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JUKI MB-373N/BR10 Engineer's Manual
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JUKI MB-373N/BR10 Engineer's Manual

JUKI MB-373N/BR10 Engineer's Manual

Single-thread, chainstitch, button sewing machine with an automatic thread trimmer and a button feeder
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asue«n
Single-thread,
Chainstitch,
Button Sewing Machine with an
Automatic
Thread Trimmer
(and a Button Feeder)
MB-373N/BRIO
ENGINEER'S
MANUAL
No.
1-2
1993.
6

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Summary of Contents for JUKI MB-373N/BR10

  • Page 1 asue«n Single-thread, Chainstitch, Button Sewing Machine with an Automatic Thread Trimmer (and a Button Feeder) MB-373N/BRIO ENGINEER'S MANUAL 1993.
  • Page 2 ThisEngineer •sManual i s writtenfor Lhe technical personnel whoareresponsible f or theservice andmaintenance of Lhe machines. The IrscructionManual f or these machines for themaintcnance personnel. a ndoperators atanapparel f actorycontains dctailed opaüg instructions. A ndthismanual &sc-ribes " Howto Adjust"."Results o f Improper A djusment",and otherinformation whichüe by the Instruction Manual.
  • Page 3 PRECAUTION Aslong asthemachineis setto the2-holedbuttonsewingmode,4-holedbuttonsarenot applicable andvice versa. Payattention to the sewing mode before starting sewing buttons. When changingbuttonsto be sewn to thosehaveholes in different positionsfrom the button usedat present,replacethe button carrier with the one suitable for the buttons to be sewn. Refer to the description of ''DC. OPTIONAL PARTS" on page27 for the kE1dsof button carrier.
  • Page 4 CONTENTS SPECIFICATIONS 1. Mcchanical specifications Electrical specifications CONFIGURATION OPERATION 111. Power to thc machine and connectionof power supply 2. Operation panel (I) 3. Operating procedure 4. Operating the switchesfor normal sewingwork HOW TO SET THE DIGITAL SWITCHES AND DIP SWITCHES ERROR MESSAGE AND INSPECTION...
  • Page 5 SPECIFICATIONS Mechanical specifications MB-373NZ088 Machine head used Stitch system I -Needle, single-thread chainstitch Sewing speed Nomal 1,500 s.p.m. O-6S mm (0-0.256") (L) x 2.2 - 6.5 mm (0.087"-0.256") Sewing size Lift of button clamp Max. 12 mm (0.472") Feed system By lateral andlongitudinal feed carts Needle bar stroke...
  • Page 6 CONFIGURATION Fig. 2 1 Power switch Buuon clamp unit Sewing machine Concol box (CPU) Index unit Operation panel(I ) Pedestal Motor Button feeder Tum spinner oscillating arm motor knob Operationpanel (2) Thread stand Pedal controller Machine table...
  • Page 7 OPERATION 1. Power to the machine and connection of power supply Connect Lhepower cable coming from the control box of the machine to the electric power supply (R.S.T.E). Before comecting the machine to the power supply, be sureto confirm that the sewing machine tums in its normal rotational direction. to confirm the normal rotational...
  • Page 8 Operation panel (1) Fig. 3-3 Function Symbol andnameof switch Lightsupwhenthepowerswitchis turnedON. If it fails tolight up.checkthepowerplug O Powerindicatorlamp(green) connectionandre-tum ON the power switch. This lamp operatesin two different ways. Alarm indicator lamp (red) It slowlyflashes o nand offwhen afailure of thedevice occurs.(Refer t o"V. TROUBLE NDICATIONS AND INSPECTION' on page11.) It quickly flasheson and off when the button sensormountedon tie index unit continuouslydetectsbutton feeding failure over 10 times.
  • Page 9 Symbol and name of switch Function Mode selector switch Automaticsewingmode Thesewing m aclfrle a nd thebutton feeder operate withinterlocked. Under t his operation mode, depressing the pedal lowers Lhe button clamp and m akes the sewing machine start sewing abutton. When t he machine completes sewing ofthe button.
  • Page 10 Operating procedure Double-stepped action of the button clamp The foot pedal of LheBR-IO operatesin the way asshown in thetimc chart given below. When you find that thematerial hasbeen improperly positioned or abuttonhasnot beenplaced on thebuttonclamp with thebutton clamp lowered, you canreleasethebutton clamp from its lowest position by returning the pedal to its homeposition.
  • Page 11 lv. HOW TOSET THEDIGITALSWITCHES ANDDIPSWTTCHES Loos two screw O and o pen panel@ inFig. 4-1. N ow, change the setting Of t he switches. a.n-BK1 O FREQ FUSE Fig. 4-1...
  • Page 12 DIP switch function and setting of the digital switch switch Function Condnuous cycle mode Double-steppedaction of thebutton clamp Adjustment mode Action without button The switches have been factory-set as shown above O..ON x..OFF at the time of delivery. A ..The machineperformstheoperations described in thenextpageandbeyondin accordance with combinations of the DIP S'*itches.
  • Page 13 Automatic sewing mode Prospectivebutton feedingmode Function Application Setpc Note 3) Note 8) Double- Suited to be used • Normal0Feratimfunction • Norrnal function step exclusive for point • Provided with a sensorwhich detects • Prospective buttmfeeding function stitching suchas ccnplet.im of fine positioning of a (Not providedwith a sensor w hich of the sewinghip pockets...
  • Page 14 tsitionotDIPswitches DEG.SW-I DEG.SW-2 Cautions Note 8): Length of Limeduring which Note 9): High.ed q*raüng function the button carrier operates • function meansthat a button always restsOnthe O.20SEC S -9 0.20SEC Shutterplate. 0.50 • Sincethe button carrier Operates with the shutterplate 0.80 closed,a load is likely to be applied to Lheshutter 1.20...
  • Page 15 ERROR MESSAGE AND INSPECTION (1) Alarm Nov indication If the alarm indicator lamp onthe operation panel starts f lashing onand offslowly, the relevant alarm number indicated onthe front f ace of thecontrolboxwill beshownontheoperation panel. Troubles Causes Corrective measures to reset NonnalQeraüon(givenduringLhe normal stand-bystaxeof the sewing machine)
  • Page 16 (4) Replacing the fuse (2A) (6.3A) (2A) (2A) Youmayfindfivefuses ( Fl, F3through F 6)asillustrated i nthefigure. ( Remove thefra.rne cover o nthefrontface of•—he cont:ol b ox, andreplacethc fuses.) (5) Inspectionof the sensors andthe driving sources should be carried out under the "adjustment mode".
  • Page 17 VI. ADJUSTMENTS (1) Adjusting the button feeder The button feederis energizedby turning ON thepower to OUK' the main unit. Set the button feederadjusting variable resistor (Refer to page5 - ) to its internediate position. If the button feeder does not VIYates adequately, turn sensitivity adjustment variable resistor O until it reaches the position to allow the button feeder to vibrate most.
  • Page 18 (2)4 Button guide Appropriate clearance 21between the button guide O andthe buttonis approximately 3 (0.118")to 4 mm (0.157"). Lmsen O, andadjusttheclearance t o the value. screw Appropriate c learance n between thelowersurface of Lhe button guideandthetracksurfaceof thefeederbowl is0.3 (0.012")to 0.7mm 0.5mm (0.02").
  • Page 19 (3) Adjusting the fine positioning (3)-1Adjusting theclearance between thecarrierpin and the shutter plate Bloc Loosen s crews@and O . Adjust c learancet between t hecarrier pinand shutter plate O to0.1 (0.004") to0.3 mm (0.012") by turning a djusting stoperO. (Make adjusting stopperO come inclosecontact w iththebutton carrier.) Then tighten s crew O tofixadjusting stope O inplace.
  • Page 20 (3)-3 Adjusting the clearance between work attachment and the carrier pin Loosen screw O Adjustclearance2 between work attachment Fine positioning solenoid and the carrier pin to O. mm (0.004") or less aslong asthe work Rotary rod attachment does not come in ajntact with the carrier pin when thework attachmentis brought LO its lowest position by the iron core of fine positioning solenoid.
  • Page 21 (5) Adjusting the feed plate of the index unit Adjusting the feedplate of the index unit Confirm firstthat t heindex mit isiniLS origin. Remove the screw which isused t ofix the feed plaze. Loosen screws O, and match the notch i nchoice ring Button guide toone ofthe holes ( large, medium orsmall) i nthe feed p late Screw...
  • Page 22 (6) Centering the button clamp jaw lever and the button carrier Return button carrier to its origin. then, Lilt the machine head. Loosen threelocking bolts in Lhemain body frame and bolt O (VI-4). Raise the machine head. Turn the baob of the spinner oscillatingarrn motoruntil carrierplate O on which the button is placed is brought to its front endposidon.
  • Page 23 (8) Adjusting the opening amount of the button clamp jaw levers This sewing machine hasbeendesigned to maketheSutton clampjaw leversautomaticallyopento releasethe fl.-äshed buttonat theverymoment w henthebuttonhasbeen the material. ne opening arnount ofLhe b utton c larnpjaw Z vers to releasethe buttoncan be adjusted. Manuallyturn spinner o scillatingarm motorknob, clamp release a rmwillmove andbutton clamp jawlevawill open.
  • Page 24 VII. SENSOR MECHANISM AND ADJUSTMENT Button detecting function at the positioning unit This sensor detects a button at the button positioning point. When there is a button at the button positioning point, the button stans to be finely positioned. Wnen thcrc is nc buuon, Lhefeed plate repeatsindexing until a butron is brought to the button positioning point.
  • Page 25 4. Adjusting the position of sensor (Setthe modeselector switch on the operation panelto the step-operation mode O O (1) Adjusting the start origin switch (SORG) Startorigin switchO (hereinafter c alled"SORG")which incorporatesa photo micro sensor(PM•T53B) is the sensorto detectthe returning action of the foot pedal. Adjust so thattheSORGis shieldedwhen thepaial is returned to its home position after it has been depressedto make the button clamp come down.
  • Page 26 (4) Adjusting the index origin switch (IORG) Index origin switch O (hereinaftercalled "IORG") which incorporatesaproximity sensor (GXL-8F) is thesensortodetect the feedplate when its feedingoperation is stopped. TOadjust, loosenscrew andadjustaclearanceof 0.8(0.031") to 1.2 (0.047") is Frovidedbetween thedetecting plane of the IORG andthe outsideperiphery of GENEVA wheel 1.2 mm (0.031•...
  • Page 27 (Caution) • The function of the RFIN is to detect whether the button has been completely set on the carrier pin and to open/close the shutter by turning ON or OFF according to the detected result (in accordance with the difference between the outside diameter of the button and that of the attachment). •...
  • Page 28 vm. REPLACING THE COMPONENTS AND POSITIONING THEM (1) Replacingthe button carrier and positioning it TOreplace thebutton carrier, l oosen screw@, t henremove the buttoncarrier.Replace thebuttoncarrierwithonewith aproper center-to-center distance. and fit the button carrier with a proper center-to-center distance to the eccentric cam @, and simultaneously make thetopface of thecarrier a)rneincontact with Lhenuto.
  • Page 29 Toadjust t hcposition ofthcfeed plate, c onfirmfirstthatthe Aligns with matchmarks pinion isinitsorigin and attach t he feed plate atthe position Pinion whcrc L he m atchmark (countersinking) onthe pinion aligns withthe matchmark onthe feedplate. Atthis time, a lign the hole inthe pan withthchole inthe feed p late onthe triple pawl.
  • Page 30 How to replace the shutter plate Replace theshutter platein thewholeunit. If theshutter p latehasbroken or deformed andit needs tobereplaced, r eplaceit in thewhole unit (shutterplate asm.). Parts required for replacement Shutterplate asm.(165-67166) @ Sliderblock(165-73305) Replacement procedure Removethescrew which fixesthetop cover, andraisethe topcover. Removethehexagonsocketheadcap screwwhich fixes the shutter plateslider, replacethe shut<...
  • Page 31 OPTIONAL PARTS Button carrier For 4-holed button For 2-holed button Shape button carrier Dimension Dimension Dimension Dimension Part No. Code Part No. Code B (mm) A (mm) A (mrn) B (mm) 165-57902 165-58009 type 165-90507 165-87305 ore e type 165-90606 165-87404 165-87501 165-87503...
  • Page 32 2) Optional parts Part No. Name of part Shape Work attachment, large 16557704 9.5 mm (0.374*) Work attachment (with a groove) 18257006 Bottom surface 8 mm (0.315") Work attachment (with a recessed end) 18257105 g mm (0.315") 18257204 Work attachment (with a recessed end) 9.5 mm (0.37C) 18200956 Feed plate asrrl%413.5 mm (0.531 ")
  • Page 33 Application The shap ofthis work attachmen isas same as that O f t he standard D.•pe ofwork attachment mdhas alarge b ottom diameta. Itis suited to largebuttons of whichdiarneter is approximately mm(0.709"). 'Whe replacin Lhe s tandar work a ttachmen with this work a ttachment, re-adjust the fine positioning...
  • Page 34 Sewing marble buttons or the like ne BRIO hasbeendcsigncd for thc sewing Of flat buttons including buttons for men's shirts. If you want to sew marble buttons or someotherspecial-shaped buttons,replace thepartslistedbelow to improvecffcctivcnessOfthebutton feeder. Shapeof buttons (marblebuttonC>, scmi-marbte shell button) Name of pan (part No.) Caution LO be taken at the time of replacement In-line arrangement p late A (18213207)
  • Page 35 MEMO -31-...
  • Page 36 STANDARD ADJUSTMENT Standard adjustment Standard adjustment Height of the needle bar Thesecond marker lineas counted from the lowest one ofthe marker lines engraved onLhe n eedle bar s hould a lign withthe bottom endof thelowerbushing whentheneedle b aris brought t o thelowest p ositionof its stroke. for TORI Lower bushing Engraved marker fine...
  • Page 37 How to adjust Results of improper adjustment Loosenthescrewin theneedlebartake-up, a ndadjust t heheightof theneedle If the position of the needle bar is too high, bÜ appropriately. stitch skipping may result. On theotherhand.if theposition cf theneedle bar is too low, theneedle may comein contact with thelooper.
  • Page 38 Standard adjustment (3) Adjusting the yoke slide O Timing of lateral motionof theyoke slide The height of the descendingneedle bar should be LO 15 to 18 mm (0.591" LO 0.709") when theyoke slide starts moving from its left position to the right. Needle @Timing of the longitudinalmotionof theyokeslide.
  • Page 39 How to adjust Results of improper adjustment Adjusttheyoke slidetriangular camin therotational direction. If thetimingto maketheyokeslidestartits actionis too late,threadmay remain in the needle after trirnming. thiscase, t lreadbreakage, isolated idling loopandimproperly tensed stitches mayresult- Ontheother h and, i f thetimingistoo needle maycomeincontact w iththeyokeslide. @ Adjust t heyoke slide in the rotational direction.
  • Page 40 Standard adjustment (6) Adjusting the thread pull-off lever If theendof thread is &awm fromarrowholeA inthebuttonafter s ewing. c hange t heposition of tread pull-offleverblockO LO theleft. Movetheülread pull-offleverblockO to theright when thethread endcomes o urfromarrowholeB. (7) Adjust the nipper The clearanceof 0.8 to 1.2(0.031" to 0.047") should beprovided between the nipper and the block when the machine is in operation.
  • Page 41 How to adjust Resultsof improper adjustment Adjustmen of Lhe thread p ull-off l ever O , insen ascrew&iver through a n The adjustment of the thread pull-off lever opening i n the machine armside cover ( left), l oosen s crew @ andadjust changes in accordance with thetypeofmaterial, position Ofthread pull-off l ever b lock O tothe leftorthe righL thicknzs Ofbutton.typeOffread, etc.
  • Page 42 Standard adjustment (9) Adjusting the stop-motion hook The clearanceof mm (0.335") should beprovided betweenthe stop-motionlever and thestop-motionhook. 8.5 mm (0.335") (10) Work pressing force Adjust thepressure adjustment n ut so that it is positioned22 mm (0.866") above the bottom Of the bu. 22 mm (0.86€•) (11) Adjusting the button clamp lifting plate Theengagement depth between thebuttonclarap lifting plateandthelifting hookwhenthemachine has completely entered into...
  • Page 43 Results of improper adjustment How to adjust If the clearmce is not adjusted to 8-5 mm Adjust theclearance between thestop-motionleverandthestop-motion hook (0.335 the compressed a.rnomtof tie spring to 8.5mm (0335") usingthestop-motionspringadjustment n ut. may change. UllU111 If the work pressing force is frsufficient, the Adjust thework pressingforceby turningthepressure adjustment n ut.
  • Page 44 Standard adjustment (12) Adjusting the timing of clutch Accepuble range of loation of marker line Stop-moton Top end Rotatiorzl direcöcn Stop-tmosoncarn fig. 1 At Lhe laststitchOfthesewing andbeforethestop-motion, t opendof thestop-motion levershouldlie onLhe area between the two markerlinesengraved onthestop-motionCam, w henlettingout Lhe clutch. Furthermore, defective stop-motion should n otoccur and abnormal stop-motion noise s hould n ot b egenerated during o ptation.
  • Page 45 How to adjust Results of improper adjustment l) Makethesewing mwhineenter intoits normal s top-motion p osition. Be sureto turn OFF the power to the sewing machine in advance. Ohecorrect s top-motion p osition is oblained whenthestop-motion h ook is fully lowered untiltheleverisaligned withclaw@. (Fig.2)) 2) Then.checkthestitchadjustingcam.
  • Page 46 Standard adjustment (13) Adjusting the clearance between the button clamp lifting lever and the adjusting screw A clearanceOf0.5 nun (0.019") should be between thebutton clamp lifting lever andthe adjusting screw when the machine is in iß normal stop-motion state. (0.019') (14) Adjusting the spring guide shaft and the stop-motion cushion spring When themachine is in its normal stop-motionstate,the stop-motion cushionspring shouldbe...
  • Page 47 How to adjust Results of improper adjustment Adjustthecleaance betweentheendofbuttonclamp lifting leverO andadjusting screwO to OSmm (0.019"). Thentightenadjusting screwnut O. Loosen s crewc andcarryouttheadjustment byraising.nowering spring guide If the clearance is larger than 16.5 mm (0.650") shaftO. After theadjustment, b esureto securelytightenscrewO. to 17mm (0.669").
  • Page 48 Standard adjustment (16)Adjustingthe heightof the movingknifethreadseparationnail A clearanceof 0.5 to 0.7 mm (0.019" to 0.028") must be provided betweenthetopendof threadseparation nailO andlooper The end of the thread separation nail 0.7 mm (O.C19• - 0.028") (17)Adjusting the number of stitches (18) Adjusting the LSW (stop-motion) switch When themachine s top in itsstop-motion s tate.
  • Page 49 How to adjust Results of improper adjustment If Lheheight cf Lhethread separation nail is not correct, bend the thread If the height of the thread sepuation nail is separationnail until it is properly positioned. excessive,the nail is incapableof separating the thread on the needle side from ülat on tie materialside.
  • Page 50 Standard adjustment (19) Positioning the wiper Whenthemachineis in itsnormalstop-motion State, a longitudinal c learance o f 3 to4 mm(O. 1 18"tc0.157")should beprovided between the wiperandthe tipof the needle ( longitudinal position o f the wiper) w hen the wiper p asses under t he needle. and a lateral c learance of 18to20 (0.709"to0.787")shouldbeprovidedbetween thewiperandthecen terof theneedleQateral position Ofthewiper).
  • Page 51 How to adjust Results of improper adjustment Loosen screw of wiper i nstalling base@and a djust thelongitudinal position Of the wiper. Loosen four screws of thewiper magnet,andadjustthelateralpositionof the wiper by moving wiper magnet • (Caution) Although the stroke of thewiper magnetcanbechanged from 9 mm (0.354")by turning nut O, do not makethe stroke larger than 9 mm (0.354") because the attraction of the magnet will be changed accordingly.
  • Page 52 2. Correction of troubles in sewing (I) Thread breakage O Thelongitudinal positionof theyokeslideisnotcorrect.Asaresult. t helooperisthreaded t wice. • Move the yokeslide cam back orforthsothat t he blade point O fthelooper g oes t hrough t hecenter o fthetriangle o f thread at 9th or 10th stitch.
  • Page 53 (3) Stitch skipping Adjust thetiming betweentheneedleandthelooperpropaly. @ When sewing aheavy-weightmaterial orhardmaterial, make theneedleguide come contactwitl theneedleby thedepth of 0.1 to 0.2 (0.004" to 0.008"). 0.1 —0.2 mm (0.004' 0.008") (4) Thread slips off the needle eyelet (Yead slips off the needle eyelet at Che sew•ü'lg start.) Increasetheamount of motion of the threadpull-off lever.
  • Page 54 Mechanical troubles and corrective measures (1)' The sewing machine is defective Thestop—motion noiseisverylow, andthesewing machine Stops b efore thepredetermined Stop positionis reached. o Timing to let out theclutch is too early. (Adjust thedriving pulley presserplate.) o Change t heposition of thestitchadjusting c amatthetW,e of "stop-motion" fromtheengraved marker l ine toward left. (2) The thread trimmer is defective (The button clamp cannotbe raised.) O The hook of thebutton clamp lifting plate is wom out.
  • Page 55 4. Troubles and corrective measures with respect to thread trimming Trouble Cause Corrective measure ne moving knife thread separation l. %read trimming faihre Adjust the position of die moving hife. nail doesnot separate thethreadonthe Refer to the descriptiongiven in the "(15) Positioning fabric.
  • Page 56 IX. TROUBLESAND CORRECTIVE MEASURES 1. • Mechanical components Ched(ing proædure ard adjustment Cause Trouble Cea:a the rotary rod and the carrier of therotary rod is notaligned A button is not fitted on thecarrier pin pin correctly. with that of the carrier pin. afterfinepositioningof thebuttonhas been carried out.
  • Page 57 Trouble Cause procedure and adjustment The buttonis not finely positioned triple pawl dog is improperly Adjusttheposition of triplepawldog evenwhenthebuttonis placedat the positioned. Asaresult. thesensorfails properly. triplepawlsection. Finepositioningis LOdetect a button. performed with no button at the paw) section. Thetriplepawlfailstomove smoothly. Replace t hetriplepawl a sm.
  • Page 58 Checkilg procedure and adjustrnent Trouble Cause Check that the solenoid has been Triple pawl moves too fast and the me buttonis raisedwhenit is clarnped adjusted as in Fig. 9-1. output level Of the solenoid is by the triple paw) at the button (Refer to page 19 for detailed excessive.
  • Page 59 Trouble Cause Ched(hg procedure aM adju±nent from die fed plateto ure Bucon is caughtin between die feed Adjast thepositionof dE feda. button feder is too large. pla:e and die button feder. button is not smoothly carried to Sliguly lift the button feeder. die feedplate.
  • Page 60 CtEd(hg procedure ani aillßxnent Cause Trouble Securely t ighten screw O. Screw which fixes the feeda bowl Butons in the button feder Ue not loosa•s. srnooüüy run. Fig. 9-3 Adjust thepositionof the sensitivity Defectivepositionof tre saßitivity adjusmment vziable resistor. adjustrna•nt vaiable resistor. Position the feederbowl at theposition Feeder bowl comes in contact with where it doesnot come...
  • Page 61 Electrical components Trouble Cause (I) Cause (2) Checking procedure and adjustment Turning ON the power The machine will not be energized. The power plug is disconnected. Connect the power plug. (The sewing machine motor will not rotate.) The sewing machine motor rotates, however, the power indicator The ac power source is not supplied to the transforner.
  • Page 62 Checking procedure and adjustment Cause (2) Cause (I) Trouble The+24V breakeron thepowercircuit boardhastripped. Reset the breaker. A +24V is not supplied to the CPU circuit board. ERROR occurs. Spinner oscillating error Checkthetransformer for outputvoltageof 18.5Vac. Ifthe voltage A 18.5Vac is not suppliedto thepowercircuit board. Cl'hemotoris kept in its ON stateexceedingthepredeterminedlength is not outPUt,replace the transforrner.
  • Page 63 Cause (I) Trouble Cause (2) Checking procedure and adjustment Normal operation (sewing machine) Check whetherthe sewing machinehas beenset to a proper sewing machine does not operate. Select t hecorrectoperationmode.andre-startthesewingmachine. operation mode. CheckwhethertheDIP 3 is settoits ON position. Set the DIP 3 to its OFF position. Check whether the sewing machine is in its stop-motion state.
  • Page 64 Checking procedure and adjustment Trouble Cause (I) Cause (2) Normal operation (button feeder) Select the correct operation mode, andre-start the sewing machine. Manual operation is inoperative. Check wheLherthe sewing machine has been set to a proper operation mode. Check whether the DIP 3 is setto its ON position. Set the DIP 3 to its OFF position.
  • Page 65 Cause (1) Checking procedure and adjustment Trouble Cause (2) Check whether the sewing machinehasbeenset to a proper Betcon feeder fails to operate. Select the automatic mode, and re-start the sewing machine. operation mode. Check whether the DIP 4 is set to its ON psition. Set the DIP 4 to its OFF position.
  • Page 66 XII.CIRCUIT DIAGRAM Block diagram PARTS FEEDER GBR107910AO J 22 PANEL GBR 107810AO Capacitor GBR 107510AO IOOOOpF MB SENSOR 63 v J 21 GBRIO 7720AO MOTOR p 13 p 12 CONTROLER POWER SENSOR GBRIOBIIOAO GBR108410BO GBR107610AO MOTOR GBR108510AO POWER GBR 1071 IOAA GBRt07710AO GBR107420AA (e) (GBR107440AOfor B type)
  • Page 67 Control cable connection diagram CONTROLER White IN 7 Black Transformer A (B) asm. Purple AC IN 8 3'F power supply cable asm. ( GBR 107420AA reen (G8R108210AO) Purple GBR 1083 IOAO owerl POWER BF junction cable asm. supply Yellow TRANS FORMER PARTS Power...
  • Page 68 Electric circuit diagram POWER Sewing machinemotor A type(ForB type.primaryvoltagechanges.)Note 1 p 11 Orange AC240 7.5V AC 7.5 Orange AC 220 Light blue (B type Black) Purple Yellow AC200 18.5V AC 18.5 Yellow 18.5V AC IOO p 13 AC 100 Greenly 10000B 63 v Blue...
  • Page 69 Power circuit board circuit diagram AC7.5V S4VB20 AVRI 3052V AC 7.5V 100" 2200pF 2200JF 2 GND AC18 SV SIOVB20 3 +24V AC18.5V +24V +*IOOOO ÅF GND 2 - 65 -...
  • Page 70 Panel assembly circuit diagram p 23 PON LED Symbol MODE Automatic sewing In±pendent sewing MD4(N) Small-lot sewing MODE MD2(N) Prospective b utton rmde MDI(N) Discharging WITH —ON (Com) (NC) WI THOUT — OFF CROSS OVER STITCH MAN(N) RST(N) —66 —...
  • Page 71 Machine head input/output circuit diagram Stop-motion switch OUTI HA000830000 Main circuit STP(N) G NDI D2E7-5GL22-S +24 V Starfrug magnet GBR106110AO DC24V 230W +24 V Wiper magnet MAZ088010AO DC24V (Note) I. P24-8,-9, and 10 pins are used for spare input 2. D2EV-5GL22-S When the switch is ON: OUTPUT LOW VOLT When the switch is OFF: OUTPUT HIGH VOLT 3.
  • Page 72 BR sensor assembly circuit diagram SORG SORG Two-stepped switch origin switch HD0003GOOOO PM-T53B L — START Start switch HD000360000 PM-T53B — Red r — +24vz RFIN White I RFIN(N) Fine positioning completion switch Black I HD000380000 GXL-8F p 35 Red r +24VZ T 53B Inner circuit...
  • Page 73 Magnet motor circuit board Fine positioner lowering magnet DC motor asm. for spinner oscillating arm GBR 10852000 GBR 108590AO DC24V DC24V(TD2722H-204P) (14.310) Shutter magnet DC mobr asm. for indexer GBR 10853000 GBR 108560AO SHMG 20 Q DC24V DC 24V(TG-35C-AH-lO) ( 8n) Positioningmagnet Buttondampjaw leverlifüngmagnet GBR 10854000...
  • Page 74 XIII. TIMING CHART No button on the shutterplate (Standard stateat the time of delivery) unit [msec.) First button Second button 8 Stitches Approx. 350 Sewing performance of peraton 16 stitches Approx. 670 sewing machine Stop Starting magnet 150 1 Wiper magnet Button clamp jaw lever [Ifting magnet Spinner oscillating...
  • Page 75 A button is placedon the shutter plate Unit lmsec.) First button Second button Sewing performance of stitches Approx. 350 Operation sewing machine 16 stitchesApprox. 670 Stop Starting magnet Wiper magnet Adjustment of Sewing machine lock Button clamp jaw lever timing for 200 lifting magnet Spinneroscillating arm motor...