Pfaff Creative 7550 Service Manual Download Page 87

Page: 87 / 116

F'rtting:

•

Insert the new feed stepping motor complete with bracket (fi

37b).

•

Insert and lightly tighten upper retaining screw 16.

•

Insert and lightly tighten clamp spring 15a with screw 16.

•

Push slide block 12 with spring onto the

bolt

and set it in the guide slot in the

correct

curve radius

Check that the slide block moves freely, but without play or binding, in the guide slol

•

Push guide lever 15 complete with the stepping motor carefully to the left, until there Is a clearance

of 0.05 mm between the slide block and the connecting bar.

•

Tighten screws 16 and check that the slide block moves freely, but without

play

•

Push link 1 0 complete wi

t h cam lever 9 to the right onto the connecting bar pin.

•

Fold cam lever 9 to the rear and then over feeding eccentric 20

•

Insert screw 18 In fulcrum stud 19 and tighten it a little.

•

Shift fulcrum stud 19 laterally so that link 1 0 and the connecting bar still have a slight play and

can move freely.

•

Tighten screw 18.

Connect spring 14.

•

Insert cable guide 180 and secure it with screw 181 {hg.

7a)

•

Install transverse-drive stepping motor according to section 38.

•

Push synchronizer 34 onto the shaft making sure that the housing rib is between the two guide

amp

•

Place five-wire flat cable 127 in cable guide 119.

•

Place seven-wire ftat cable 200 in the cable guide.

•

Insert the complete buttonhole sensor.

•

Secure the free-arm cover with two screws.

•

Place the five-wire and the four-wire flat cables in the cable guides.

• Set

the complete baseplate against the machine.

Summary of Contents for Creative 7550

Page 1: ...PFAFF creative 7550 Service Manual ...

Page 2: ...Changing the pressure spring In the handwheel release 24 Dismantling and assembling the sewing hook 25 Cleaning and oiling the machine 26 Changing the toothed belt 27 Changing the bevel gears 28 Changing the base circuit board 29 Changing the thread monitor with free arm cover 30 Changing the control panel 31 Changing the synchronizer 32 Changing the motor 33 Changing the motor circuit board 34 Ch...

Page 3: ...set forth in Para 3 of the Regulations for Repair Modifi cation and Testing of Used Electrical Devices VDE 0701 edition 9 71 After every repair of electrical devices we manufacture a test In accordance with VDE 0701 is obligatory OutsideGermany there are similar regulations In force which are largely Identical with the require ments of VDE 0701 For repairs of electrical devices it Is therefore by ...

Page 4: ... soft cloth with a neutral cleansing agent for plastic materials Please note Do not use any Insecticides or chemical products such as petrol gas or thin chemicals for cleaning the housing Display H necessary clean display with a soft cloth moistened with a little water Safety 1 The machine must be put into operation according to the indications on the specification plate 2 Do not place any objects...

Page 5: ...left with 30 full steps each e One full step has 0 033 mm One 7 5 stepping motor fo r transverse feed motion contact current controller 3 track synchronizer Electronically controlled take up lever up needle up positioning or needle down position with LED display Key with LED indicator for half speed 540 r p m Key with LED indicator for tying off stitch patterns or for determining buttonhole length...

Page 6: ...ons 386 153 mm a Free arm dimensions 76 49 196 mm Hous ing material aluminium alloy Weight of sewing head 8 640 Kg Needle system 130 705 Additional needle system classifications Twin needle Wing needle Twin hem stitching needle Long needle eye Stretch needle Jeans needle Possible needle points Small ball point Medium ball point Large ball point Pointed cloth point Leather point right hand Suffix Z...

Page 7: ...Notes 6 ...

Page 8: ...s rotating direction but it must be possible to turn the machine easily Adjustment Loosen screw 1 fig 1 Re position tensioning roller 2 wl1h a screwdriver accordingly Tighten screw 1 Check Check adjustment according to the Requirement Press lightly against middle of toothed belt 250 g The belt must move 1 to 3 mm inwards tig 1 Fig t 7 ...

Page 9: ...ght cylindrical pin must be 1 kg Tighten screw 7 Fit pin 5c without any play and tighten screw Sa Disconnect spring 8 Remove the needle plate Use your finger to pull the feed dog to the front then release il The complete feed driving shaft S must slide slowlY to the rear Loosen screw 172 fig 2c Move the top feed lever assembly to the front and rear The complete top feed lever assembly must move ea...

Page 10: ...ping motorand fit the motor e Tighten the three Philips screws 201 a little fig 2a e Insert five wire llat cable 126 complete with sensor C Place seven wire flat cable 200 in the cable duel e Fit the needle plate Note Adjust transverse drive stepping motor according to section 4 0 Fig 2 8 I I I 201 Fig 2a Fig 2c 201 Fig 2b I I I 172 171 7 b I I 5c 9 ...

Page 11: ...e e Push the needle rise clamp 00 870 137 01 on the needle bar and tighten it lightly e Push the 2 mm feeler gauge 00 870 136 01 with its cutout on the needle bar above the neeclle rise clamp e Loosen the needle rise clamp and push the 2 mm feeler gauge up against the spacer Tighten the milled screw of the needle rise clamp fig 3a Turn the handwheel to and fro a little If there is play at the feel...

Page 12: ...tO f3 I I I 20 I 9 16 l Fig 3b 1 0 ts ts t9 11 ...

Page 13: ...t leave all electrical connections in place Switch on master switch Set 6 mm stitch length in stitch program oo Turn handwheel by a complete turn Loosen the three Philips screws 201 fig 4a and turn the transverse drive stepping motor until the feed dog is centered in the feed slots fig 4 Lightly tighten the three Philips screws 201 fig 4a Crou check Press the staggered stitch key Press key 3 for m...

Page 14: ...Fig 4 Fig 4a 13 ...

Page 15: ...eeler lever 27 on the feed dog fig 4b e Turn the handwheel until pointer 26 has moved up to its highest position The pointer must now point exactly at mark 0 9 Adjuatrnent Leave the pointer gauge on the needle plate e Remove baseplate and bobbin thread monitor but leave all electrical connections in place e Turn the handwheel until the feed dog Is In its highest working position Loosen screw 24 by...

Page 16: ...w 27 I I re r r I r Uio I T I w 27 I I r l t J l _ I lliio l J _J r I Flg 4c lW Rg 4 I c 1 1 r J Flg 4a c l l J c r 4b Rg o 26 25 I 0 I I I I I I I I I _____ 15 ...

Page 17: ...ve the needle Remove the sewing foot Switch on the master switch Set stitch pattern oo and stitch length 0 5 Set pointer gauge 63 114690 23 on the needle plate so that feeler lever 27 rests on the needle plate just right of the feed slots fig Sa Turn the hexagon with a 6 mm spanner wrench until pointer 26 is exactly at o Turn the handwheel a full rotation forwards then keep on turning it until the...

Page 18: ...side of the mach1ne fig Se Set the stitch length at oo Keep on turning short plastic shaft 32 very slowly until the stepping motor switches Tighten fixing collar screw 33 and remove the spanner wrench Check Set the stitch length at 0 5 T1urn the handwheel a full rotation forwards then keep on turning until the feed dog needle bar is In its top position Set the stitch length at oo Turn the handwhee...

Page 19: ...ot gauge However the sewing foot gauge must not lift the zigzag foot and the needle thread tension release must be without play fig 6 a Adjustment Loosen the three screws 183 184 and 188 Turn the zlgzag foot with the presser bar litter raised until it is parallel with the sides of the sewing foot gauge Use a screwdriver to press presser bar guide 185 firmly downward At the same time firmly tighten...

Page 20: ...og is flush with the needle plate surface e Lower the presser bar litter Carry out a visual check fig 7 Adjustment e Loosen screw 176 fig 7a e Raise the presser bar litter until the top feed foot is just resting on top of the feed dog e At the same time push the top feed dog to the front or to the rear until its front edge is between the first and second tooth point of the center tooth row e Lower...

Page 21: ...ormal raised position Raise top feed foot 189 by about 2 mm against its spring pressure and then relea il Press the top feed foot lightly downwards Check that the top feed foot rests only lightly on the sewing foot gauge and has no play Adjuatment Loosen screws 183 and 188 Push counter bearing 182 lightly downward until top feed foot 189 rests lightly on the sewing foot gauge Tighten screw 183 in ...

Page 22: ...182 183 189 _________ Fig Sa Fig 8 21 ...

Page 23: ... Select stitch pattern oo for straight stitch e Turn the handwheel until the needle is in the needle hole e Make a visual check Select adjusting program 248 and a zigzag width of 9 mm Turn the handwheel and check the left amd right distance Adjustment Select stitch pattern oo for straight stitch e Loosen screws 39 just a little fig 9b e Push the complete stepping motor 38 to the left or to the rig...

Page 24: ...I fig 9 er t I 1 t 38 39 Fig 9b ir 1 m Fig 9a 39 23 ...

Page 25: ...on which the scarf is located Needle bar height The needle bar heigth must be set in such a way that the sewing hook point can easily enter the thread loop above the needle eye at straight stitch and zigzag stitch settings Hook to needle clearance The distance or the sewing hook point from the needle must be as small as possible so that the sewing hook point does no miss the thread loop The sequen...

Page 26: ...positioned exactly in the middle of the needle hole as seen in feeding direction while the point of an Nm 80 needle is positioned slightly closer to the back edge of the hole Check Insert a new needle of sysem 130 705 H In size Nm 100 Select st i tch pattern oo for straight stitch Engage the zigzag foot Lower the zlgzag toot Turn the handWheel until the needle Is In its lowest position The needle ...

Page 27: ... a spring hook and let it hartg on the latter fig 1Oa e Disconnect connecting rod 34 at pin 36 by lifting it up e Move the needle bar frame and the connecting rod to the left and right Important The needle bar frame must move easily and without binding If this Is not the case any binding must be removed e Re insert pin 36 of connecting rod 34 Mount sprirtg 35 on connecting rod 34 AdJintlng the nee...

Page 28: ...Fig 10b I L I r __ _r 44 t _NM 100 11 t c l Flg 10c l 27 ...

Page 29: ...k sha1t has axial play loosen the two screws 49 fig 11a Press bevel gear 46 with the shaft to the front and push sewing hook 50 to the rear Tighten the two screws 49 Loosen screw 45 In the lifting eccentric by 2 to 3 turns Loosen screw 47 just a little e Turn handwheel and sewing hook until the hook point is opposite the middle of the needle scarf hilt the sewing hook complete with hook shalt bush...

Page 30: ...I I 50 6 I I OOSmm I 0 CID Fig 11 45 I I I I G Fig 11e 29 ...

Page 31: ... needle rise clamp Turn the handwheel backwards and forwards a little e If there is any playon the feeler gauge repeat this procedure Remove the 2 3 mm feeler gauge e Turn the handwheel in sewing direction until the needle rise clam fig 12a By this meansthe needle hasmoved upwards to the needle risr The hook point must nowbe exactly behind the center line ofthe ne Ad justment e If the setting is n...

Page 32: ...I I 46 Ag 12 Fig 12 e Ag 12b 31 ...

Page 33: ...g 13a Check e Select adjusting program 248 and a zigzag width of 9 mm e Turn the handwheel until the needle risesat the left zigzag stitch and the sewing hook point Is exactly behind the needle center line of the needle The distance between the top edge of the needle eye and the bottom edge of the hook point must be 0 5 mm Adjustment Loosen screw 192 just a little fig 13b Shift needle bar 190 in h...

Page 34: ...ssible to insert the clearance gauge 00 880133 01 w ith ease but without play between the position finger and the l ottom of the groove in the bobbin case base f ig 14 Adjustment Loosen the two screws 54 Insert the clearance gauge Press position finger bracket 53 against the clearance gauge at an angle of 90 degrees Tighten the two screws 54 Cross check Same as Check 53 54 0 7mm Fig 14 33 ...

Page 35: ...eedle fig 15 T tghten screw 194 in this position Cross check 1 Use key 191 to move the threader prong to the rear and to the front again Carry out a visual check ofthe prong height Leterel adjustment e Use key 191 to tum the threader prong to the front into the needle eye e Loosen screw 192 by just 1 8 of a turn fig 15a e Move the prong bracket 193a laterally until prong 194a Is precisely centred ...

Page 36: ...ched a level of 1 mm below the bobbin rim Check Wind a bobbin and checkthat thew inder stops as desired Adjustment Loosen screw 55 fig 16 Position stop 56 to the left for less thread and to r ightfor more thread Tighten screw 55 Cross check Wind a bobbin and check that the winder stops as reQuired I l ID r f Fig 18 f 55 se 35 ...

Page 37: ...s pulled off Check Carry out as described under Check Note e Once the bobbin thread tension has been setcorrectly tension adjustments must be made only at the needle thread tension 18 Adjustment of needle thread tension Requirement Fig 17 Within the adjusting range from 3 to 5 the interlacing of the needle thread and the bottom thread cot ton thread 50 2 or synthetic fibre thread 100 3 must take p...

Page 38: ...o and stitch length 2 0 Sew wtth ztgzag strtch At the same lime turn the milled nut gradually in clockwise direction until the knot is formed in the center of the fabric fig 18 Crou c heck Sew with straight stitch and zigzag s t itch as described under Check Flg 18 Fig 18a Fig 18b Fig 18c Fig led 37 ...

Page 39: ... edge of the needle eye enters the fabric Check Select sti t ch pattern oo for straight stitch e Set the stitch length at 6 0 Place two plies o f linen fabric under the sewing fool e Sew a few stitches Turn the handwheel and determine the end of the thread check spring stroke Correct slackening of the needle threadtakes place when it enters the needle eye not tautly but in a loose curve Ad justmen...

Page 40: ...58 se 1 I eo A 1e 39 ...

Page 41: ...just2 t o 4 degrees in direction A If a rhombus was sewn according to fig 20b turn the adjusting eccentric just 2 to 4 degrees in direction e Cross check Sew the darning program and check Select adjusting program 8 D G H and sew fig 20c Check for length of 34 5 1 0 5 mm Precise ad justment e If the letters are distorted and longer than 35 mm turn the adjusting eccentric with a screwdriver only one...

Page 42: ...ftr I I lJI r Y Y f f f 34 5 0 5 11 Fig 20 Fig 20a Fig 20b Fig 20c Fig 20d 41 ...

Page 43: ...The following is a sewing sample made on the PFAFF Stitch pattern No Stitch width S1itch length or pattern length 1 Straigth stitch 00 2 5 2 Zigzag stitch 10 6 0 2 0 3 Darning stitch 09 6 0 1 5 4 Honeycomb stitch 24 6 0 2 0 5 Ungerie buttonhole 40 4 5 22 6 Eyelet buttonhole 46 6 0 0 35 7 Fancy stitch 71 9 0 0 35 1 2 3 5 r l 6 c Sewing loot no Zigzag foot OA Z igzag loot OA Fancy stitch foot 2A Zig...

Page 44: ...n discs 94 95 and 96 Fitting e Insert tension stud 97 with the threetension discs and the pressure piece e Cementtension stud 97 into the mounting platewith Omnivit Rapid e Push pressure spring 91 and adjusting screw 92 onto tension stud 97 e Insert guide 93 with its rightside and fully screw in screw 9 2 at the left Push on tension dial 88 and make sure the guide pin engages with the worm e Inser...

Page 45: ...irst place clutch piece 113 over the boss of the handwheel then press it towards the back The pressure spring is thus placed vert ical and clutch piece is positioned as shown In fig 23c e Push the pin of pawl 1 1 1 fig 23d Into the hole in such a way that it Is positioned as shown in ftg 23d Push handwheel release disc 110 with its square mark 118 fac ing up into the handwheel ftg 23e e Handwheel ...

Page 46: ...Flg 23a Fig 23b Flg 23e s 117 113 116 Flg 23d Flg 23e 115 114 113 111 110 Fig 23 111 45 ...

Page 47: ...lete with sewing hook gib into the sewing hook 24e e Fasten the sewing hook gib from behind with three screws with springs fig 24 Screw on and adjust the bobbin case position linger 25 Cleaningand oiling the machine Note The machine is equipped with sintered bearings and parts and is therefore maintenance free for the user Only the sewing hook should be lubricated once in a while with normal sewin...

Page 48: ...Ag 24a Rg 24b flo 24 Fig 24d Rg 24a 47 ...

Page 49: ...remove the motor plug upward Place the complete baseplate aside e Open both cable clips 119 at catch 120 and remove the cables from clips 119 Loosen fixing collar screw 33 of the synchronizer fig 26b Remove the synchronizerto the right fromthe shaft Removethe free arm cover Remove the complete buttonhole sensor Loosen screw 130 in arm shaftcrank 131 fig 26a Loosen screw 1 of tensloning roll 137 Un...

Page 50: ...131 132 I I 138 134 Ag 26a Fig 26b 49 ...

Page 51: ... is between guide clamps Place five wire cable 127 in cable clip 1 19 Place seven wire cable 200 in the cable guide fig 26d Place the complete baseplate against the machine Now the flat cables are connected to the baseplate as follows fig 26e Insert motor plug 116 in motorsocket 1 1 8 both catclhes 117 must engage Thetwo connection plug 123 to the two pin base The plug of ftve wire cable 127 to th...

Page 52: ...I I 121 34 117 117 _ 118 Fi g 26e 51 ...

Page 53: ...ust now be exactly opposite th e oenter line of the needle fig 26g If this Is not the case turn simultaneously handwheel and arm shaft crank 131 until the sewing hook Is exactly opposite the center line of the needle with the clamp resting against the spacer Remove the needle rise clamp Tightern screw 130 In arm shaft crank 131 In such a way that the latter has no play and the needle rise Is corre...

Page 54: ...130 Fig 261 Fig 26i 131 Fig 26g Fig 261 I 126 I 124 Ag 26h 53 ...

Page 55: ...gether and pull the plug oft upwards Place the complete baseplate aside Open both cable clips 119 at catch 120 and remove the flat cables from the clips Loosen fixing collar screw 33 of the synchronizer fig 27a Remove the synchronizer t o the right from the shaft e Remove the free arm cover Remove the complete buttonhole sensor e Disconnect pull spring 14 e Unscrew screw 18 Turn the handwheel unti...

Page 56: ...h a screwdriver Push the plastic washer a little t o the left Loosen screw 45 of the lifting eccentric by approx 3 turns fig 27b loosen the 3 screws 35 of the lower toothed belt sprocket fi g 27a Push the hook driving shaft fully to the right Remove l i f t ing eccentric 62 from the hook drMng shaft fig 27b Remove the needle plate to the top Loosen screw Sa fig 27c Pull out pin Se to the right loo...

Page 57: ... dog point screw 19a in feed eccentric 20 and In the hook driving shaft Note Dog point screw 19a mustalways protrude from feed eccentr ic 20 on the opposite side of screw 45 In lifting eccentric 62 e Fit the feed dog lowering mechanism e Fit slide block 12 with the spring on the pin and insert into the slide way in the correct curve radius Check thattheslide block can be moved easily without play ...

Page 58: ...61 50 49 I l I I I 62 63 64 I I 5 Fig 27c 200 Fig 27d I I I 6 I I I 7 Sb Se I I 57 ...

Page 59: ...ate against the machine and fasten it with the four screws Connect the mains lead to the machine socket and the mains Now the following adjustments must be carried out Section 3 Timing of feed motion Section 4 Adjustment of feed dog in sideways direction Section 4a Adjustment of feed dog height Section 5 Adjustment of synchronizer Section 11 Adjustmentof hook to needle clearance Section 12 Hook ti...

Page 60: ...61 1 I I I 62 45 I I 5 Fig 27c 200 Fig 27d I 6 I I I 7 Sb Se I I 59 ...

Page 61: ...tor socket 118 both catches 117 must engage Now the flat cables are connected to the new circuit board as follows Two connection plug 124 to the two pin base The plug of frve wire flat cable 127 to the black pin base The plug of seven wire flat cable 200 to the pink pin base The plug of seven wire flat cable 128 tothe blue pin base The plug of seven wire flat cable 125 to the black pin base The pl...

Page 62: ...I 34 61 ...

Page 63: ...e cable guides 119 e Unscrew both screws 153 of the free arm cover fig 29b Remove the free arm cover Fitting Securethe new free arm cover 154 with both screws 153 e Place four wire flat cable 123 in the cable guides Install all cables according to fig 29 and fitthe cable clips 120 Insert plug of four wire flat cable 123 in the black p i n base fig 29a Fold the baseplate against the machine and sec...

Page 64: ...I 121 154 Flg 2h 153 Fig 29b 63 ...

Page 65: ... fig 30 Remove the right cap of the housing Unscrew the five screws 40 fig 30 and 30b Loosen screw 128 Turn the machine upside down Unscrew the four screws of the baseplate e Turnthe baseplate around Disconnect plugs 122 of the eight flat wires from the circuit board fig 30c e Press the twocatches 1 1 7 of motor plug 116 together and pull the motor plug off upwards Place the complelebaseplate asid...

Page 66: ...40 I Fig 30b Fig 30 Fig 30e 117 Flg 30c 65 ...

Page 67: ...n base The plug of seven wire flat cable 128to the blue pin base The plug of seven wire flat cable 125to the black pin base The plug of twelve wire flat cable 121 to the black pin base The plug of five wire flat cable 126 to the blue pin base The plug of four wire flat cable 123 t o the black pin base Fold the baseplate against the machine and fasten it with the four screws Turn the machine in wor...

Page 68: ... Q I I 121 If d 120 119 Fig 30a Fig 30c 67 ...

Page 69: ...able guide fig 31a Loosen fixing collar screw 33 of synchronizer 34 Remove the synchronizer to the right from the shaft Frtting Push new synchronizer 3 4 onto the shaft When doing so make sure that the housing rib is between both guide clamps Place the five wire flat cable 127 in the cable guides Connect the plug to the c ircuit board fig 31 Adjust synchronizer according to section 5 Fold the base...

Page 70: ...127 Fig 31 127 Fig 31a 120 119 69 ...

Page 71: ...ting Before refitting the motor the leakage current must be measured see section 49 of the repair instructions Insert th e motor and place motor sprocket in toothed belt 141 fig 32 P1ace the two connection plug down Install sewing lampwire 147 at the motor and attach plug 146 Insert and slightly tighten upper motor retaining screw 140 Insert motor cover 143 Insert and slightly tighten the r ight h...

Page 72: ...148 147 148 140 I 141 121 144 Flg 32 71 ...

Page 73: ...les 159 Raise the plastic guide of contact pins 161 by about 3 mm Uft circuit board 160 at the side of the master switch and remove il Rtting First insert new circuit board 160 withcontact pins 161 then install it atthe side ofthe master switch Solderthe four cables at points 159 Push on end shield 158 and fasten it with both groove nuts 157 Push cover 156 onto the one sideand allow it to engage o...

Page 74: ...d the motor bearing fig 34 Turn the screwdrivers thus prizing pinion 142 off its shaft Note The old pinion is no longer usable F itting Support the rotor shaft atthe opposite end and push on the new motor pinion Before installing the motor measure the stray current according to section 49 Install the motor according to section 32 Use testing appliance ABB Metrawatt M 5013 to perform an electrical ...

Page 75: ...e Push the soldered contact eyelet 177 onto the right guide pin Place both cables in the respective guide grooves e Place contact spring 179 on the guide pin In the larger right section of pedal 169 e Push pressure spring 178 onto the same guide pin e Turn pedal 169 around and push the right spring 178 on the r ight guide pin of the housing and the left spring 171 on the left guide pin In pedal 16...

Page 76: ...Q 65 Q 167 I I Fig Fig 35 166 170 171 0 0 178 75 ...

Page 77: ...ning pin fig 36 Remove the retaining pin e Remove the handleto the left e Unscrew the Torx screw and remove the angle fig 36a Remove the right cap from the housing Unscrew the five screws 40 fig 36 Loosen screw 128 e Turn the machine upside down Unscrew the four screws of the baseplate Turn the baseplate around e Disconnect plugs 122 of the eight flat cables from the circuit be J6b e Press the two...

Page 78: ...Flg 38a Fig 36e Fig 36 117 118 Fig 36b 77 ...

Page 79: ...43 at the right harnd side and remove it Disconnect light plug 146 Unscrew the second motor retaining screw 140 lift motor sprocket 142 out of toothed bell 141 and remove the motor tothe front Turn the machine In Its normal posit ion Turn out both screws 39 fig 36e Remove complete stepping motor 78 ...

Page 80: ...I I e r r I I I I 34 Flg 35e 148 I I I I I I I I I I 1 1 I 38 39 I I I I I I 39 144 Flg 35d 79 ...

Page 81: ...Turn the machine upside down Insert the motor and place motor sprocket 142 in toothed belt 141 fig 361 e Insert the two connection plug downward Mount sewing lamp cable 147 atthe motor and attach plug 146 Insert the upper motor retaining screw 140 and tighten itjust a little Insertmotor cover 143 Insert and slightly tighten right hand motor retaining screw 144 Tauten toothed belt 141 and t ighten ...

Page 82: ...141 147 146 140 144 Fig 36f 81 ...

Page 83: ...en wire flat cable 125 to the black pin base e The plug of twelve wire flat cable 121 to the black pin base The plug of five wire flat cable 126 to the blue pin base The plug of four wire flat cable 123 to the black pin base Fold the baseplate against the machine and fasten it with the four screws Turn the machine in working position Insert the five screws 40 and tighten them fig 36 e Tighten scre...

Page 84: ...Fig 38a Fig 36c Fig 38 117 118 Fig 38b 83 ...

Page 85: ...119 at catch 120 and remove the cables form the cable clips Loosen fixing collar screw 33 of the synchronizer Remove th e synchronizer to the right from the shaft Remove the free arm cover Remove the complete buttonhole sensor Remove the transverse dr ive stepping motor according to section 38 Unscrew screw 181 of cable guide 180 fig 37a Remove the cable guide 180 to the front Disconnect pull spri...

Page 86: ...181 10 13 I 14 I I I 20 16 1 i I I I I I 19 Fig 37b I 18 119 Fig 37a I I I I I I 23 85 ...

Page 87: ...lever 9 to the right onto the connecting bar pin Fold cam lever 9 to the rear and then over feeding eccentric 20 Insert screw 18 In fulcrum stud 19 and tighten ita little Shift fulcrum stud 19 laterally s o that link 10 and the connecting bar still have a slight play and can move freely Tighten screw 18 e Connect spring 14 Insert cable guide 180 and secure it with screw 181 hg 37a Install transver...

Page 88: ...10 16 14 I I I I 20 I I I Fig 37b 119 Fig 37a 15a 15 I 18 87 ...

Page 89: ... black pin base The plug of f i v e wire flat cable 126 to the bl p i n base The plug of four wire flat cable 123 to the black pin base Fold the baseplate against the machine and fasten it with the four screws Connect the mains lead to the mains socket on the machine and to the mains Now the following adjustments must be carried out Timing of feed motion section 3 Adjustment of feed dog In sideway...

Page 90: ...I I 121 117 I I 1 I 125 I 128 123 1124 126 127 200 118 117 118 Fig 378 89 ...

Page 91: ...ress the two catches 1 1 7 of motor plug 116 together and remove the motor plug upwards Place the complete baseplate aside Open the two cableclips 119 at catch 120 and remov e the cables form cable clips 1 19 Unscrew both screws 153 of bobbin thread monitor 154 fig 38a e Remove the bobbin thread monitor e Remove the complete buttonhole sensor Remove seven wire flat cable200 of the transverse drive...

Page 92: ...154 Fig 38a I 1811 Fig 38c Fig 38 Fig 38b 91 ...

Page 93: ...able guides Set the complete baseplate againstthe machine Now the flat cables are connected t o the machine as follows fig 38 Motor plug 116 to motorsocket 118 both catches 117 must engage Two connection plug 124 to the two pin base The plug of frve wlre flat cable 127 to the black pin base The plug of seven wire flatcable 200 to the pink pin base The plug of seven wire flatcable 1 to the blue pin...

Page 94: ...154 Fig 3lla I I I I 1111 Fig 311 A IQI Flg 311c ...

Page 95: ...e Turn the baseplate around Disconnect the plugs of the eight flat cables from the circuit board fig 39 e Press both catches 117 of motor plug 116 together and pull the plug out upwards Place the complete baseplate aside Open both cable clips 119 at catch 120 and removethe cables from cable clips 119 Unscrew both screws 153 of bobbin thread monitor 154 fig 39a e Remove the bobbin thread monitor Ta...

Page 96: ...154 Fig 31111 I 125 I 128 I I I 126 127 123 1124 200 Flg 39 95 ...

Page 97: ...lug 124 to the two pin base The plug of five wire flat cable 127 to the black pin base The plug of seven wire flat cable 200 t o the pink pin base The plug of seven wire flat cable 128 to the blue pin base The plug of seven wire flat cable 125 to the black pin base The plug of twelve w ire flat cable 121 t o the black pin base The plug of five wire flat cable 126 t o the blue pin base The plug or ...

Page 98: ...154 Fig 3ia I 188 11 1 1 I 1h 124 I 1 1 125I 128 200 121 I I 128 127 Fig 39c 117 118 Fig 38 97 ...

Page 99: ...t Cycle track Press key sew slow and master switch then pren key needle down Date Press key sew slow and master switch then pren key clear Buttonhole Pren key sew slow and master switch then pren key tie off Adjustment pattern press key menu and masterswitch then escape Input code Press key Into and master switch Select language Press key 1 and master switch 98 ...

Page 100: ...lay switches display tauschen over to matrix display Red LED Is Readings in LEDs go out Matrix display flashing a few brackets are Is inverted limes not displayed 5 Key test All the 31 keys Within 12 s foreach key Key test In case of key must be pressed every key must be pressed Every key specified error repeat once by its name test or All keys pressed Keysoff OK exchange 6 Foot control test 6 Foo...

Page 101: ...nchronizer test Tum handwheel by Synchronlslzer test 2 tums You have 12 s Tum handWheel by 1 tum You have 12 s OK 10 Cycle track test Cycle track test OK 11 Drive motor test Press foot control Motortest Readings in sewing machine brackets are runs stands still not displayed Release foot control OK Needle stops down Sewing machine Readings in press foot control runs at low speed brackets are not di...

Page 102: ...ntrol Sewing machine runs at low speed stands still Insert empty lower bottom same Close free arm lid display Pressroot control Sewing machine runs at low speed stands still Release foot control OK 13 End oftest End of test OK Alter 5 s machine switches over to patttem 00 needle in center position 101 ...

Page 103: ...tonhole In case of sensor test readings between Display of cycles 127 and 254 counted the buttonhole gauge was not inserted 126 correctly 4 Count cycles Remove buttonhole Buttonhole In case of gauge sensor test readings between Display of cycles 0 and 125 conted the buttonhole gaugewas not inserted 126 correctly 5 Counted cycles Buttonhole readings sensor test Clear key 0 Clear may by pressed more...

Page 104: ...rd motor error transverse drive stepping motor Feed stepping Feed stepping motor Control board motor error Synchronlzer error Synchronlzer Control board Thread monitor error Thread monitor with Control board free arm lid Sewing motor error Motor Control board 7 Key error Programming panel Foot control error Foot control Control board Buttonhole sensor Forked buttonhole Control board error photoc l...

Page 105: ... ofPfaffCreative 7550 CD 104 ln rtm iM lead aw JchontiObnln wln Hf tnserl fullOObbin CIOWtreo arMc OYe 50tnM Slebl lratLoP connecttootconttOf W tdl on S Ot sw tch NI indtcUoflightson 1hePf QOI t mtntng PM oft Switctl ott e Pit ttn T HI m acblne ...

Page 106: ...c tay Pr ogt a m diaDtliVOk bUt ftJncboo etfOf S wectcY re lo 5t t t Y et _ _ E _ n d __ _l 1 _ Abb 1 carryouttestacc dlng tothe specified sequence HerrO occours MarCh corresponding errO number In the replacement chartand eliminate errors bysystematicexchangeIn specified sequence Repeat1ell right to the end ol test H ry eliminate furthererrO Suabow and repeat tell untilaU errO Sare eliminated 105 ...

Page 107: ...tf Creative 7550 CD 1 v t cc no t llfrt bUlb 106 a 3 C ch tooccont1ot 4 1 rcnti Qf COfW M I OI G __ _ End__ Replacement sequence K po Siblo check subassembly to be replaoedwithout fitting 11 e g head control panel Ot programming panel nonctatacM _ ...

Page 108: ...ircuit board zlgzag stepping motor circuit board display do not light up motor or flutter motor LEO display on programming panel c ircuit board programming panel does not light up Zlgzag stepping motor circuit board zigzag stepping runs contlnously or needle motor bar moves continously to and fro Feed steppingmotor circuit board feed stepping runs continuously or the feed motor dog moves continuou...

Page 109: ...tch lenghts forward reverse Zigzag needle movement needle bar frame Zlgzag stepping motor Circuit board out of step pattern shifted jams or Is loose sidewaysor needle hits plate Take up lever top position Adjustsynchronizer Exchange synchronlzer Control board and neddle down position Speed control Foot control Circuit board Synchronizer faster or slower Half 1 111 speed at key Circuit board Progra...

Page 110: ...er Into 5 pln DIN socket at sewing machi11e left side of machine baseplate and plug cableof defec1ive CreallveDesigner into test module socket Switch on machine 2 Select empty P pattem press num key Move coordinates slide slowly ta t othe left bottom corner coordinates 0 0 3 Display countsuntil Move coordinates slide slowly D to the top edge 0 4 Display shows Press mem F Oi splay does not show t54...

Page 111: ... shows Presskey I once Move coordinates slide slowly Display does not show G to the top left corner the final value Creative designer defective 8 Display shows and top left Press memory key Display doesnot show G thefinal value Creative designer defective Note When the test Is finished erese the P memory used ...

Page 112: ... measuring range with your finger thus checking the ground lead of the mains Signal lamp PE just above the contact field will lightup only In case the ground lead Is out of order Insert plug of sewing machine Into the mains socket of ABB Metrawatt M 5013 e Run the machine e Meterreading 230 V 10 e Measuring appliance M 5013 can only be used with mains voltages from 207 V to 253 V 230 V 10 11 Appli...

Page 113: ...Fig 48b Fig 48c 112 ...

Page 114: ...I 2281 vce0 01 Q_ CJ0 Flg 48 vce0 01 Flg 48a 113 ...

Page 115: ...50 Measures required in case of inadmias ible test values A s t o I If one of the 4 test functions is a failure the ground mains socket is defective Inform the landlord As to 11 11 thecurrent consumption deviates considerably from the indicated va lue although the machine does not bind the motor is defective and must be exchanged or repaired As to Ill Ifthe insulation resistance drops below the re...

Page 116: ...Fig 41 115 ...

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Summary of Contents for Creative 7550

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Pfaff Creative 7550, Service Manual, Page: 87 / 116

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Summary of Contents for Creative 7550

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