set screws Move the solenoid joint and check that the thread take up lever operates smoothly If it does not move smoothly it may damage the solenoid If the movement is not smooth make fine adjustments to the position of the solenoid setting plate until the thread take up lever operates smo...

Page 70: ...t the solenoid setting plate and the solenoid joint so that the gap between them is 0 5 mm and then tighten the set screws Move the solenoid joint and check that the thread take up lever operates smoothly If it does not move smoothly it may damage the solenoid If the movement is not smooth make fine adjustments to the position of the solenoid setting plate until the thread take up lever operates s...

Page 71: ...4 ASSEMBLY KE 430B 430C series 64 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 ...

Page 72: ...ter link related parts Insert from above the arm 2 Link shaft B Place into the forked section of the thread wiper driving lever 2 3 Link shaft A Pass through the washer and link A 3 4 Snap pins 2 pcs Attach to both ends of link shaft A 5 Set screws 2 pcs 6 Work clamp lifter stopper rubber 7 Work clamp plate Insert from below the arm 8 Link shaft C Pass through link B 8 and the work clamp plate 9 S...

Page 73: ...f the arm Lastly move the work clamp lifer link related parts by hand and check that they move smoothly 3352Q Seen from above 3353Q 11 Screws 2 pcs 12 Screws 4 pcs 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 ...

Page 74: ...ce into the forked section of the thread wiper driving lever 2 3354Q 3 Link shaft A Pass through the washer and link A 3 4 Snap pins 2 pcs Attach to both ends of link shaft A 5 Set screws 2 pcs 6 Retaining ring 7 Plain washer 8 Rubber band 9 Work clamp lifting rod 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 solen...

Page 75: ...mp lifer link related parts by hand and check that they move smoothly 3355Q Seen from above 3356Q 16 Link shaft D 17 Snap pins 2 pcs 18 Guide 19 Screws 2 pcs 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 ...

Page 76: ...B 2 and work clamp plate work clamp lifting rod KE 432B 432C BE 438B 438C 3 2 Sliding portions of link shaft B 4 link B 2 link A 5 and link assy C 6 3 Forked portion of the thread wiper driving lever 7 4 Sliding portions of link shaft A 8 and link A 5 5 Sliding portions of link shaft D 9 and link assy C 6 6 Forked portion of the plunger 10 where link assy C 6 is fitted 7 Outer and inner surfaces o...

Page 77: ...llustration Tighten the set screw in the illustration at the screw stop position Set screw at screw stop 3359Q Screw stop Check that the feed cam turns smoothly 3360Q 1 Feed cam Place the coupling hub onto the pulse motor shaft and then tighten the set screw at the screw stop position so that the pulse motor shaft protrudes from the edge by 2 5 mm 2 Ball bearings 2 pcs 3361Q 3 Cam shaft with retai...

Page 78: ...s 3363Q Apply grease Apply grease Apply grease Place the coupling spacer onto coupling hub 8 11 Coupling spacer 12 Positioning pins 2 pcs 13 Feed cam bracket 14 Screws 2 pcs Set the coupling hub at the angle for inserting the coupling spacer and install the pulse motor to the machine bed Make sure that the harness faces correctly 15 Pulse motor assy X 16 Bolts 4 pcs 3365Q 17 Pulse motor assy Y 18 ...

Page 79: ... cam shaft X direction 3368Q Place the cam onto the cam shaft so that there is no play in the cam and then tighten the set screws Place the coupling hub 8 onto the pulse motor shaft and then tighten the set screw at the screw stop position so that the pulse motor shaft protrudes from the edge by 2 5 mm 3369Q 3362Q 1 Coupling hub 8 2 Set screws 2 pcs 3 PM bracket 4 Ball bearing X 2 pcs Y 1 pc 5 Cam...

Page 80: ...e motor shaft at the angle for inserting the coupling spacer and install the pulse motor to the machine bed Apply grease Make sure that the harness faces correctly Apply grease 3370Q 10 Ball bearing Insert into the bed 11 Coupling spacer 12 Pulse motor assy X 13 PM bracket X 14 Bolts 4 pcs 15 Positioning pins 2 pcs 16 Y feed cam bracket 17 Screws 2 pcs 18 Ball bearing 19 Coupling spacer 20 Pulse m...

Page 81: ...w at the screw stop position 1 X feed lever assy Insert onto bushing 2 Feed cam roller Check that the Y feed lever assembly moves smoothly Place into groove of feed cam X 3 Thrust washer 4 Y feed lever assy KE 430B 430C series 74 3375Q 5 Feed cam roller 2 Put the driver into the end of the Y feed lever and press the X feed lever assy downward Place into groove of feed cam Y 6 Thrust washer 7 Tack ...

Page 82: ...ace into groove of feed cam X 3 Thrust washer 4 Y feed lever assy 5 Feed cam roller Place into groove of feed cam Y 6 Thrust washer 7 Tack width feed lever shaft with retaining ring 8 Set screw 9 Set screw collar 10 Set screws 2 pcs 11 X sensor setting base 12 Screw 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 s...

Page 83: ...ulley assembly U with the screw stop position and tighten the set screw at that position Rotation direction 3382Q 3383Q Place the thread take up crank onto the upper shaft from the face plate end tighten the screw into the hole in the upper shaft and then tighten the set screw Place the thread take up crank thrust washer and bobbin winder pulley stepping foot connecting rod into the upper shaft bu...

Page 84: ...the face plate end tighten the screw into the hole in the upper shaft and then tighten the set screw Place the thread take up crank thrust washer and bobbin winder pulley into the upper shaft bush so that there is no play in the parts and then tighten the set screw at the screw stop position 1 Upper shaft 11 Set screws 2 pcs 2 Thread trimmer cam 12 Set screws 2 pcs 3 U timing pulley F 13 Tension p...

Page 85: ...izer assy 26 Screws 2 pcs 27 Timing pulley assy U 28 Set screws 2 pcs 3387Q 3382Q Make a gap of 1 0 mm between the magnet of timing pulley assembly U and the syn chronizer assembly and then align the rear set screw in the rotation direction of timing pulley assembly U with the screw stop position and tighten the set screw at that position Rotation direction 3383Q ...

Page 86: ... there is a distance of 42 8 43 3 mm between section A of the work clamp lifter lever and the top of the presser bar bush when section 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 79 ...

Page 87: ...ler Adjust while referring to 5 15 Work clamp adjustment 5 Nut 6 Stepping foot arm F 7 Bush L 8 Bush R 9 Bolt 10 Presser bar Insert from above 3391Q 11 Presser bar lifter 12 Cushion Nut 13 Presser bar clamp 14 Screw 15 Washer 16 Presser bar spring 17 Presser bar spring guide 18 Presser adjusting screw 19 Stepping link assy 20 Screws 2 pcs 21 Presser foot Set the presser adjusting screw so that the...

Page 88: ...he stepping work clamp cam 3 to the upper shaft 5 with the set screw 1 At this time push the stepping work clamp cam 3 in the direction of the arrow so that there is no play between it and the upper shaft 5 4 With the presser bar lifter 4 at its lowest point loosen the bolt 8 of stepping work clamp arm R 7 and adjust so that the gap between the presser bar lifter 4 and the presser bar bush 6 is 0 ...

Page 89: ...tighten 3 Thread take up lever 4 Needle bar connecting rod Cut section 5 Needle bearing 6 Set screw 3394Q 7 Set screw Align the needle bar so that reference line A the second lowest reference line on the needle bar or reference line a top reference line is aligned with the lower edge of the needle bar bush when the machine pulley is turned to raise the needle bar from its lowest position and then ...

Page 90: ... with the lower shaft gear and the set screw collar so that there is no play in the lower shaft bush and then tighten the set screws Place the driver against the retaining ring and provisionally tighten the bolt Set the needle bar to its lowest position and then insert the lower shaft with this screw stop facing straight downward 3397Q Apply grease BE 438C Lower shaft bush KE 430B series BE 438B 1...

Page 91: ...e end of the driver and tighten the set screws Check that the machine pulley turns smoothly Place the upper shaft timing belt onto the upper shaft pulley and the motor pulley 3401Q Carry out the steps in 5 26 Adjusting the tension of the upper shaft timing belt before tightening 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...

Page 92: ...ing belt before tightening 2 Lower shaft timing pulley 3 Thrust bearing 4 Lower shaft gear spacer 5 Wick Pass through the lower shaft and make a knot 6 Set screw 7 U timing belt F Place onto the lower shaft timing pulley 8 Rotary hook shaft Insert from the rear of the machine head 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...

Page 93: ... the machine pulley to set the needle to its lowest position 3 Install the thread trimmer solenoid with the screws so that the gap between the thread driving lever assembly and the driving lever stopper is 0 5 mm when the plunger of the thread trimmer solenoid is pushed all the way in Driving lever stopper Plunger Thread driving lever assy 3407Q 1 Thread connecting rod 2 Needle plate 3 Flat screws...

Page 94: ... the needle bar lift amount 5 3 Adjusting the driver needle guard and 5 4 Adjusting the needle clearance 5 Shuttle race base 6 Bobbin 7 Bobbin case assy 8 Felt holder 9 Support Return to original position 3419Q KE 430B series BE 438B 1 Place the felt support as shown in the illustration so as not to clamp the felt 2 Press the felt and the wick gently as shown in the illustration 3421Q 3420Q 3447Q ...

Page 95: ...rop surface is approximately 0 8 mm 3422Q 3424Q 3425Q Tip of the rotary hook 1 Needle bar thread guide 2 Needle 3 Set screw 4 Treble hook assy Set screws 5 Set screws 2 pcs Turn the machine pulley to align the tip of the rotary hook with the needle center line Then tighten the set screw to adjust the clearance between the needle and the tip of the rotary hook to 0 01 0 08 mm 6 Hook stopper setting...

Page 96: ... then use the screws to install it together with the feed bracket guide plate Tack length feed slide block Carry out the adjustment in 5 24 Adjusting the home position before installing the feed plate Refer to 4 20 Work clamp arm mechanism Applying grease Be careful not to drop these three ball bearings when installing the work clamp arm assembly Secure the work clamp arm support shaft with the se...

Page 97: ... of the feed bracket assembly and then use the screws to install it together with the feed bracket guide plate Tack length feed slide block Refer to 4 20 Work clamp arm mechanism Applying grease First place onto A then insert into B and place onto C 1 Feed bracket assy 2 Feed bracket guide plate 3 Screws 8 pcs 4 Rod end 5 Tack width feed shaft 6 Set screw 7 Rubber cap 8 Feed plate 9 Screws 2 pcs 1...

Page 98: ...on of the work clamp arm assembly and feed plate Refer to 4 20 Work clamp arm mechanism Applying grease 3430Q 2 X feed cover Secure the work clamp arm support shaft with the set screw so that the bottom of the work clamp arm support plate and the ball bearings touch when the work clamp is raised 3 Y feed cover 4 Feed bracket assy 5 Spacers 2 pcs 6 Retainer assys 2 pcs 7 Feed bracket guide shaft as...

Page 99: ...ce as shown in the illustration and then install the feed bracket assembly and feed bracket guide plate R KE 430B 430C series 92 Tack width regulator Seen from below block assy Y feed lever cover Feed guide slide block 1 Feed bracket assy 3432Q 2 Feed bracket guide plate R 3 Flat screws 2 pcs 3 Pass the Y feed lever cover through the slot in the arm bed and then insert the tack width regulator blo...

Page 100: ...e position before installing the feed plate Refer to 4 20 Work clamp arm mechanism Applying grease 3434Q 3433Q Refer to 4 20 Work clamp arm mechanism Applying grease 11 Feed bracket cover 12 Feed plate 13 Plain washers 2 pcs 14 Bolts 2 pcs 15 Work clamp arm assy 16 Washers 2 pcs 17 Bolts 2 pcs 18 Cylinder support Pneumatic spec only 19 Bolts 2 pcs Pneumatic spec only Work clamp arm assembly instal...

Page 101: ... 4 20 Work clamp arm mechanism Applying grease 1 Feed bracket assy 2 Feed bracket guide plate 3 Screws 8 pcs 4 Rod end 5 Tack width feed shaft 6 Set screw 7 Rubber cap 8 Feed plate 9 Screws 2 pcs 10 Work clamp felt 11 Button clamp holder support 12 Plain washers 2 pcs 13 Bolts 2 pcs 14 Button clamp holder 15 Button clamp holder shaft 16 Set screws 2 pcs 17 Nuts 2 pcs Adjusting screw Carry out the ...

Page 102: ... 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 Sliding portion of the work clamp lever B 4 and lever shaft bush 5 and work clamp lever A 6 KE 431B 431C 3 Round portion of the work clamp arm lever plate 7 4 Bearing ball of the work clamp arm support shaft 8 KE 430B 430C 431B 431C 433B KE 434B 434C pneu...

Page 103: ...4 ASSEMBLY KE 432B 432C Apply grease to the portions indicated by the arrows KE 430B 430C series 96 3440Q BE 438B 438C Apply grease to the portions indicated by the arrows 3441Q ...

Page 104: ...er screws 2 pcs Insert this part of the belt cover into the upper cover install it with the two screws and then tighten the upper cover screw 5 Face plate assy 6 Screws 3 pcs 7 Eye guard assy KE 430B 430C series 97 8 Screws 2 pcs 9 Bed cover R 10 Screws 4 pcs 11 Bed cover LR 12 Screw 13 Bolts 2 pcs 14 Bed cover LF 15 Screws 4 pcs 16 Frame side cover 17 Screws 4 pcs 18 Top cover 19 Plain washers 3 ...

Page 105: ...ace cover assy 10 Plain washers 2 pcs 2 Loosen the four screws and make fine adjustments to the height of the needle plate auxiliary plate so that it is at the same height as the needle plate 11 Wave washers 2 pcs 12 Shoulder screws 2 pcs 13 Face plate assy 14 Screws 3 pcs 15 Bolts 2 pcs 16 Eye guard assy 17 Screws 2 pcs 18 Bed cover R 3445Q 19 Screws 4 pcs Insert this part of the belt cover into ...

Page 106: ...h the face plate side or the pulley side from above as this could cause the machine head to topple over which may result in personal injury or damage to the machine Use only the proper replacement parts as specified by Brother If any safety devices have been removed be absolutely sure to re install them to their original positions and check that they operate correctly before using the machine Any ...

Page 107: ...sen the screw 2 and move the driver 3 to adjust so that the tip of the rotary hook is aligned with the needle center line KE 484C Turn the machine pulley to raise the needle bar from the lowest position until the lowest reference line on the needle reference line B is aligned with the lower edge of the needle bar bush 1 Then loosen the set screw 2 and move the rotary hook to adjust so that the tip...

Page 108: ...le 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 2557Q 0138Q Turn the machine pulley to align the tip of the rotary hook with the needle center line Then loosen the set screw 1 and turn the eccentric shaft 2 to adjust so that the clearance betwe...

Page 109: ... 432C 3562Q BE 438B 438C 3452Q 1 Remove the arm assembly 1 the feed plate 2 and the needle plate 3 Remove the button clamp assembly 1 the feed plate 2 and the needle plate 3 BE 438B 438C 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 thr...

Page 110: ...bbin case holder position bracket KE 484C Approx 0 8mm 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 103 ...

Page 111: ...is sluggish when the work clamp 4 is being raised and lowered it may not be possible to increase the work clamp 4 lift amount If the work clamp 4 cannot be raised or lowered error code E 61 or E 63 will be displayed ５ ８ Adjusting the work clamp lift amount KE 432B 432C The maximum work clamp lift amount is 17 mm from the top of the needle plate when the machine is stopped The lift amount is adjust...

Page 112: ... presser arm lever plate 2 and to the sliding part of the work clamp 3 grease is already applied at the time of shipment and check that the movement becomes easier If the work clamp 3 cannot be raised or lowered error code E 61 or E 63 will be displayed Check that there is a gap between the presser arm lever plate 2 and the presser plate 4 when the work clamp 3 is lowered Pneumatic type 3454Q 17 m...

Page 113: ...f the needle plate The lift amount is adjusted 10 1 0 mm at the time of shipment KE 430B 430C series 106 max 2666Q 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 ...

Page 114: ...mp spring Lower the work clamp then place the adjusting ring 3 in the hole of the frame remove the tip of the adjusting screw from the lever holder 4 and remove the work clamp spring 5 2569Q 2570Q ５ １２ Adjusting the holding pressure BE 438B 438C 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...

Page 115: ...ork clamp is narrowed Note however that if the presser closing roller 3 is moved closer than necessary the operation of the presser closing lever 1 may be impaired 3 4mm 8 9mm 2574Q 2573Q 2 By loosening the nut 6 and turning the stop lever adjusting screw 7 adjust the stop lever 4 so that it separates from the stop position adjusting plate 5 when the work clamp is elevated 8 9 mm above the surface...

Page 116: ...6C 1 Turn the pulley by hand to set the work clamp 1 to its lowest point 3563Q 2 Loosen screw 2 set the bottom of the work clamp 1 lightly against the work piece and then tighten screw 2 Note If the work clamp is lowered too far the work piece will shift when sewing Also if the work clamp is too high skipped stitches may occur 3 Turn the pulley by hand and make sure the needle enters the center of...

Page 117: ... 2 and open the stepping cover 3 2 Loosen the nut 4 and adjust the stepping work clamp connecting rod 5 position If you would like to increase the work clamp lift move the stepping work clamp connecting rod 5 up and if you would like to decrease it move the stepping work clamp connecting rod 5 down 3 Remove the face plate and turn the pulley by hand to set the work clamp to its lowest point Loosen...

Page 118: ...p or down to adjust so that the clearance between the tip of the needle and the top of the wiper is 2 0 5 mm when the link assembly C 3 of the work clamp lifter mechanism is pushed and the thread wiper 4 has passed below the needle This adjustment should be made while the sewing machine is stopped Be careful not to turn the machine pulley otherwise the tip of the needle will move 3 Remove the rubb...

Page 119: ...ve 2 Loosen the two bolts 5 and move the wiper solenoid cover 6 up or down so that the thread wiper is approximately 30 mm from the needle when it is at the standby position Stepping foot specifications Needle plate 3463Q 2726Q 2727Q 2725Q 1 While the sewing machine is stopped loosen the set screw 3 and move the thread wiper arm assembly 4 up or down to adjust so that the clearance between the nee...

Page 120: ...wiper is 2 0 5 mm when the thread wiper connecting rod lever 1 is pushed up and the thread wiper 2 has passed below the needle This adjustment should be made while the sewing machine is stopped Be careful not to turn the machine pulley otherwise the tip of the needle will move 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...

Page 121: ...p amount 5mm 0mm 0mm 5mm 0mm 5mm 3467Q Become less Thread take up amount stroke Become greater 2560Q Loosen the screw 2 and move the stopper 3 57 nut 3 to adjust the operating angle of the thread take up solenoid 4 To reduce the thread take up amount move the stopper 3 upward To increase the thread take up amount move the stopper 3 downward Note If the stroke of the thread take up lever 1 is short...

Page 122: ...hermore 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 484C At the time of shipment from the factory the thread take up amount stroke of the thread take up lever 1 is set to the standard setting of 7 mm You may need to adjust this setting depending on the sewing conditions to prevent the thread f...

Page 123: ...ller 3 into the groove of the thread trimmer cam 4 4 In this condition turn the machine pulley to align the position of the roller 3 with the mark on the thread trimmer cam 4 2563Q 2562Q 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 mov...

Page 124: ...e movable knife 1 is pushed to the machine pulley side so that there is no play KE 430B series 3206Q 3468Q 3207Q 3505Q 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 the...

Page 125: ...necting rod lever pin 8 2945Q 3469Q 4 Remove the movable knife 9 and replace it with a new one At this time check that the movable knife 9 and the fixed knife 10 cut the thread cleanly If necessary adjust by using the appropriate movable knife washer 11 supplied as accessories Apply grease to the outside of the collar 12 at this time 5 Install the fixed knife 10 at a distance of 0 5 mm from the ne...

Page 126: ... pin 7 3470Q 2947Q 4 Remove the movable knife 8 and replace it with a new one At this time check that the movable knife 8 and the fixed knife 9 cut the thread cleanly If necessary adjust by using the appropriate movable knife washer 10 supplied as accessories Apply grease to the outside of the collar 11 at this time 5 Install the fixed knife 9 at a distance of 0 5 mm from the needle hole plate 12 ...

Page 127: ...ver pin 9 3210Q 3209Q 3208Q 2615Q 5 Remove the movable knife 10 and replace it with a new one At this time check that the movable knife 10 and the fixed knife 11 cut the thread cleanly If necessary adjust by using the appropriate movable knife washer 12 supplied as accessories Apply grease to the outside of the collar 13 at this time 6 Install the fixed knife 11 at a distance of 0 5 mm from the ne...

Page 128: ...ing edge Fig 1 Fixed knife Movable knife 0149Q 0150Q A After the movable knife and fixed knife are properly engaged tighten the screw as shown in Fig 1 B Turn the movable knife in the direction of the arrow while the screw is still tightened C Loosen the screw 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 ...

Page 129: ...he thread driving lever 2 and the driving lever stopper 3 is 0 25 0 05 mm 4 Turn the machine pulley so that the set screw 8 at the front of the thread trimmer cam 7 in the direction of rotation is facing upward and then push the plunger 10 of the thread trimmer solenoid 9 in as far as it will go and check that it returns smoothly when the roller 11 is in the slot 5 Loosen the two screws 12 and adj...

Page 130: ...lay at the end of the driver 4 to 0 05 0 12 mm and tighten the set screw 1 KE 484C Tip of the rotary hook 3479Q 3478Q 3477Q 3476Q 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 123 ...

Page 131: ...nd the button clamp assembly 2 BE 438B 438C 2 Remove the two rubber caps 3 and loosen the two screws 4 of the solenoid setting plate B 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 display...

Page 132: ... the X SCALE indicator 4 on the operation panel is illuminated hold down the TEST switch 5 and press the RESET switch 6 to activate input sensor check mode 5 Press the SELECT switch 7 to illuminate the COUNTER indicator 8 The display 9 will show the work clamp signal status ON OFF 6 Loosen the bolt 11 and move the sensor perceive plate 12 forward or back to adjust so that the work clamp signal is ...

Page 133: ...power switch 3 Press the SELECT switch 4 until the PROGRAM NO indicator illuminates 4 Press the DISPLAY SET switches 5 until the program number 0 is flashing in the display window then depress the foot switch The display will stop flashing and illuminate steadily and the feed mechanism will move to the origin points for X and Y feed C 2 Connect the programmer connector 6 to the operation panel 3 T...

Page 134: ...g adjustments Note Be careful not to let the needle touch the home position standard plate A 3493Q Seen from the side Y direction X direction Y direction B C X direction 3492Q 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 127 ...

Page 135: ...e left Turn the home position dog for feed lever X to the back Turn the home position dog for feed lever X to the front Adjusting the Y direction A B C Needle drops in front of point a Needle drops behind point a Needle drops in front of point a Needle drops behind point a Turn the home position dog for feed cam Y to the right Turn the home position dog for feed cam Y to the left Move the home pos...

Page 136: ...een the needle and the feed mechanism is adjusted so that the feed mechanism starts operating after the needle comes out of the material sewn and stops before the needle penetrates the material Note The screw 6 at the D mark is an adjusting screw for the needle down detection function and is adjusted to match the feed timing so it should not be loosened The screw 7 is a screw for detecting the mac...

Page 137: ...d 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 130 ...

Page 138: ...434C 435B 435C 436B 436C 484C The work clamp for the BAS 311F can be used Replace the feed bar guide cover 1 with the feed bar guide cover assembly LL 2 optional Then change the installation position for the presser arm assembly 3 from the standard installation position A to installation position B To alternate use between the normal work clamp and the BAS 311F work clamp Use the optional work cla...

Page 139: ...h the control knob 6 downward to lock it 3 If water stands in the bottle of the integrator 1 turn the drain cock 7 in the direction indicated by an arrow to drain the water ５ ３１ Adjustment of inner clamping device Adjustment of the positioning plates Loosen the screws 2 and adjust the position of the positioning plate R 3 so that the label 1 can be evenly laid out between the front and back seams ...

Page 140: ...id specifications Incorrect position of work clamp arm lever plate button clamp holder hook assembly Pneumatic specifications Incorrect position of work clamp arm lever Adjust the work clamp button clamp lift amount P 104 P 105 P 106 Work clamp does not close 432 Incorrect position of presser closing roller Check whether stop lever is engaged with stop position adjusting plate or not and adjust th...

Page 141: ... the affected part Clearance between needle and rotary hook tip is too great Adjust the needle clearance P 101 Incorrect needle and rotary hook timing Adjust the needle bar lift amount P 100 Driver is contacting needle more than is necessary except KE 484C Adjust the driver needle guard P 101 Needle is bent Replace the needle Needle is installed incorrectly Install the needle correctly Instruction...

Page 142: ... race thread guide is parating the threads insufficiently except KE 484C se Adjust the position of the shuttle race thread guide P 102 Upper thread is not properly tight Adjust the upper thread tension P 5 Uneven needle thread Adjust the sub tension Instruction manual Needle thread is too long Adjust the thread take up lever stroke P 114 P 115 Poor seam finish on reverse side of material Needle is...

Page 143: ...switch for pneumatic This helps to prevent thread breakage caused by friction when using synthetic threads Fill the tank with silicone oil 100mm2 s The switch has an independent left work clamp switch left side right work clamp switch center and start switch right side Emergency stop switch Work clamp plate OT KE 435 436 If the emergency stop switch has been pressed during sewing the machine can b...

Page 144: ...umatic type needle cooler which prevents the thread breakage due to heat It is particularly useful when sewing thicker materials and when sewing at high speeds The thread wiper is driven by a pneumatic cylinder It can be used when the thread cannot be pulled out from the material when sewing extremely thick materials Programmer KE 436 PS 3000 Programming software for electronic pattern sewer This ...

Page 145: ...the cooling fan of the control box operates be careful not to get caught in it When separating or rejoining connectors and measuring something be careful not to cut your fingers on metal parts such as heat sinks and covers ８ ２ Components inside the control box and the operation panel The following are brief explanations of components inside the control box See control circuit block diagram at the ...

Page 146: ...se the specified ones listed below No Part name Part code When a fuse has blown 1 G fuse 5AFB quick melting type 5A 250V S08030 000 The feed mechanism and work clamp do not operate Error E A0 is displayed E A1 KE 436B 436C 2 G fuse 7AFB quick melting type 7A 250V S48580 000 The machine motor does not turn Error E 20 is displayed E 20 KE 436B 436C 3 Fuse 6A glass tube fuse 6A 250V 153242 000 The po...

Page 147: ...tion or sufficient contact 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 140 ...

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 141 ...

Page 149: ... Outside of the panel KE 436B 436C Programmer cord 3593Q Programmer and programmer circuit board KE 436B 436C Programmer PROM PG LCD LCD inverter Programmer PCB LCD contrast VR 3594Q Operation panel KE 430B 430C series 142 ...

Page 150: ...36B 436C The work clamp does not operate Error E 61 is displayed solenoid specification only Not used with pneumatic specifications Forward feed does not operate correctly Error E A0 is displayed E A1 KE 436B 436C Sideways feed does not operate correctly Error E A0 is displayed E A1 KE 436B 436C 3654Q 3655Q 3656Q 2 Work clamp lifter and thread trimmer mechanisms Problem Connector No and position T...

Page 151: ...correct Error E 20 is displayed E 20 KE 436B 436C Error E 50 is displayed E 22 KE 436B 436C 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 The machine motor does not run Motor operation is unstable Needle up stop position is not correct Error E 20 is displayed E 20...

Page 152: ...mer is not lit Inverter for P3 LCD 3666Q 3667Q 5 Others Problem Connector No and position The DC fan motor does not run Error E 70 is displayed E c1 KE 436B 436C Error E F1 is displayed E F1 KE 436B 436C The machine does not operate Error E 17 is displayed E 16 KE 436B 436C 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 ...

Page 153: ...ion is strange Any switch does not have any effect The power indicator is not illuminated Error E E1 E E2 or E E3 is displayed KE 434 pneumatic specification KE 435 436 484C The work clamp does not operate The stepping foot does not operate 3672Q 3673Q KE 430B 430C series 146 ...

Page 154: ...tomatically lift after sewing is completed DIPA 2 Pedal mode is switched See 8 8 Setting the work clamp mode DIPA 3 User program mode is available DIPA 4 DIPA 5 The work clamp does not rise automatically when a split is found DIPA 6 Displays the enlargement reduction ratio in millimeter units instead of as a percentage After changing this setting be sure to carry out the auto clear operation by re...

Page 155: ... Clamping force output is produced Inner clamping device available as an option DIPA 7 DIPA 8 Thread breakage detector device is activated available as an option DIP switch B Switch Motion when set to ON DIPB 1 Single split mode activated DIPB 2 DIPB 3 Thread is not trimmed after an emergency stop DIPB 4 Needle cooler output is produced Needle cooler available as an option DIPB 5 When a rotating t...

Page 156: ...m DIP 3 DIP 4 Last two stitches are sewn at a low speed of 700 rpm DIP 5 First two stitches are sewn at a low speed of 400 rpm DIP 6 Low speed sewing is not performed at the start of sewing DIP 7 The motor operates in reverse when the upper shaft stops to return the needle bar to close to its highest position NOTE Maximum area for the sewing data is increased DIP 8 KE 436B 436C During an emergency...

Page 157: ... the two digits at the left of the display window 3 to the corresponding number 00 to 4F of the function shown in the table below that you would like to select 4 For Nos 00 to 2F the two spaces at the right in the display window will change from to ON when the BOBBIN WIND switch 2 is pressed When it is pressed again the two spaces will change from ON back to For Nos 30 to 4F the two spaces at the ...

Page 158: ...the sewing frame memo 0A Work clamp does not close KE 432 memo 0b Work clamp closes when the machine starts KE 432 memo 0c Needle stops in up position during emergency stop EMERGENCY STOP switch is available as an option except for KE 434 435 484C memo 0d The bar tacking stitches with a pitch of less than 1 mm are also enlarged and reduced Normally stitches with a pitch of less than 1 mm are not e...

Page 159: ...read is not trimmed when an emergency stop occurs during sewing EMERGENCY STOP switch is available as an option except for KE 434 435 484C Memory switches 20 2F Initial value Switch Motion when set to ON Solenoid Pneumatic memo 20 memo 21 Rotating type thread breakage detector operates Device is available by special order memo 22 When thread breakage detection is operating sensitivity is decreased...

Page 160: ...15 Slow 0 KE 430 431 432 433B 434 435 484C The setting value 1 number of stitches are sewn at the speed set by memo 35 at the sewing start No low speed sewing if set to 0 memo 34 0 5 Stitch 1 BE 438 The setting value 1 number of stitches are sewn at the speed set by memo 35 at the sewing start No low speed sewing if set to 0 memo 35 3 9 100rpm 4 Changes the sewing start speed for the number of sti...

Page 161: ...10ms 10 KE 435 Changes the standby time after the stepping foot is raised 0 10 0 Solenoid specifications The work clamp operating mode can be changed When set to 0 the mode is selected according to the settings for DIP switches A 1 and A 2 Refer to 8 8 Setting the work clamp mode for details of the available modes 0 Pneumatic specifications memo 42 0 13 5 Inner clamping device specifications memo ...

Page 162: ...screen 5 will change from OFF to ON when the STEP BACK switch 2 is pressed When it is pressed again the display screen will change from ON back to OFF For Nos 30 to 3F the number appearing in the display screen 5 can be changed by turning the dial 6 while pressing the STEP BACK switch 2 If the B T CHANGE switch 7 is pressed at this time all memory switch settings will be changed to OFF 5 Press the...

Page 163: ...e as an option memo 0c memo 0d Clearing the emergency stop switch action is carried out using the STEP BACK switch Note The factory default setting is ON and it changes to ON when all memory settings are cleared ON memo 0E Test feeding is carried out at the same speed as normal sewing For checking feed operation memo 0F After sewing is finished the work clamp automatically opens and closes once pr...

Page 164: ...y shows the temperature of the heat sink on the main circuit board instead of the voltage Memory switches 30 3F Memory switches 30 to 3F are set to numeric values instead of ON and OFF Turn the dial while pressing the STEP BACK switch to change the values Switch No Possible setting range Units Initial value Explanation memo 30 1 999 10ms 10 Time until feed mechanism starts moving after work clamp ...

Page 165: ...aximum speed remains constant 1 Speed limit is increased for the given sewing pitch and the sewing speed for that pitch is increased 2 Standard 3 Speed limit is decreased for the given sewing pitch and the sewing speed for that pitch is decreased Note If sewing slippage occurs in places where a large sewing pitch is used reduce the setting to 3 Furthermore sewing slippage may occur in some cases i...

Page 166: ...en using two pedal operation Starts with right left 8 Three pedals Option The left pedal is used to raise and lower the left presser and the right center pedal is used to raise and lower the right presser The start right pedal is used to start sewing Furthermore when DIP switch A 2 is at ON and if one presser is already lowered pressing the start pedal causes the other presser to be lowered and th...

Page 167: ... labels at this time 2 After checking that everything is positioned correctly depress the work clamp pedal to the 2nd step to firmly clamp the article being sewn 3 Press the start pedal to start sewing Other hose connections and corresponding operations The hoses can be connected in combinations other than the one shown above so that only one side of the work clamp operates in light work clamp mod...

Page 168: ...433B and BE 438 or OFF KE 434 435 484C when home position detected When SPEED indicator is illuminated Synchronizer 1 When COUNTER indicator is illuminated Presser sensor ON when presser is lowered When PROGRAM NO indicator is illuminated Work clamp closed sensor ON when work clamp is open KE 432 only 1 The synchronizer display simultaneously displays the needle up signal 3rd digit the 24 section ...

Page 169: ...tor is illuminated Needle up signal synchronizer When B T COUNTER indicator is illuminated 24 section signal synchronizer When SPLIT ON indicator is illuminated Needle down signal synchronizer KE 430B 430C series 162 3 If the settings for DIP switch A at the side of the operation panel are changed at this time the number of the changed switch will appear in the top row of the program number displa...

Page 170: ... TEST switch 3 press the R W switch 4 4 If the input voltage is normal the input voltage conditions will be shown in the display window 5 as indicated in the table above Specifications Display Notes 200V 090 110 220V 100 120 230V 105 125 100 is displayed when the input voltage is 200 V 100V 380V 400V 415V 100 120 110 is displayed when the input voltage is 100V for 100 V specs 380V for 380 V specs ...

Page 171: ...ings KE 436B 436C 3621Q 3622Q KE 430 431 432 433B 434 435 484C BE 438B While pressing the RESET switch 1 turn on the power This will clear all of the memory setting KE 436B 436C While pressing the R W switch 1 turn on the power This will clear all of the memory setting Note This operation causes memory switches to be returned to their initial settings and user program settings to be cleared If the...

Page 172: ... digit Version number Versions A B and C are replaced with 1 2 and 3 respectively 3rd and 4th digits Special specification 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 A X SCALE Main PROM MN c Y SCALE Motor PROM IM Version number indication example PROM label KE430C MN C In...

Page 173: ...git Version number Versions A B and C are replaced with 1 2 and 3 respectively 2 Every time the MENU switch 2 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 A X SCALE Main PROM MN b Y SCALE Motor PROM IM c SPEED Programmer PROM PG d B T COUNTER Panel PROM PL Version number indication example PROM label KE436...

Page 174: ...nnected properly Turn off the power and check if connectors P3 is disconnected E 14 Thread breakage detected Turn the EMERGENCY STOP switch clockwise to release the lock and then press the RESET switch to reset the error You can then press the BOBBIN WIND switch to repeat the sewing E 15 Air pressure drop error Turn off the power and check If drops in air pressure are not being detected clear all ...

Page 175: ...oes not operate Turn off the power and then check if thread is tangled in the thread wiper E 70 Cooling fan does not operate Turn off the power and then check if the cooling fan is blocked with scraps of thread E 80 Motor PROM is not correctly inserted Turn off the power and check E 81 Foot switch was depressed when the power was turned on Turn off the power and check E 82 An operation panel switc...

Page 176: ...to release the lock and then press the STEP BACK RESET switch to reset the error You can then press the STEP BACK RESET switch to repeat the sewing E 12 Emergency stop switch is activated or its connection is not correct Turn off power and check it E 13 Defective connection of model selection connector Turn off power and check connector P3 E 14 Foot switch was depressed or connection of foot switc...

Page 177: ...in immediately after it was turned off Turn off power and check voltage After turning off the power wait 30 seconds or more before turning it on again E 91 Power supply voltage is extremely high Turn off power and check voltage E A0 Start switch was pressed when there was no sewing available data Read sewing data again E A1 Can not detect home position X Y feed or connection of home position senso...

Page 178: ...ols and their meanings Manual operation Set up operation or condition Switch operation The procedure to follow continues on the next page Yes or no decision making process OFF Turning off of the power switch 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 171 ...

Page 179: ...8 ELECTRIC MECHANISM 3675Q KE 430B 430C series 172 ...

Page 180: ...8 ELECTRIC MECHANISM 3676Q KE 430B 430C series 173 ...

Page 181: ...8 ELECTRIC MECHANISM 3677Q KE 430B 430C series 174 ...

Page 182: ...8 ELECTRIC MECHANISM ８ １４ １ 3678Q KE 430B 430C series 175 ...

Page 183: ...r than that for the measurement In addition always keep in mind that a high voltage remains for about 5 minutes after power is turned off Injury While the power is turned on the cooling fan of the control box operates be careful not to get caught in it When separating or rejoining connectors and measuring something be careful not to cut your fingers on metal parts such as heat sinks and covers 2 W...

Page 184: ...e Separate P4 ACIN connectors on the power supply circuit board and check there is continuity between pins 1 and 2 in the connector on the cable For 200V 220V and 230V specifications this is not necessary Conversion transformer 3 Power supply cable defective Separate P4 ACIN connectors on the power supply circuit board turn on the power and measure the voltage across pins 1 and 2 in the connector ...

Page 185: ...t least 5 minutes and then rejoin P9 connectors Power supply circuit board 6 Main circuit board defective With P9 POWER connectors plugged in on the main circuit board turn on the power and measure the voltage across pins 1 and 3 in the connector on the cable If it is 5V the power circuit board is not defective After measurement turn off the power Main circuit board Check that P8 PANEL connectors ...

Page 186: ...ircuit board 5 Power supply voltage drops abnormally when error code E 90 appears on the display window E 90 KE 436B 436C a Make sure that the power supply voltage of the wall socket is within 10 of the voltage specification b See 1 2 and 1 3 6 Power supply voltage rises abnormally when error code E 91 appears on the display window E 91 KE 436B 436C a Make sure that the power supply voltage of the...

Page 187: ... select connector Error status 3 No switches on the operation panel are not activated Probable causes Check repair adjust Parts to be replaced Check that P8 PANEL connectors of the main circuit board and P1 PANEL connectors of the panel circuit board are plugged in Panel circuit board Panel cord 1 Panel PCB defective KE 436B 436C Check that P20 RSPORT connectors of the main circuit board and P5 DR...

Page 188: ...d For pneumatic specification check the continuity be tween pins 3 and 4 The continuity in each case should be normally or 0 when the foot switch is depressed 2 Any cord in the control box is defective Insert the connector checked above open the control box and check the continuity between pins 1 and 2 pins 3 and 4 in the connector P17 FOOT on the main circuit board For pneumatic specification che...

Page 189: ...ejoin P9 connectors Power supply circuit board 3 Home position sensor is defec tive when the work clamp moves in an unexpected direction and error code E A0 appears on the display window E A1 KE 436B 436C a Turn the poewr switch off and then on again and move the work clamp to near the home position by hand If the home position sensor LED is lit the home position sensor is not defective b Check th...

Page 190: ...utside of the contorl box and check the continuity between pins 1 and 2 and pins 7 and 8 in the connector on the cord For pneumatic specification check the continuity be tween pins 3 and 4 The continuity in each case should be normally or 0 when the foot switch is depressed First position Connector on the cord Work clamp Second position Start Second position work clamp Pneumatic only 3636Q Solenoi...

Page 191: ...P14 AIR on the main circuit board and measure the resistance between the following pins in the connector on the cord Pins 1 and 10 air valve for right work clamp 3641Q Pins 2 and 10 air valve for left work clamp Pins 3 and 10 air valve for presser foot The resistance in each case should be 300 400 Air valve harness assembly 5 The main circuit board IC is defective Disconnect connector P14 AIR from...

Page 192: ...BE 438 Measure the resistance between pins 1 and 12 with the same method as above If the needle oscillates at its maximum limits the TEST indicator and its cord are not defective Panel PCB or panel cable assembly Red Black 3 Main circuit board defective Main circuit board 3645Q 3644Q Red Black 4 Panel PCB defective KE 436B 436C Check that P20 RSPORT connectors of the main circuit board and P5 DRV ...

Page 193: ...rcuit board with the same polarity as shown in the left figure Use of a digital meter is prohibited If the pointer indicates 10K 30k on the x 1k range the main circuit board is not defective After measurement rejoin P12 connectors If the pointer does not fuses No 2 3 and 4 may be blown Examine them Main circuit board 4 Short cycle operation has been run continuously so the sewing machine has over ...

Page 194: ...op as soon as the machine is started resulting in this error Error status 17 The machine cannot produce correct stitches Probable causes Check repair adjust Parts to be replaced 1 Synchronizer defective See 16 1 2 Pulse motor is defective or mechanical adjustment is not appropriate when stitching deviates from what it should be a See 8 4 b If stitching deviates because of insufficient pressure of ...

Page 195: ...l parts perform the following items 19 2 and 19 3 2 Thread take up solenoid defective Separate P4 SOL2 connectors on the main circuit board and then measure the resistance between pins 1 and 2 in the connector on the cable If the resistance is 12 14 the solenoid is not defective 3 Main circuit board defective 3649Q With connector P4 SOL2 on the main circuit board removed turn on the power perform ...

Page 196: ...ins 4 and 5 and pins 10 and 11 is DC 15 18 V it is OK Power supply circuit board 5 Main circuit board defective Main circuit board 15 18V for each Main circuit board 3651Q 6 Motor defective Motor Error status 21 Programming can not be made KE 436B 436C only Probable causes Check repair adjust Parts to be replaced 1 The programmer connector and its cable are defective Remove connector P2 PGM on the...

Page 197: ...8 ELECTRIC MECHANISM ８ １５ Control circuit block diagram 3680Q KE 430B 430C series 190 ...

Page 198: ...SERVICE MANUAL Printed in Japan KE 430B 430C series I3080844B 2003 09 B 1 ...

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