LK3-B438E INSTRUCTION MANUAL ELECTRONIC LOCKSTITCH BUTTON SEWER

LK3-B438E INSTRUCTION MANUAL Plas rad this manual bfor using th machin. Plas kp this manual ithin asy rach for uick rfrnc. ELECTRONIC LOCKSTITCH BUTTON SEWER

Thank you vry much for buying a BROTHER sing machin. Bfor using your n machin, plas rad th safty instructions blo and th xplanations givn in th instruction manual. With industrial sing machins, it is normal to carry out ork hil positiond dirctly in front of moving parts such as th ndl and thrad tak-up lvr, and consuntly thr is alays a dangr of injury that can b causd by ths parts. Follo th instructions from training prsonnl and instructors rgarding saf and corrct opration bfor oprating th machin so that you ill kno ho to us it corrctly. SAFETY INSTRUCTIONS 1. Safty indications and thir manings This instruction manual and th indications and symbols that ar usd on th machin itslf ar providd in ordr to nsur saf opration of this machin and to prvnt accidnts and injury to yourslf or othr popl. Th manings of ths indications and symbols ar givn blo. Indications DANGER CAUTION Th instructions hich follo this trm indicat situations hr failur to follo th instructions ill almost crtainly rsult in dath or svr injury. Th instructions hich follo this trm indicat situations hr failur to follo th instructions could caus injury hn using th machin or physical damag to uipmnt and surroundings. Symbols... This symbol ( ) indicats somthing that you should b carful of. Th pictur insid th triangl indicats th natur of th caution that must b takn. (For xampl, th symbol at lft mans bar of injury.)... This symbol ( ) indicats somthing that you must not do.... This symbol ( ) indicats somthing that you must do. Th pictur insid th circl indicats th natur of th thing that must b don. (For xampl, th symbol at lft mans you must mak th ground connction.) i

2. Nots on safty DANGER Wait at last 5 minuts aftr turning off th por sitch and disconncting th por cord from th all outlt bfor opning th fac plat of th control box. Touching aras hr high voltags ar prsnt can rsult in svr injury. Us th sing machin in an ara hich is fr from sourcs of strong lctrical nois such as highfruncy ldrs. Sourcs of strong lctrical nois may caus problms ith corrct opration. Any fluctuations in th por supply voltag should b ithin ±10% of th ratd voltag for th machin. Voltag fluctuations hich ar gratr than this may caus problms ith corrct opration. Th por supply capacity should b gratr than th ruirmnts for th sing machin's lctrical consumption. Insufficint por supply capacity may caus problms ith corrct opration. CAUTION Environmntal ruirmnts Th ambint tmpratur should b ithin th rang of 5 C to 35 C during us. Tmpraturs hich ar lor or highr than this may caus problms ith corrct opration. Th rlativ humidity should b ithin th rang of 45% to 85% during us, and no d formation should occur in any dvics. Excssivly dry or humid nvironmnts and d formation may caus problms ith corrct opration. Avoid xposur to dirct sunlight during us. Exposur to dirct sunlight may caus problms ith corrct opration. In th vnt of an lctrical storm, turn off th por and disconnct th por cord from th all outlt. Lightning may caus problms ith corrct opration. Installation Machin installation should only b carrid out by a ualifid tchnician. Contact your Brothr dalr or a ualifid lctrician for any lctrical ork that may nd to b don. Th sing machin ighs mor than 47 kg. Th installation should b carrid out by to or mor popl. Do not connct th por cord until installation is complt, othris th machin may oprat if th foot sitch is prssd by mistak, hich could rsult in injury. Hold th machin had ith both hands hn tilting it back or rturning it to its original position. Furthmor, aftr tilring back th machin had, do not push th fac plat sid or th pully sid from abov, as this could caus th machin had to toppl ovr, hich may rsult in prsonal injury or damag to th machin. B sur to connct th ground. If th ground connction is not scur, you run a high risk of rciving a srious lctric shock, and problms ith corrct opration may also occur. All cords should b scurd at last 25 mm aay from any moving parts. Furthrmor, do not xcssivly bnd th cords or scur thm too firmly ith stapls, othris thr is th dangr that fir or lctric shocks could occur. Install th blt covrs to th machin had and motor. If using a ork tabl hich has castrs, th castrs should b scurd in such a ay so that thy cannot mov. B sur to ar protctiv goggls and glovs hn handling th lubricating oil and gras, so that thy do not gt into your ys or onto your skin, othris inflammation can rsult. Furthrmor, do not drink th oil or at th gras undr any circumstancs, as thy can caus vomiting and diarrhoa. Kp th oil out of th rach of childrn. ii

This sing machin should only b usd by oprators ho hav rcivd th ncssary training in saf us bforhand. Th sing machin should not b usd for any applications othr than sing. B sur to ar protctiv goggls hn using th machin. If goggls ar not orn, thr is th dangr that if a ndl braks, parts of th brokn ndl may ntr your ys and injury may rsult. St th ndl to th ndl up stop position bfor turning on th por. If this is not don, th ipr may strik th ndl, hich might caus th ndl to brak. Turn off th por sitch at th folloing tims, othris th machin may oprat if th foot sitch is prssd by mistak, hich could rsult in injury. Whn thrading th ndl Whn rplacing th ndl and bobbin Whn not using th machin and hn laving th machin unattndd St th ndl to th ndl up stop position bfor turning on th por. If this is not don, th ipr may strik th ndl, hich might caus th ndl to brak. Turn off th por sitch bfor carrying out claning, othris th machin may oprat if th foot sitch is prssd by mistak, hich could rsult in injury. CAUTION Sing Claning Maintnanc and inspction If using a ork tabl hich has castrs, th castrs should b scurd in such a ay so that thy cannot mov. Attach all safty dvics bfor using th sing machin. If th machin is usd ithout ths dvics attachd, injury may rsult. Do not touch any of th moving parts or prss any objcts against th machin hil sing, as this may rsult in prsonal injury or damag to th machin. If an rror occurs in machin, or if abnormal noiss or smlls ar noticd, immdiatly turn off th por sitch. Thn contact your narst Brothr dalr or a ualifid tchnician. If th machin dvlops a problm, contact your narst Brothr dalr or a ualifid tchnician. B sur to ar protctiv goggls and glovs hn handling th lubricating oil and gras, so that thy do not gt into your ys or onto your skin, othris inflammation can rsult. Furthrmor, do not drink th oil or at th gras undr any circumstancs, as thy can caus vomiting and diarrhoa. Kp th oil out of th rach of childrn. Maintnanc and inspction of th sing machin should only b carrid out by a ualifid tchnician. Ask your Brothr dalr or a ualifid lctrician to carry out any maintnanc and inspction of th lctrical systm. St th ndl to th ndl up stop position bfor turning on th por. If this is not don, th ipr may strik th ndl, hich might caus th ndl to brak. Turn off th por sitch and disconnct th por cord from th all outlt at th folloing tims, othris th machin may oprat if th foot sitch is prssd by mistak, hich could rsult in injury. Whn carrying out inspction, adjustmnt and maintnanc Whn rplacing consumabl parts such as th rotary hook If th por sitch nds to b lft on hn carrying out som adjustmnt, b xtrmly carful to obsrv all safty prcautions. Hold th machin had ith both hands hn tilting it back or rturning it to its original position. Furthrmor, aftr tilting back th machin had, do not push th fac plat sid or th pully sid from abov, as this could caus th machin had to toppl ovr, hich may rsult in prsonal injury or damag to th machin. Us only th propr rplacmnt parts as spcifid by Brothr. If any safty dvics hav bn rmovd, b absolutly sur to r-install thm to thir original positions and chck that thy oprat corrctly bfor using th machin. Any problms in machin opration hich rsult from unauthorizd modifications to th machin ill not b covrd by th arranty. iii

3. Warning labls Th folloing arning labls appar on th sing machin. Plas follo th instructions on th labls at all tims hn using th machin. If th labls hav bn rmovd or ar difficult to rad, plas contact your narst Brothr dalr. 1 Hazardous voltag ill caus injury. Turn off main sitch and ait 5 minuts bfor opning this covr. Hochspannung vrltzungsgfahr! Bitt schaltn si dn hauptschaltr aus und artn si 5 minutn, bvor si dis abdckung öffnn. Un voltag non adapté provou ds blssurs. Etindrl'intrruptur t attndr 5 minuts avantd' ouvrir l capot Un voltaj inadcuado pud provocar las hridas. Apagar l intrruptor principal y sprar 5 minutos ants d abrir sta cubirta. 2 Moving parts may caus injury. Oprat ith safty dvics. Turn off main sitch bfor thrading, changing bobbin and ndl, claning tc. Safty dvics Ey guard Fingr guard Thrad tak-up covr Thrad tak-up solnoid covr Blt covr Motor covr, tc. 3 B sur to connct th ground. If th ground connction is not scur, you run a high risk of rciving a srious lctric shock, and problms ith corrct opration may also occur. 4 Dirction of opration 4 Ey guard Thrad tak-up covr Thrad tak-up solnoid covr 2 Blt covr Fingr guard 3 1 Motor covr iv

CONTENTS 1. NAME OF EACH PART... 01 2. SPECIFICATIONS... 02 2-1. Spcifications... 2 2-2. Program list... 3 3. INSTALLATION... 06 3-1. Por tabl... 6 3-2. Installing th motor... 7 3-3. Installing th motor pully... 7 3-4. Installing th control box... 8 3-5. Installing th rubbr cushions... 9 3-6. Installing th oil pan... 9 3-7. Installing th cushions... 9 3-8. Installing th machin had... 10 3-9. Installing th had rst... 10 3-10. Installing th liuid cooling tank, optional... 10 3-11. Installing th opration panl... 11 3-12. Conncting th ground ir... 11 3-13. Conncting th cords... 12 3-14. Installing th V-blt... 13 3-15. Installing th blt covr... 14 3-16. Installing th foot sitch... 14 3-17. Installing th motor covr... 15 3-18. Installing th spool stand... 15 3-19. Installing th button tray... 15 3-20. Installing th y guard... 15 4. LUBRICATION... 16 4-1. Lubrication points... 16 5. OPERATION... 17 5-1. Nam and function of ach opration panl itm... 17 5-2. Oprating procdur... 19 6. CHECKING THE SEWING PATTERN... 20 7. CORRECT USE... 21 7-1. Slcting th ndl and thrad... 21 7-2. Installing th ndl... 21 7-3. Thrading th uppr thrad... 21 7-4. Winding th lor thrad... 22 7-5. Rplacing th bobbin cas and thrading th thrad... 23 7-6. Thrad tnsion rfrnc guid... 23 7-7. Insrting th button... 25 7-8. Adjusitng th button holdr... 25 7-9. Adjustmnt by th accssory spring... 25 8. SEWING... 26 9-2. Lubrication... 28 9-3. Draining th oil... 29 9-4. Claning th control box air inlt port... 29 9-5. Claning th y guard... 29 9-6. Chcking th ndl... 29 10.STANDARD ADJUSTMENTS... 30 10-1. Adjusting th ndl bar hight... 30 10-2. Adjusting th ndl bar lift amount... 30 10-3. Adjusting th drivr ndl guard... 31 10-4. Adjusting th ndl claranc... 31 10-5. Adjusting th shuttl rac thrad guid... 31 10-6. Adjusting th thrad tak-up amount... 32 10-7. Adjusting th movabl knif... 32 10-8. Adjusting th button clamp lift amount... 34 10-9. Adjusting th holding prssur... 35 10-10.Adjusting th position of th button holdr... 35 10-11.Adjusting th ndl up stop position... 36 10-12.Adjusting th thrad ippr... 36 10-13.Chcking th input snsor and DIP sitch input... 37 10-14.Chcking th input voltag... 38 10-15.Claring all mmory sttings... 38 10-16.Moving stitch pattrns... 39 11.USING THE COUNTERS... 40 11-1. Using th bobbin thrad countr... 40 11-2. Using th production countr... 40 12.CHANGING FUNCTIONS USING THE DIP SWITCHES... 41 12-1. Opration panl DIP sitchs... 41 12-2. Stting th prssr mod... 41 12-3. DIP sitchs insid th control box... 42 12-4. Using usr programs... 43 13.CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES... 45 13-1. Using th cycl sing function... 47 14.TABLE OF ERROR CODES... 49 15.GAUGE PARTS LIST... 51 16.TROUBLESHOOTING... 52 17.OPTIONAL PARTS... 55 9. MAINTENANCE AND INSPECTION... 27 9-1. Claning th rotary hook... 27

1. NAME OF EACH PART 1. NAME OF EACH PART i!2 o u!5 y!1!3!0 t!4 r Por sitch Control box Opration panl rfoot sitch tmotor ytnsion rlas lvr upully ispool stand othrad tak-up lvr Safty dvics;!0fingr guard!1ey guard!2thrad tak-up covr!3blt covr!4motor covr!5thrad tak-up solnoid covr 1

2. SPECIFICATIONS 2. SPECIFICATIONS 2-1. Spcifications Stitch formation Maximum sing spd Maximum pattrn siz Ndl Dimnsions of buttons that can b sn Button clamp hight Thrad knot Fd mchanism Stitch lngth Numbr of stitchs Maximum stitch numbr Work clamp liftr Rotary hook Wipr dvic Thrad trimmr dvic Thrad tak-up dvic Data storag mthod Numbr of usr programs Numbr of cycl programs Numbr of stord data Motor Wights Por sourc Singl ndl lock stitch 2,500rpm 0-6.4 0-6.4 mm TQ 1#12 Outr diamtr of button 8-30 mm (Us th optional button clamp B for diamtrs of 20 mm or gratr.) Spac btn th button hols 0-6.4 mm 13 mm max. Knot tid by ndl R-θ intrmittnt fd mchanism (puls-motor drivn mchanism) 0.1-10.0 mm Variabl (13, 15, 17, 19, 20, 22, 23, 24, 26, 27, 28, 30, 32, 34, 38 stitchs pr-st) 20,000 stitchs (including 10,000 stitchs hich can b addd) Solnoid typ Shuttl hook Standard uipmnt Standard uipmnt Standard uipmnt P-ROM (Any sing pattrn can b addd using BAS-PC/300.) 16 4 49 sing pattrns ar st alrady. (Up to 100 pattrns can b addd. Total numbr of stitchs of stord data hich can b addd is ithin 10,000.) Thr-phas 400W induction motor Machin had: 47kg, Opration panl: 0.6kg, Control box: 9-19kg (dpnding on dstination) Singl-phas 220-230V 3-phas 220, 380, 400, 415V Maximum lctric por consumption; 600VA 2

2. SPECIFICATIONS 2-2. Program list Sing pattrns ar limitd as shon in th tabl blo. (Any program is availabl as long as th ndl drops don in th hol of th button.) Program No. No. of button hols Sing pattrn No. of thrads No. of crossovr stitchs No. of stitchs Standard sing lngth X Standard sing idth Y 1 6 13 2 8 15 3 4 10 12 17 19 3.4mm 0mm 5 *1 2 16 23 6 *1 20 27 7 *2 6 13 23 *2 10 17 0mm 3.4mm 8 *2 12 19 9 *2 5-5-5 22 24 25 *2 *2 3 7-7-7 5-5-5 28 22 2.6mm 2.4mm 26 *2 7-7-7 28 10 6-6 1 20 11 8-8 1 24 12 4 8-8 3 26 13 10-10 1 28 27 12-12 1 32 3.4mm 3.4mm 14 *3 6-6 0 26 28 15 *3 *3 4 8-8 10-10 0 0 30 34 29 *3 12-12 0 38 3

2. SPECIFICATIONS Program No. No. of button hols Sing pattrn No. of thrads No. of crossovr stitchs No. of stitchs Standard sing lngth X Standard sing idth Y 16 6-5 1 19 17 8-7 1 23 30 10-9 1 27 18 6-6 1 20 19 31 8-8 10-10 1 1 24 28 3.4mm 3.4mm 45 12-12 1 32 20 *3 6-6 0 26 32 33 *3 *3 4 8-8 10-10 0 0 30 34 21 *2 6-6 1 20 *2 34 *2*3 22 10-10 6-6 1 0 28 26 2.4mm 3.4mm *2*3 35 10-10 0 34 46 6-6 1 20 47 48 8-8 10-10 1 1 24 28 3.4mm 3.4mm 49 12-12 1 32 * 1 Chck that th button hol diamtr is 2 mm or gratr bfor using th programs. * 2 Do not us th button liftr spring. * 3 Thrad is trimmd aftr sing of on sid is compltd, bcaus thr is no crossovr thrad to b sn. To continu sing to th nd, kp th foot sitch dprssd until sing of th othr sid starts, or prss th foot sitch onc mor aftr sing of th first sid is compltd. 4

2. SPECIFICATIONS Th folloing programs ruir th solnoid thrad ipr (OP). Program No. No. of button hols Sing pattrn No. of thrads No. of crossovr stitchs No. of stitchs Standard sing lngth X Standard sing idth Y 36 6-6 0 26 37 8-8 0 30 38 10-10 0 34 39 12-12 0 38 3.4mm 3.4mm 40 4 6-6 0 26 41 8-8 0 30 42 10-10 0 34 43 44 * * 6-6 10-10 0 0 26 34 2.4mm 3.4mm * 2 Do not us th button liftr spring. 5

3. INSTALLATION 3. INSTALLATION CAUTION Machin installation should only b carrid out by a ualifid tchnician. Contact your Brothr dalr or a ualifid lctrician for any lctrical ork that may nd to b don. Th sing machin had ighs mor than 47 kg. Th installation should b carrid out by to or mor popl. Do not connct th por cord until installation is complt, othris th machin may oprat if th foot sitch is dprssd by mistak, hich could rsult in injury. Hold th machin had ith both hands hn tilting it back or rturning it to its original position. Furthrmor, aftr tilting back th machin had, do not push th fac plat sid or th pully sid from abov, as this could caus th machin had to toppl ovr, hich may rsult in prsonal injury or damag to th machin. All cords should b scurd at last 25 mm aay from any moving parts. Furthrmor, do not xcssivly bnd th cabl or scur it too firmly stapls, othris thr is th dangr that fir or lctric shocks could occur. B sur to connct th ground. If th ground connction is not scur, you run th risk of rciving a srious lctric shock, and problms ith corrct opration may also occur. Install th blt covrs to th machin had and motor. 3-1. Por tabl Us th por tabl hich has bn spcially dsignd for ach sing machins. * If using a commrcially-availabl tabl, procss it as shon in th illustration blo. Tabl/ lgs assmbly Modl cod 127-V30-00001 NOTE: Th thicknss of th tabl should b at last 40 mm, and it should b strong nough to bar th ight and vibration of th sing machin. If th distanc A btn th insids of th lgs is lss than 740 mm, mov th control box installation position closr to th motor (B = 247 mm). Chck that th control box is at last 10 mm aay from th lg. If th control box and lg ar touching, it could caus th sing machin to oprat incorrctly. Motor Control Box Opration panl cord hol Countrbor dpth 23 Sction A-A dpth 5 6

3. INSTALLATION 3-2. Installing th motor Install th motor u to th ork tabl ith th four accssory bolts, cushions, cushion collars, flat ashrs r, spring ashrs t and nuts y. At that tim, fix by stting bolts a littl to th right of oval hol on motor. NOTE: Tightn th nuts y so that th claranc btn th tabl and th cushion collars is approximatly 1 mm. u r t y Tabl 1mm 3-3. Installing th motor pully Plac th motor pully onto th shaft of th motor so that th ky groov is alignd, and thn tightn th st scr so that th cntr of th V groov in th motor pully is alignd as closly as possibl ith th cntr of th blt hol in th por tabl. 7

3. INSTALLATION 3-4. Installing th control box!1!0 r t y i u o 3mm Tabl t Cushions ycushion collars u Rubbr collrs i Flat ashrs o Nuts!2!3 1. Rmov th 12 scrs, and thn opn th covrs (panl mounting assmbly and main P.C. board mounting plat ). NOTE: Whn opning th covr, hold it scurly so that it dos not fall don. 2. Install th control box ith th four accssory bolts r, cushions t, cushion collars y, rubbr collars u, flat ashrs i and nuts o as shon in th illustration abov. At this tim, lav a gap of approximatly 3 mm btn th ork tabl and th top of th box. * Us to nuts o at ach installation location, and mak sur that both nuts ar tightnd. 3. Clos th covrs (panl mounting assmbly and main P.C. board mounting plat ), and tightn thm ith th scrs. * Th main P.C. board mounting plat ill b opnd again during 3-13. Conncting th cords, so provisionally tightn it ith th scr. 4. Install th por sitch!0 ith th to scrs!1. 5. Scur th por sitch cord ith th thr stapls!2. 6. Pass th motor cord through th cord hol!3. 8

3. INSTALLATION 3-5. Installing th rubbr cushions Install th rubbr cushions ith th nails. 3-6. Installing th oil pan 1. Insrt th tabs of th oil pan into th hols for th cushions, and thn scur it in plac ith th fiv nails so that th oil pan is not at an angl. 2. Whil pushing th oil pan don from abov, scr in th oil containr r. r 3-7. Installing th cushions Plac th to cushions into th hols in th ork tabl so that th notchs ar alignd ith th tabs in th oil pan, and scur thm in plac ith th nails. 9

3. INSTALLATION 3-8. Installing th machin had u y 66 13 17 r t 1. Insrt th had hings into th machin had so that thy ar paralll, and thn scur thm ith th to st scrs. 2. Plac th machin had gntly on top of th rubbr cushions and cushions r. NOTE: Pull th cords t out as shon in th illustration abov in ordr to prvnt thm from bing clampd by th machin had. 3. Install th hing prssr y ith th to scrs u. 3-9. Installing th had rst Tap th had rst into th tabl hol. NOTE: Tap th had rst scurly into th tabl hol. 3-10.Installing th liuid cooling tank, optional 1. Rmov th rubbr plug, and thn push th liuid cooling tank. 2. Tightn it ith th st scr. 10

3. INSTALLATION 3-11. Installing th opration panl Th opration panl can b installd to ithr th top or bottom of th ork tabl. Top of ork tabl Bottom of ork tabl r r t Tabl t Tabl 1. Install th rar fram to th ork tabl (top or bottom) ith th four ood scrs. 2. Install th front fram to th rar fram ith th four scrs r. * Th vrtical orintation of th front fram is th sam hthr it is installd to th top or th bottom of th ork tabl. 3. Insrt th connctor cord t into th control box through th hol at th sid of th box. Rfr to 3-13. Conncting th cords for dtails on conncting th cord. 4. Scur th connctor cord t ith th stapls (in thr placs). 3-12. Conncting th ground ir CAUTION B sur to connct th ground. If th ground connction is not scur, you run th risk of rciving a srious lctric shock, and problms ith corrct opration may also occur. Rd Whit Black Yllo/Grn Connct to th por sitch. Hovr, th black ir is insulatd to th insid of th box and is not usd. Connct to ground 11

3. INSTALLATION 3-13. Conncting th cords!2!3 t P8 P1 P2 P3 o u i y!1!0 r P11 P4 P5 P6 P7 Machin had connctors Connction location No. of pins X, Y, Sing snsor 12-pin Synchronizr 5-pin Machin spcification 8-pin slct connctor Thrad tak-up solnoid 5-pin Prssr solnoid 4-pin Thrad trimmr solnoid Puls motor, Y 4-pin (blu) Puls motor, X 4-pin Opration panl 26-pin Uppr shaft motor 3-pin Cord mark z x c v b n m Non Non Connction location on circuit board P1 (ORG2) P2 (SYNCHRO) P3 (SELECT) P4 (SOL2) P5 (SOL) P6 (YPM) P7 (XPM) P8 (PANEL) P11 (UVW) 1. Gntly tilt back th machin had. NOTE: Aftr tilting back th machin had, do not push th fac sid or th pully sid from abov. 2. Pass th cords through th hol in th ork tabl. 3. Gntly rturn th machin had to its original position. 4. Rmov th six scrs, and thn opn th control box covr (main P.C. board mounting plat r). NOTE: Whn opning th covr, hold it scurly so that it dos not fall don. 5. Loosn th to scrs t,and thn opn th cord prssr plat y in th dirction of th hit arro and pass th cords through th opning. 6. Loosn th scr o, and thn attach th ground cord u for th machin had and th ground cord i for th opration panl as shon in th illustration. 7. Loosn th scr!1, and thn attach th ground cord!0 for th uppr shaft motor as shon in th illustration. 8. Scurly connct connctors P1 to P8 and P11 as indicatd in th tabl. 9. Scur th cords ith th cord clamps!2 and!3. 10. Clos th cord prssr plat y in th dirction of th black arro, and scur it by tightning th scrs t. NOTE: Chck that th cords do not gt pulld hn th machin had is tiltd back gntly. 11. Tightn th covr (main P.C. board mounting plat r) ith th six scrs. 12

3. INSTALLATION 3-14. Installing th V-blt r A Approx. 1mm B Approx. 9-10mm 10N 1. Gntly tilt back th machin had, and thn plac th V-blt into th V groovs on th machin had pully and th motor pully. NOTE: Aftr tilting back th machin had, do not push th fac plat sid or th pully sid from abov. 2. Gntly rturn th machin had to its original position. * B carful not to clamp th cords at this tim. 3. Provisionally install th accssory tnsion pully assmbly r ith th accssory flat ashr, spring ashr and bolt. 4. Adjust th blt tnsion by moving th tnsion pully assmbly to th right and lft so that thr is 9- -10 mm of dflction in th V-blt hn it is gntly pushd in th middl ith a forc of approximatly 10 N. Aftr adjusting, tightn th bolt A to scur th lft pully assmbly. 5. Mov th right tnsion pully so that thr is a gap of about 1 mm btn it and th V-blt, and thn tightn th bolt B to scur th right pully assmbly. NOTE: Us brothr spcifid V-blt (blt, VM). Th V-blt may strtch slightly hn it is first usd, so adjust th blt tnsion aftr about 3,000 cycls of us. Whn abov blt tnsion is k, this ill b caus of folloing problms; Nois & vibration bcom larg. Ndl up stop position bcoms unstabl. Error mssag [E-50] is displayd. Chck that th motor is positiond so that th V- blt is straight. (Fig.1) Sing machin V-blt Motor Fig.1 13

3. INSTALLATION 3-15. Installing th blt covr t r u y 1. Loosn th to scrs of th uppr covr and th to scrs r of bd covr L. 2. Insrt th blt covr t in th dirction of th arro, and thn scur it ith th to scrs, th to scrs r and th scr y. * Whn tilting back th machin had, loosn th scrs and r, rmov th scr y and thn rmov th blt covr t first. 3. Attach th rubbr plug u to th blt covr. 3-16. Installing th foot sitch [A] y u i r!1!0 o!2 t!3!6!4!5 [B]!7!8!9 1. Insrt th connctor of th foot sitch into th connctor of th control box. 2. Install th foot sitch to th ork tabl lg!2 ith foot sitch support plat A r, foot sitch support plat C t, th bolt y, spring ashr u, flat ashr i, bolt o, spring ashr!0 and flat ashr!1 as shon in Figur A. If foot sitch support plat B!3 is usd in a back-to-front position, it can b usd as shon in Figur. B. 1. Rmov th scr!4 and rubbr plug!5. * Not that th spring!6 ill com out hn th scr!4 is rmovd. 2. Turn foot sitch support plat B!3 back to front, and thn install it ith th bolt!7, spring ashr!8 and flat ashr!9 as shon in Figur. B. NOTE: If using th foot sitch ithout installing it to th ork tabl lg, mov th foot sitch at last 10 mm aay from th lg. If th foot sitch is not fully in contact ith th ork tabl lg hn th foot sitch is usd, for xampl, if it is just hookd loosly onto th ork tabl lg, it may caus th sing machin to oprat incorrctly. If using th optional to-pdal foot sitch, chang th stting of DIP sitch A on th orration panl hil rfrring to "Stting th prssr mod" on pag 41. 14

3. INSTALLATION 3-17. Installing th motor covr r 1. Install th motor covr to th motor back covr ith th scrs and th flat ashrs r. 2. Pass th motor shaft through th notch in th motor back covr, and thn tightn th scrs y and th ashrs u so that th claranc btn th motor pully t and th motor covr is uniform. t u y 3-18. Installing th spool stand 3-19. Installing th button tray r Assmbl th spool stand hil rfrring to th spool stand instruction manual, and thn install th spool stand at th right sid of th ork tabl. 1. Install th button tray holdr ith th to flat ood scrs at a plac convnint for opration. 2. Insrt th button tray into th button tray holdr, and scur thm iith th scr r. 3-20. Installing th y guard CAUTION Attach all safty dvics bfor using th sing machin. If th machin is usd ithout ths dvics attachd, injury may rsult. Install th y guard assy to th fac plat ith th to scrs. 15

4. LUBRICATION 4. LUBRICATION NOTE 1: NOTE 2: NOTE 3: NOTE 4: CAUTION Turn off th por sitch bfor starting lubricating, othris th machin may oprat if th foot sitch is dprssd by mistak, hich could rsult in injury. B sur to ar protctiv goggls and glovs hn handling th lubricating oil and gras, so that thy do not gt into your ys or onto your skin, othris inflammation can rsult. Furthrmor, do not drink th oil or at th gras undr any circumstancs, as thy can caus vomiting and diarrhoa. Kp th oil out of th rach of childrn. Fill th machin ith oil hn th oil lvl is don to about on-third full in th oil sight glass. If oil is not addd and th oil drops blo this lvl, thr is th dangr that th machin may siz during opration. B sur to lt th machin oprat for a hil aftr adding th oil. If thr is no mor oil on th flt of th shuttl rac bas, problms ith sing may rsult, so add oil to th flt until it is slightly soakd. Us only spcifid Brothr oil (Nisski Sing Lib 10) for th machin oil. 4-1. Lubrication points 1. Fill th arm-sid oil tank ith oil. * Whn stting up th sing machin and hn it hasn t bn usd for an xtndd priod of tim, b sur to add 2-3 drops of oil at th plac indicatd by th arro. 2. Fill th bd-sid oil tamk ith oil 3. Add oil to th flt of th shuttl rac bas. * Whn stting up th sing machin and hn it hasn t bn usd for an xtndd priod of tim, b sur to add 2-3 drops oil to th flt. 4. If using th liuid cooling tank, fill it ith silicon oil (100 mm 2 /s). 16

5. OPERATION 5. OPERATION 5-1. Nam and function of ach opration panl itm B430E Sris POWER RESET u i o P PROGRAM NO. X-SCALE Y-SCALE P1 P3 P2 P4 r TEST!0 SPEED!1!4 COUNTER t BOBBIN.WIND SELECT y POWER indicator... Illuminats hn th por sitch has bn turnd on. RESET sitch.... Prss this sitch to rst th machin hn an rror occurs. TEST sitch... Us this sitch hn you ant to oprat only th fd mchanism in ordr to chck a pattrn. r TEST indicator... Illuminats hn th TEST sitch has bn prssd. t BOBBIN. WIND sitch... Prss this sitch to ind th lor thrad. y SELECT sitch... Us this sitch to slct a mnu (program numbr, X and Y fd, spd and countr). Each tim th sitch is prssd, on of th mnu indicators (u to!1) illuminats, and th stting for that mnu itm appars in th display!4. Th illiminatd indicator changs as follos ach tim th sitch is prssd. PROGRAM NO. indicator u X-SCALE indicator i Y-SCALE indicator o SPEED indicator!0 COUNTER indicator!1 u PROGRAM NO. indicator... Illuminats hn th SELECT sitch y is prssd to shon th program numbr stting. 17

5. OPERATION B430E Sris POWER RESET i o P PROGRAM NO. X-SCALE Y-SCALE P1 P3 P2 P4!3!0 SPEED TEST!1!4 COUNTER BOBBIN.WIND y SELECT!2 i X-SCALE indicator... Illuminats hn th SELECT sitch y is prssd to shon th X-scal stting. o Y-SCALE indicator... Illuminats hn th SELECT sitch y is prssd to shon th Y-scal stting.!0 SPEED indicator... Illuminats hn th SELECT sitch y is prssd to shon th spd stting.!1 COUNTER indicator... Illuminats hn th SELECT sitch y is prssd to sho th bobbin thrad or production countr stting.!2 DISPLAY SET sitchs... Usd to chang th mnu dtails hich ar displayd in th indo!4.!3 Usr program sitchs... Usd to st and slct usr programs.!4 Display indo... This display indo ill indicat th currnt statu for th slctd mnu, rror or mmory sitch. 18

5. OPERATION 5-2. Oprating procdur Prparation Turn on th por sitch. (Th POWER indicator ill illuminat and th pro gram numbr ill flash in th display indo!4.) Program No. X-scal (%) Y-scal (%) Spd (rpm) 1 2 3 Prss th SELECT sitch y until th PROGRAM NO. indicator illuminats. Factory dfault 00 * 100 100 2000 Variabl rang 01-49 20-200 20-200 1,000-2,500 * For chcking th origin points for X and Y fd 5-2-1. Stting th program numbr Dtrmin th appropriat program from th program list hich is givn on pp. 3-5. Prss th DISPLAY SET sitchs!2 until th dsird program numbr is flashing in th display indo. Dprss th foot sitch to th scond stp. * Th display ill stop flashing and illuminats stadily, and th fd mchanism ill mov to th sing start position. P PROGRAM NO. X-SCALE Y-SCALE y 1st stp 2nd stp SPEED COUNTER SELECT!2 This complts th stting of th program numbr. 5-2-2. Stting th X-scal and Y-scal 1 2 3 Prss th SELECT sitch y until th X-scal or Y-scal indicator illuminats. P PROGRAM NO. Prss th DISPLAY SET sitchs!2 until th dsird scal stting is flashing in th display indo. (Th stting is displayd as a prcntag.) Dprss th foot sitch to th scond stp. * Th display ill stop flashing and illuminats stadily, and th fd mchanism ill mov to th sing start position. X-SCALE Y-SCALE y 1st stp 2nd stp SPEED!2 COUNTER SELECT This complts th stting of th X-scal or Y-scal. 5-2-3. Stting th sing spd 1 2 Prss th SELECT sitch y until th SPEED indicator illuminats. Prss th DISPLAY SET sitchs!2 until th dsird spd stting is flashing in th display indo. NOTE: B sur to chck th sing pattrn (rfr to pag 20) aftr stting has bn compltd to mak sur that th ndl drops don into th hol of th button. P PROGRAM NO. X-SCALE Y-SCALE y SPEED COUNTER SELECT!2 19

6. CHECKING THE SEWING PATTERN 6. CHECKING THE SEWING PATTERN Whn chcking by oprating only th fd mchanism 1. Turn on th por sitch. (Th POWER indicator ill illuminat and th program numbr ill flash in th display indo.) 2. St th X-scal and Y-scal in accordanc ith th hol pitch of th buttons bing usd. (Rfr to 5-2-2. Stting th X-scal and Y-scal.) 3. St th button. (Rfr to 7-7. Insrting th button.) 4. Prss th TEST sitch. (Th TEST indicator ill illuminat.) TEST 5. Dprss th foot sitch to th scond stp. Only th fd mchanism ill mov. Th fd mchanism movs forard by on stitch ach tim th foot sitch is dprssd. Each tim th fd mchanism is movd forard by on stitch, turn th machin pully by hand and chck that th ndl gos into th hols in th button ithout touching th button. Do this for ach hol position. (NOTE) Aftr chcking is complt, dprss th foot sitch to mov th fd mchanism to th nd position. ( ) * If you dprss th foot sitch again and kp it dprsss aftr th fd mchanism has startd to mov, th fding spd ill incras. * If you ould lik to stop th fd hil it is moving, prss th TEST sitch. 1st stp 2nd stp 6. Prss th TEST sitch. (Th TEST indicator ill sitch off and th tst mod ill b clard.) TEST 7. Dprss th foot sitch. Th ork clamp ill ris and th prparation for sing ill b compltd. NOTE: If th ndl touchs th button, carry out th folloing. 1.Chck that th ndl siz corrctly matchs th diamtr of th hols in th button. (Rfr to 7-1. Slcting th ndl and thrad.) 2.Mak fin adjustmnts to th X-scal and Y-scal. (Rfr to 5-2-2. Stting th X-scal and Y-scal.) 3.Adjust th position of th button holdr. (Rfr to 10-10. Adjusting th position of th button holdr.) To nsur safty during us... You can prvnt accidntal changs bing mad to programs by stting DIP sitchs 7 and 8 to ON. Whn DIP sitch 7 is ON... Th sing pattrn cannot b nlargd. Whn DIP sitch 8 is ON... Th program numbr cannot b changd. 20

7. CORRECT USE 7. CORRECT USE 7-1. Slcting th ndl and thrad Rfr to th tabl at right for dtails on hich ndl and thrad to slct. NOTE: Us buttons hich hav a hol diamtr that is gratr than th valu givn in th tabl, to nsur that th ndl dos not touch th button. Ndl TQ 1 #11 TQ 1 #12 TQ 1 #14 Thrad #60 #50 Button hol diamtr 1.5mm or gratr 1.6mm or gratr 1.7mm or gratr 7-2. Installing th ndl CAUTION Turn off th por sitch bfor installing th ndl, othris th machin may oprat of th foot sitch is dprssd by mistak and srious injury could rsult. Loosn th st scr, insrt th ndl as far as it ill go so that th groov is facing toard you, and thn tightn th st scr. 7-3. Thrading th uppr thrad CAUTION Turn off th por sitch bfor thrading th thrad, othris th machin may oprat if th foot sitch is dprssd by mistak and srious injury could rsult. Thrad th uppr thrad corrctly as shon in th illustration blo. * If th tnsion rlas lvr is raisd in th dirction of th arro, it ill b asir to opn th tnsion disc and pull th thrad through. [Whn using th liuid cooling tank] Approx. 40mm 21

7. CORRECT USE 7-4. Winding th lor thrad CAUTION Do not touch or plac anything against any of th moving parts hil inding th lor thrad, othris prsonal injury or damag to th machin may rsult. 1. Plac th bobbin all th ay onto th shaft. 2. Thrad th thrad as shon in th illustration at right, ind th thrad around th bobbin svral tims in th dirction of th arro, and thn prss th bobbin prssr. 3. Turn on th por sitch. (Th POWER indicator on th opration panl ill illuminat.) 4. Chck that th button is not insrtd and th ndl dos not touch th button clamp, and thn hil prssing th BOBBIN. WIND sitch, dprss th foot sitch to start th machin. Kp dprssing th foot sitch until th lor thrad stops bing ound onto th bobbin. Rlas th BOBBIN. WIND sitch aftr th machin starts oprating. If you rlas th foot sitch bfor inding is compltd, dprss it onc mor hil prssing and holding th BOBBIN. WIND sitch. BOBBIN.WIND 5. Th bobbin prssr ill automatically rturn to its original position aftr a st amount of thrad (80-90% of th bobbin capacity ) has bn ound on. 6. Rlas th foot sitch. 7. Rmov th bobbin, hook th thrad onto th knif r, and thn pull th bobbin in th dirction of th arro to cut th thrad. r 8. To ind mor thrad onto th bobbin, loosn th st scr t and pull th bobbin prssr outard. t << If th thrad inds onto th bobbin unvnly >> If th thrad inds onto th bobbin unvnly, loosn th nut and turn th bobbin indr thrad tnsion stud to adjust. * If th thrad inds on as shon in A, turn th bobbin indr thrad tnsion stud clockis; if it inds on as shon in B, turn th bobbin indr thrad tnsion stud countrclockis. Cas A Cas B 22

7. CORRECT USE 7-5. Rplacing th bobbin cas and thrading th thrad CAUTION Turn off th por sitch bfor rmoving and rplacing th bobbin cas, othris th machin may oprat if th foot sitch is dprssd by mistak and srious injury could rsult. r 30mm Pull th shuttl rac covr toard you to opn it. 7-6. Thrad tnsion rfrnc guid Insrt a n bobbin into th bobbin cas, and thn pass th thrad through th slot and pull it out from th thrad hol. Chck that th bobbin turns in th dirction of th arro hn th thrad is pulld at this tim. Pass th thrad through th lvr thrad hol r, and thn pull out approximatly 30 mm of thrad. Thrad #60 or uivalnt Thrad tak-up spring tnsion (mm) 0.4-0.6 Uppr thrad tnsion (N) 0.7-1.3 Pr-tnsion (N) 0.1-0.3 Lor thrad tnsion (N) 0.3-0.4 Ndl TQ 1#12 Thrad tak-up spring hight (mm) 6-8 7-6-1. Lor thrad tnsion 7-6-2. Uppr thrad tnsion akr strongr Wakr Strongr Strongr Wakr Adjust th thrad tnsion to th akst possibl tnsion by turning th thrad tnsion nut until th bobbin cas ill not drop by its on ight hil th thrad nd coming out of th bobbin cas is hld. Turn th tnsion nut (main tnsion) to adjust th tnsion as appropriat for th matrial bing sn. Furthrmor, turn th thrad nut (sub-tnsion) to adjust th rmaining lngth of uppr thrad to 35-40 mm hn th thrad tak-up lvr is not usd. 23

7-6-3. Thrad tak-up spring hight 7-6-4. Thrad tak-up spring tnsion 7. CORRECT USE Lor Highr Strongr Wakr Loosn th st scr and turn th tnsionr body to adjust th thrad tak-up spring hight. Turn th tnsion stud ith a scrdrivr. 7-6-5. Adjusting arm thrad guid R Bcom gratr A Bcom lss Th standard position of arm thrad guid R is hn th scr is alignd ith mark A. To adjust th position, loosn th scr and thn mov arm thrad guid R. * Whn sing thick matrial, mov arm thrad guid R to th lft. (Th thrad tak-up amount ill bcom gratr.) * Whn sing thin matrial, mov arm thrad guid R to th right. (Th thrad tak-up amount ill bcom lss.) 7-6-6. Thrad tak-up amount Loosn th scr and mov th stoppr (3.57 nut) to adjust th oprating angl of th thrad tak-up solnoid. * To rduc th thrad tak-up amount, mov th stoppr upard. * To incras th thrad tak-up amount, mov th stoppr donard. Bcom lss Bcom gratr 24

7. CORRECT USE 7-7. Insrting th button 1. Prss th cam plat to opn th button holdr. 2. Insrt th button, making sur that th button is facing th dircting shon in th illustration, thn rlas th cam plat. 7-8. Adjusting th button holdr 0.5-1.0mm 1. Insrt th button in th button holdr. Confirm that th button is scurly hld by th holdr. 2. Loosn th st scr, hil th button is hld by th holdr. Mov th adjusting plat so that th spac btn th adjusting plat and scr is approximatly 0.5-1.0 mm, thn tightn th st scr. 7-9. Adjustmnt by th accssory spring r t If you ould lik th button to b raisd up mor aftr it is sn, install th accssory spring. 1. Install th spring support ith th bolt. 2. Install th spring ith th ashr r and th scr t. 25

8. SEWING 8. SEWING CAUTION Turn off th por sitch at th folloing tims, othris th machin may oprat if th foot sitch is dprssd by mistak, hich could rsult in injury. Thrading Whn rplacing th ndl Whn not using th machin and hn laving th machin unattndd. Do not touch any of th moving parts or prss any objcts against th machin hil sing, as this may rsult in prsonal injury or damag to th machin. Bfor starting sing... Chck that th ndl bar is at its highst position. Turn th machin pully so that th indx mark on th pully is btn th marks on th blt covr. * If th machin pully stop position is incorrct, rror E-50 may b displayd, or th ipr may com into contact ith th ndl and brak th tip of th ndl. 1. Turn on th por sitch. (Th POWER indicator ill illuminat and th program numbr ill flash in th display.) 2. Dprss th foot sitch to th 2nd stp. Th fd mchanism ill mov to th starting position and th button clamp ill ris. * Not that if th foot sitch is prssd to th 2nd stp hil th display is illuminatd, th machin ill start oprating. 1st Stp 2nd Stp 3. Insrt th button to th button holdr. (Rfr to 7-7. Insrting th button.) 4. Plac th matrial to b sn undr th button clamp, and thn dprss th foot sitch. Whn th foot sitch is prssd to th 1st stp, th button clamp ill lor. If you ould lik to shift th position of th matrial, rlas th foot sitch. Th button clamp ill thn ris again. Whn th foot sitch is prssd to th 2nd stp, th machin ill start oprating. * Whn sing programs hich do not us crossvr stitchs (program Nos. 14, 15, 20, 22, 28, 29, 32, 33, 35), prss th foot sitch tic, or kp prssing it until th scond sing opration starts. 5. Onc sing is compltd and th thrad has bn trimmd, th button clamp ill ris. 26

9. MAINTENANCE AND INSPECTION 9. MAINTENANCE AND INSPECTION CAUTION Turn off th por sitch bfor carrying out claning, othris th machin may oprat if th foot sitch is prssd by mistak, hich could rsult in injury. B sur to ar protctiv goggls and glovs hn handling th lubricating oil and gras, so that thy do not gt into your ys or onto your skin, othris inflammation can rsult. Furthrmor, do not drink th oil or at th gras undr any circumstancs, as thy can caus vomiting and diarrhoa. Kp th oil out of th rach of childrn. 9-1. Claning th rotary hook 1. Pull th shuttl rac covr toard you to opn it, and thn rmov th bobbin cas. 2. Opn th stting cla in th dirction indicatd by th arro, and thn rmov th shuttl rac body and th shuttl hook. 3. Clan all th dust and thrad nds from around th drivr r, th top of th rotary hook thrad guid and th shuttl rac. r 27

9-2. Lubrication NOTE1: NOTE2: NOTE3: NOTE4: 9. MAINTENANCE AND INSPECTION Fill th machin ith oil hn th oil lvl is don to about on-third full in th oil sight glass. If oil is not addd and th oil drops blo this lvl, thr is th dangr that th machin may siz during opration. B sur to lt th machin oprat for a hil aftr adding th oil. If thr is no mor oil on th flt of th shuttl rac bas, problms ith sing may rsult, so add oil to th flt until it is slightly soakd. Us only spcifid Brothr oil (Nisski Sing Lib 10) for th machin oil. 1. Fill th arm-sid oil tank ith oil. * Whn stting up th sing machin and hn it hasn't bn usd for an xtndd priod of tim, b sur to add 2-3 drops of oil at th plac indicatd by th arro. 2. Fill th bd-sid oil tamk ith oil. 3. Add oil to th flt of th shuttl rac bas. * Whn stting up th sing machin and hn it hasn t bn usd for an xtndd priod of tim, b sur to add 2-3 drops oil to th flt. 4. If using th liuid cooling tank, fill it ith silicon oil (100 mm 2 /s). 28

9. MAINTENANCE AND INSPECTION 9-3. Draining th oil 1. Rmov and mpty th ast oil containr hnvr it is full. 2. Aftr mptying th ast oil containr, scr it back into its original position. 9-4. Claning th control box air inlt port Us a vacuum clanr to clan th filtr in th air inlt port of th control box at last onc a month. * If th machin is usd hil th air inlt port is blockd, th insid of th control box ill ovrhat. Whn this happns, th ovrhating rror cod ( Ed0 ) ill b displayd and you ill not b abl to oprat th sing machin. 9-5. Claning th y guard Wip th y guard clan ith a soft cloth. NOTE: Do not us solvnts such as krosn or thinnr to clan th y guard. 9-6. Chcking th ndl Alays chck that th tip of th ndl is not brokn and also th ndl is not bnt bfor starting sing. 29

10. STANDARD ADJUSTMENTS 10. STANDARD ADJUSTMENTS Maintnanc and inspction of th sing machin should only b carrid out by a ualifid tchnician. Ask your Brothr dalr or a ualifid lctrician to carry out any maintnanc and inspction of th lctrical systm. Turn off th por sitch and disconnct th por cord from th all outlt at th folloing tims, othris th machin may oprat if th foot sitch is dprssd by mistak, hich could rsult in injury. Whn carring out inspction, adjustmnt and maintnanc Whn rplacing consumabl parts such as th rotary hook and knif 10-1. Adjusting th ndl bar hight CAUTION Hold th machin had ith both hands hn tilting it back or rturning it to its original position. Furthrmor, aftr tilting back th machin had, do not push th fac plat sid or th pully sid from abov, as this could caus th machin had to toppl ovr, hich may rsult in prsonal injury or damag to th machin. If th por sitch nds to b lft on hn carrying out som adjustmnt, b xtrmly carful to obsrv all safty prcautions. If any safty dvics hav bn rmovd, b absolutly sur to r-install thm to thir original positions and chck that thy oprat corrctly bfor using th machin. A TQ 1 Turn th machin pully to mov th ndl bar to th lost position. Thn rmov th rubbr plug, loosn th st scr and thn mov th ndl bar up or don to adjust so that th highst rfrnc lin (rfrnc lin A) is alignd ith th lor dg of th ndl bar bush. 10-2. Adjusting th ndl bar lift amount t r t B TQ 1 t y Adjust th ndl bar lift amount as dscribd blo so that th tip of th rotary hook is alignd ith th cntr of th ndl hn th machin pully is turnd to rais th ndl bar from its lost position until th scond rfrnc lin from th top of th ndl (rfrnc lin B) is alignd ith th lor dg of th ndl bar bush. 1. Opn th support in th dirction of th arro, and rmov th flt support. 2. Loosn th scr r, and mov th drivr to adjust so that th tip of th rotary hook is alignd ith th ndl cntr lin. * Whn rturning th flt support, plac it as shon in th illustration so as not to clamp th flt t, and thn gntly prss th flt t and th ick y until thy ar at th sam hight as th rotary hook rac. * Rturn th support to its original position. 30

10. STANDARD ADJUSTMENTS 10-3. Adjusting th drivr ndl guard Ndl cntr lin Tip Turn th machin pully to align th tip of th rotary hook ith th ndl cntr lin. Thn loosn th st scr and turn th ccntric shaft to adjust so that th drivr ndl guard contacts th ndl. If th ndl contact prssur is too grat, skippd stitchs may occur. On th othr hand, if th drivr ndl guard is not touching th ndl, th tip of th innr rotary hook ill obstruct th ndl, rsulting in an xcssivly high amount of friction. 10-4. Adjusting th ndl claranc 0.01-0.08mm Turn th machin pully to align th tip of th rotary hook ith th ndl cntr lin. Thn loosn th st scr and turn th ccntric shaft to adjust so that th claranc btn th ndl and th rotary hook is 0.01-0.08 mm. 10-5. Adjusting th shuttl rac thrad guid Install th shuttl rac thrad guid by pushing it in th dirction of th arro so that th ndl groov is alignd ith th cntr of th ndl plat hol. NOTE: If th shuttl rac thrad guid is in th rong position, thrad brakags, soild thrad or catching of th thrad may occur. 31

10. STANDARD ADJUSTMENTS 10-6.Adjusting th thrad tak-up amount Thrad tak-up amount (strok) Bcom lss Bcom gratr r At th tim of shipmnt from th factory, th thrad tak-up amount (strok) of th thrad tak-up lvr is st to th standard stting of 5 mm. You may nd to adjust this stting dpnding on th sing conditions to prvnt th thrad from pulling out at th sing start. [Adjustmnt mthod] Loosn th scr and mov th stoppr (3.57 nut) to adjust th oprating angl of th thrad tak-up solnoid r. * To rduc th thrad tak-up amount, mov th stoppr upard. * To incras th thrad tak-up amount, mov th stoppr donard. NOTE: Do not incras th strok of th thrad tak-up lvr any mor than is ncssary. If th sub-thrad tnsion is too high, th ndl thrad lngth may bcom too short and th thrad may com out of th ndl. Furthrmor, if th sub-thrad tnsion is too ak, th ndl thrad lngth may bcom too long and th undrsid of th articl bing sn may bcom untidy. 10-7. Adjusting th movabl knif B A Loosn th nut and mov th conncting rod lvr to th lft or right to adjust so that th V sction A is alignd ith th indx bark B on th ndl plat hn th sing machin in th stoppd position and th movabl knif is movd toard th indx mark. 32

10. STANDARD ADJUSTMENTS 10-7-1. Rplacing th movabl knif and fixd knif y y t r i u 1. Opn th larg shuttl hook covr, rmov th scrs and, and thn rmov th fd plat. 2. Rmov th to scrs r and th to scrs t, and thn rmov th ndl plat y. 3. Rmov th thrad trimmr conncting rod u from th conncting rod lvr pin i.!2 o!1!0!3 0.5mm!0 4. Rmov th movabl knif o and rplac it ith a n on. At this tim, chck that th movabl knif o and th fixd knif!0 cut th thrad clanly. If ncssary, adjust by using th appropriat movabl knif ashr!1 (supplid as accssoris). * Apply gras to th outsid of th collar!2 at this tim. 5. Install th fixd knif!0 at a distanc of 0.5 mm from th ndl hol plat!3. 6. Plac th thrad trimming conncting rod uonto th conncting rod lvr pin i, and thn install to th ndl plat y. 33

10. STANDARD ADJUSTMENTS 10-7-2. Adjusting th ngagmnt of th movabl knif and fixd knif Fig. 1 Movabl knif A B C D Cutting dg Cutting dg Fix knif Cutting dg Cutting dg A. Aftr th movabl knif and fixd knif ar proprly ngagd, tightn th scr as shon in Fig.1. B. Turn th movabl knif (in th dirction of th arro) hil th scr is still tightnd. C. Loosn th scr. D. Turn th movabl knif (in th dirction of th arro) hil th scr is still loosnd. Rpat abov stps A, B, C and D four or fiv tims to maintain th cutting prformanc of th knif. 10-8. Adjusting th button clamp lift amount Th maximum button clamp lift amount is 13 mm from th top of th ndl plat. (Th lift amount is adjustd 10-11 mm at th tim of shipmnt.) 13mm Rmov th button clamp prssr spring, loosn th scr and adjust th button clamp holdr hook by moving it up and don. * If th button clamp lift amount is too larg, th button clamp ill not b raisd. * If th button clamp cannot b raisd or lord, rror cod E-61 or E-63 ill b displayd. 34

10. STANDARD ADJUSTMENTS 10-9. Adjusting th holding prssur Loosn th adjusting nut and turn th adjusting nut to th point hr it is just tight nough that th matrial ill not slip out of plac hn it is slightly pulld (kp prssur as slight as possibl). 10-10. Adjusting th position of th button holdr 1. Loosn th to hxagonal bolts and adjust th button holdr body by moving it. 2. Chck that th ndl ill go through th button hol ith no contact. (Rfr to 6. CHECKING THE SEWING PATTERN.) 35

10. STANDARD ADJUSTMENTS 10-11. Adjusting th ndl up stop position r t y u Th ndl up stop position is adjustd so that th indx mark on th machin pully is insid th mark r on th blt covr. If adjustmnt is ncssary, loosn th scr t at th U mark of th machin pully and adjust th position of th machin pully. Th machin pully stops latr if it is turnd clockis, and it stops arlir if it is turnd countrclockis. NOTE: Th scr y at th D mark is an adjusting scr for th ndl don dtction function and is adjustd to match th fd timing, so it should not b loosnd. Th scr u is a scr for dtcting th machin stop position, and should not b loosnd. * If th indx mark is not insid th mark r hn th sing machin is startd, rror cod E-50 ill b displayd. Turn th machin pully to mov th indx mark to th corrct position and thn start th sing machin. 10-12. Adjusting th thrad ipr r 2±0.5mm t (Approx. 30mm) Approx. 20mm 1. Loosn th st scr and mov th ipr arm support up or don to adjust so that th claranc btn th top of th thrad ipr and th ndl point is 2 ± 0.5 mm hn th thrad ipr is alignd ith th cntr of th ndl. * Bfor carrying out this adjustmnt, chck that th ndl bar is lord 3.5 to 4 mm from th ndl up stop position hn th sing machin stops. 2. Loosn th scr r and mov th thrad guid conncting plat t up or don so that th thrad ipr is approximatly 20 mm from th ndl hn it is at th standby position. 36