Brother DH4-B981 Instruction Manual Download

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DH4-B981

Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.

ELECTRONIC EYELET BUTTON HOLER

INSTRUCTION MANUAL

Summary of Contents for DH4-B981

Page 1: ...DH4 B981 Please read this manual before using the machine Please keep this manual within easy reach for quick reference ELECTRONIC EYELET BUTTON HOLER INSTRUCTION MANUAL ...

Page 2: ...sure safe operation of this machine and to prevent accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications The instructions which follow this term indicate situations where failure to follow the instruc tions could cause injury when using the machine or physical damage to equipment and sur roundings Symbols This symbol indicates so...

Page 3: ...th correct operation In the event of an electrical storm turn off the power and disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Use the sewing machine in an area which is free from sources of strong electrical noise such as high frequency welders Sources of strong electrical noise may cause prob lems with correct operation Any fluctuations in the ...

Page 4: ...to wear protective goggles when using the machine If goggles are not worn there is the danger that if a needle breaks parts of the broken needle may enter your eyes and injury may result Turn off the power switch at the following times otherwise the machine may operate if the start switch is pressed by mistake which could result in injury When threading the needle When replacing the needle When no...

Page 5: ...lease contact your nearest Brother dealer 3 Warning labels 1 3 Do not touch the cutter and hammer or press any objects against the machine while sewing as this may result in personal injury or damage to the ma chine 5 Direction of operation 5 3 3 2 1 4 Fingerguard Belt cover Needle bar guard Eye guard Belt cover Rear Hazardous voltage will cause injury Turn off main switch and wait 5 minutes befor...

Page 6: ...cations 66 9 23 Adjusting the position of limit switch L 52 specifications 67 9 24 Adjusting the position of limit switch R 52 specifications 67 10 SUMMARY OF DIP SWITCHES 68 10 1 Front panel DIP switches 68 10 2 Circuit board DIP switches 70 11 TROUBLESHOOTING 72 1 NAMES OF EACH PART 1 2 SPECIFICATIONS 2 2 1 Specifications 2 2 2 Optional parts 3 2 3 BAS PC 300 ProgrammingSoftwareforElectronicPatt...

Page 7: ...q Front cover t EMERGENCY STOP switch o Power switch w Hand switch y Upper shaft pulley 0 Motor e Cloth presser switch u Feed bracket 1 Operation panel r Start switch i Spool stand 2 Control box w e r t q 2 1 y u i o 0 1 NAMES OF EACH PART Fly indexer 0790Q 0791Q ...

Page 8: ...22 mm L3 22 26 mm L4 26 30 mm L5 28 32 mm L6 32 36 mm L7 36 40 mm Main regulator 0 5 MPa Knife pressure regulator 0 3 MPa DH4 B981 00 DH4 B981 01 10 50 mm 10 38 mm Men s clothes and ladies clothes Selected by DIP switch setting Selected by DIP switch setting Dual switch cloth presser switch and start switch or single switch Intermittent feed by three pulse motors X Y DO x 558 Nm80 Nm120 Schmetz 55...

Page 9: ...for use when sewing flys It allows from one to nine buttonholes to be set and automatically feeds the material Using this device makes the sewing of buttonholes for flys much quicker Eyelet buttonhole without taper Eyelet buttonhole with taper Straight buttonhole without taper Straight buttonhole with taper General sewing conditions can be set by means of the operation panel the operation panel DI...

Page 10: ...parts list for specification changes The sewing machine can be changed to any one of L1 L7 for 02 and 52 specifications by replacing the specified parts with the appropriate parts given below 02 specifications 52 specifications L R NOTE There is 10 mm of difference in the knife cutting position between L1 L4 and L5 L7 specifications Refer to page 60 Specifications buttonhole length L1 14 18 mm L2 ...

Page 11: ...plete otherwise the machine may operate if the start switch is pressed by mistake which could result in injury Be sure to connect the ground If the ground connection is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done Install...

Page 12: ...2 install the motor w 3 Align the holder plate e and the motor plate r with the bolts q and then install them with the four washers t and the four bolts y 4 Place the eight accessory cushions u and the four 4 accessory cushion collars i onto the motor base plate o and then install the motor as shown in the illustration y t e r q u u o w q i 0803Q 0801Q ...

Page 13: ...s 3 onto the circuit board when installing the bolts 1 Place the motor pulley q onto the shaft of the motor w 1 so that the key grooves are aligned and then tighten 1 the set screws e so that the center of the V groove in 1 the motor pulley q is aligned as closely as possible 1 with the center of the belt hole in the power table 2 Install the motor rear cover support r with the two flat 2 washers ...

Page 14: ...ttach the front left corner of the bed base to the work table in the same way as in the steps above 5 NOTE Make sure that steps 2 to 4 above have been completed before raising the machine head Raising the machine head 1 While holding the handles of the machine head q with both hands gently raise the machine head 1 NOTE Be sure to turn the power supply off before raising the machine head 2 If you w...

Page 15: ...ey q or the edge of the motor 5 Install the motor cover t with the three screws y NOTE After a long period of use the V belt will become run in and will loosen around the motor pulley When this happens turn off the power and adjust by the procedure given in step 4 above 3 6 Installing the oil container 1 Install the dust oiler support w to the base of the bed base q with the two screws e 2 Screw t...

Page 16: ...ch q with the two screws w q w w q 1 Install the air unit q to the underside of the work table with the two screws w 2 Install the valve unit e with the two screws r 3 Connect air tube 5 to the intermediate joint t of the air unit q and to the joint y of the valve assembly and 3 connect air tube 6 to joints u and i Connecting the valve cables 3 Insert the cable o which is coming out of the valve u...

Page 17: ...able for the hand switch y through the 2 cable hole u in the work table NOTE 2 Leave enough looseness in the cables so that they will 2 not be pulled when the machine head is tilted back 2 Adjust the looseness after all connections to the control 2 box are complete w q e y r t u 3 Connect the hand switch connector i to the control 3 box connector 4 Install the power switch o to the underside of th...

Page 18: ...er q of the control box 2 Pass the cables through the holes w and e in the 2 side of the control box 3 Loosen the screw t and then connect the three ground 3 cables r that are coming from the machine head 4 Securely insert each of the connectors y 3 as 3 indicated below e r o t i y u 0 q 3 2 w i o 2 3 1 0 y u 1 Connector y 12 pin with z mark Connector u 5 pin with x mark Connector i 9 pin with c m...

Page 19: ... tubes to the joints of the solenoid valve assembly using the illustration below as a reference Numbers are marked on each of the air hoses which come out of the sewing machine Plug 4 r e q w 3 13 Connecting the motor cables 1 If the lower thread trimmer is not installed solenoid valve 3 is not used 2 The auxiliary clamp arm can only be used for machines with 02 specification Label No 5 4 3 2 1 So...

Page 20: ...nsert the specification harness q into the control box con nector w NOTE Check that the label number on the specification harness q matches the movable knife R e movable knife L r thread handler t work clamp R y work clamp L u and movable knife driving cam i numbers before inserting the specification harness q If a connector with an incorrect label number is connected it may cause problems such as...

Page 21: ...nob w is turned 1 clockwise 2 Gently life knob r of the knife pressure adjustment 2 regulator e and turn it in the direction of the arrow in 2 the illustration 2 The pressure will increase when the knob r is turned 2 clockwise 2 The pressure for the knife pressure adjustment 2 regulator e is adjusted to 0 3 MPa Be careful not to 2 increase this pressure needlessly otherwise poor 2 cutting performa...

Page 22: ...e power supply until cords have been connected otherwise the machine may operate if the start switch is pressed by mistake which could result in injury 3 17 Connecting the power cord 1 Attach an appropriate plug to the power cord q The 1 green and yellow wire is the ground wire 2 Insert the plug into properly grounded AC power supply 2 NOTE Do not use extension cords otherwise machine 2 operation ...

Page 23: ...igh voltages are present can result in severe injury CAUTION Turn off the power switch and disconnect the power cord before installing any optional parts otherwise the machine will operate if the treadle is pressed by mistake which could result in injury 3 Open the front cover t of the control box and then pass the cable through the hole at the right 4 Insert the connector y in the position shown ...

Page 24: ... bar guide R 4 and feed bar guide L 5 and place it 4 on top of feed base L o and feed base R 2 4 Push down the chuck pin 6 and check that it goes 4 smoothly into all of the holes in the cloth feed bar 3 4 If it does not go in smoothly re adjust the installation 4 positions of feed base L o and feed base R 2 20 21 w t q e y r u o i 1 0 2 6 o 4 5 3 2 1 After disconnecting air tubes 0 and 1 insert th...

Page 25: ...wered 3 20 3 Replacing the plate presser and presser plate Remove the plate presser q and presser plate U w and replace them with plate presser I e and presser plate I r 3 20 4 Installing the valve unit 1 Install the valve unit q with the screw w 2 Remove the stopper plug with the P mark r from the valve unit e and then install the joint t 3 Connect the 6 mm diameter air tube u to joints t and y q...

Page 26: ...itch L u into the 15 pin connector terminals with matching numbers 7 Connect the three pins of the cylinder sensor i into the 15 pin connector so that the cable colors match the connector numbers as given in the table below If the cable colors are red white and black refer to the colors in brackets NOTE First disconnect the connector before inserting the pins and then after inserting the pins re c...

Page 27: ...eed drive cylinder For chucking cylinder For holding cylinder 3 20 7 Securing the air tubes and cables 1 Remove the screw length 8 mm q 2 Secure the air tube w and cable e with the cord holder r screw length 16 mm t and washer y Leave enough slack in the air tube w and cable e at this time to allow for the movement of the feed bracket u 50 51 52 53 50 51 52 53 A B 53 52 51 50 w e u y r q t 0856Q 0...

Page 28: ...harness q If a connector with an incorrect label number is connected it may cause problems such as damage to the sewing machine or thread trimming errors No No u i r e y No w q t 1 Install the hand start switch support plate q with the two screws w in the position shown in the illustration 2 Install the hand start switch e to the hand start switch support plate q with the two screws r 3 20 8 Insta...

Page 29: ...e oil level is low replenish the oil supply 4 1 1 Filling the arm oil tank 4 1 2 Filling the bed base oil tank 1 Pour approximately 10 cc of machine oil into the arm oil tank q until it is about four fifths full 1 Raise the machine head 2 Pour approximately 20 cc of machine oil into the bed base oil tank w until it is about four fifths full 3 Lower the machine head 4 2 Lubrication Oil these parts ...

Page 30: ... 8 1 Turn the upper shaft pulley q toward you until the mark on the pulley A is aligned with the notch in the pulley cover 1 w 2 Move the feed bracket e toward you 3 Turn the left and right plate pressers r in the directions indicated by the arrows 4 Lift up the clamp lever y and the notched section u of the right work clamp plate t remove the right work clamp plate t from the pin i and then pull ...

Page 31: ...dby condition will appear 3 on the display 5 2 Changing the lower thread and gimp thread trimming The sewing machine is set to lower thread and gimp thread trimming when it is shipped from the factory DIP switch C No 4 e is set to ON For setting the lower thread and gimp thread trimming to OFF carry out the following procedure NOTE For 00 specification be sure to set the lower thread and gimp thre...

Page 32: ... tighten the screw w 5 Remove the work clamp plates Refer to page 24 NOTE After removing the work clamp plates check aligned with the index mark t on the looper base before inserting the needle e when the looper base is turned fully to the right 6 Lower the finger guard q CAUTION Turn off the power switch before threading the thread otherwise the machine may operate if the start switch is pressed ...

Page 33: ...rk clamp plates refer to page 24 and then thread the lower thread as shown in the illustration below For upper thread trimming specifications 00 For upper and lower thread trimming specifications 01 02 and 52 5 CORRECT USE 0881Q 0881Q 0880Q 0883Q 0882Q 0879Q ...

Page 34: ... through the hole of the thread tension stud q Refer to 9 17 Adjusting the gimp length after trimming 02 52 Page 63 1 Insert the material so that it touches the right and left cloth guides q 2 The sewing margin can be adjusted to within 10 30 mm 3 Loosen the screws w at left and right and move the cloth guides q back and forth to adjust the sewing margin 00 01 02 52 10 30 mm 5 CORRECT USE q w q w ...

Page 35: ... setting position 1 Place the material fly on top of the feed bracket q and then feed the material fly in until it reaches horizontal 1 cloth set guide L w and horizontal cloth set guide R e Check that the right edge of the material fly is straight against the left edge of the vertical cloth set guide r at this time 2 The vertical sewing margin can be adjusted between 9 21 mm for L1 L4 and 9 11 mm...

Page 36: ... to the illustration and table below at this time Install the cloth feed plate L q to the cloth feed bar e with the screws w Installation position standard specification 3 4 D C D B C A Hole spacing No of holes 38 1mm 44 45mm 50 8mm A C B D Standard Large size E G I L K J H F Large size specification A 207 217 mm B 192 5 202 5 mm C 167 5 177 5 mm D 142 5 152 5 mm 3 4 5 6 L L J K K I G L J H F Hole...

Page 37: ...the main PROM This PROM is mounted in position q The PROM which is marked MT is the machine motor PROM This PROM is mounted in position w The PROM which is marked PL is the panel PROM This PROM is mounted in position e The PROM which is marked DA is the data PROM This PROM is mounted in position r The data PROM is only mounted when carrying out sewing based on data created using the BAS PC 300 r e...

Page 38: ...on panel part names Select switch option part names Indicator B Indicator C Switch C Switch B Indicator A Switch A RESET switch RESET indicator RESET switch KNIFE switch KNIFE indicator Panel DIP switch A Number display window Up switch POWER indicator Down switch Panel DIP switch C Panel DIP switch B 0904Q 0905Q ...

Page 39: ...s than 7 mm 2 Press the Up switch q or the Down switch w to set 2 the desired buttonhole length 2 NOTE 2 If the set buttonhole length is outside the allowable 2 setting range because of changes made to the 2 machine specifications the data will be 2 automatically changed so that it is within the 2 allowable range 2 Example For L1 specifications 2 If the buttonhole length has been set to 20 mm 2 an...

Page 40: ...for panel DIP switch A No 4 and 3 No 5 to set the desired stitch pitch 4 Turn on the power Standard number of eyelet stitches No 1 OFF No 2 No 3 Stitch pitch 0 9 mm 1 0 mm 1 1 mm 1 2 mm 1 3 mm 1 4 mm 1 6 mm 1 8 mm OFF ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF OFF ON OFF ON ON ON OFF ON ON ON No 4 No 5 No of eyelet stitches Standard no of stitches 2 Standard no of stitches 1 Standard no of stitche...

Page 41: ...operation method 4 Turn on the power E Setting the eyelet shape 1 Turn off the power 2 The eyelet shape can be selected from four types of 2 cutting shape 2 Knife No 2 is normally installed Select the number 2 for the eyelet shape that matches the number of the 2 installed knife 3 Change the settings for panel DIP switch B No 2 and 3 No 3 to set the desired knife operation method 4 Turn on the pow...

Page 42: ...panel DIP switch B No 7 and 3 No 8 to set the desired sewing speed 4 Turn on the power F Setting the offset setting the taper bar tacking overlap 1 Turn off the power 2 The offset can be set to 1 2 mm or 1 5 mm 3 Change the setting for panel DIP switch B No 4 to set 3 the desired offset 4 Turn on the power No 4 Offset 1 2 mm 1 5 mm ON OFF No 5 No 6 Cutting space 0 1 mm 0 mm 0 1 mm 0 2 mm ON ON ON ...

Page 43: ...e cloth setting position can be set to either left setting 2 or horizontal setting 2 Setting is possible when the cloth setting bar is at the 2 left setting position 3 Change the settings for panel DIP switch C No 6 to 3 set the desired cloth setting position 4 Turn on the power 4 When set to the left setting position cloth setting is 4 always carried out at the left setting position 4 When set to...

Page 44: ...e setting range is 0 9 and A 2 If the number of home position start cycles is set to 2 5 home position starting will occur once for each 2 five sewing operations for 52 specifications once 2 for each five pieces of cloth fly 2 If the number of home position start cycles is set to 2 0 home position starting will not be carried out 2 If the number of home position start cycles is set to 2 A home pos...

Page 45: ...uminate Selecting program C Press switch C Indicator C will then illuminate 2 Changing the program settings 3 Press the KNIFE switch t so that the KNIFE indicator 3 illuminates This completes the changing if the program settings 2 Press the Up switch w or the Down switch e so 2 that 22 is displayed in the number display window 2 r 1 Press switch A q so that indicator A illuminates When the power i...

Page 46: ...tch w or Down switch e 3 Set the knife to ON or OFF by pressing the KNIFE switch q This is indicated at the right of the number display window r 4 The contents of the memory switch are entered by pressing the start switch and the normal starting condition will be ready is displayed No ON OFF Description 0 1 ON OFF ON OFF ON OFF ON OFF ON OFF 1 1 2 2 3 3 4 9 A F Adds 0 3 mm to normal setting value ...

Page 47: ... the power and check Set the needle bar to the highest position and then press the RESET switch Turn off the power and check Turn off the power and check Turn off the power and check Turn off the power and check Turn off the power and check Turn off the power and check 52 specifications only Explanation EMERGENCY STOP switch was pressed Machine head is raised machine head safety switch is off Clot...

Page 48: ...ed machine head safety switch is off Limit switch R does not turn on and off when the sewing machine is starting Limit switch L does not turn on and off when the sewing machine is starting Cylinder sensor does not turn on and off when the sewing machine is starting Needle up signal does not turn on and off when the sewing machine is starting Needle down signal does not turn on and off when the sew...

Page 49: ...play window turn the upper shaft pulley by hand to raise the needle to the needle 2 up position so that the marks are aligned 3 To continue sewing press the start switch w 3 The RESET indicator will switch off the 60 will be cleared from the number display window and sewing will 3 begin again 3 To stop sewing press the RESET switch e 3 The RESET indicator will switch off the 60 will be cleared fro...

Page 50: ...work clamp and then press the cloth presser switch y to lower the work clamp Then release the cloth presser switch y 6 To reset the material to be sewn press the cloth presser switch y once more The work clamp will then be raised 7 Press the start switch w Sewing will then start 8 When sewing is finished the work clamp will be raised 8 To repeat this operation repeat steps 6 and 7 above NOTE After...

Page 51: ...w to increase the upper thread tension Turn the lower thread tension adjustment knob w in the direction indicated by the arrow to increase the lower thread tension 7 3 3 Adjusting the lower thread take up spring tension and stroke Tension adjustment Loosen the screw e and turn the thread take up spring support r in the direction indicated by the arrow to increase the tension of the spring t Stroke...

Page 52: ...g space value is 0 7 4 1 Relationship between knife position and eyelet shape When cutting after sewing this function moves the outer needle down positions in accordance with the knife shape so that the seam is not cut by the knife 1 When cutting after sewing set the cutting space to an 1 appropriate value so that the seam is not cut by the 1 knife 1 The cutting space should generally be set to ar...

Page 53: ...en single pedal and dual pedal operation 1 Turn off the power 2 Change the setting of DIP switch C No 1 on the control 2 circuit board 2 OFF To use both pedals cloth presser switch and 2 OFF start switch 2 ON To use only one pedal start switch 3 Turn on the power and press the start switch q 4 Move the feed bracket to the cloth setting position 5 Sewing can then be carried out as normal Refer to 5...

Page 54: ... appear to indicate feed mode 4 Press the start switch w 4 The feed bracket e will move to the cloth setting position 5 Press the cloth presser switch r The work clamp will be lowered 6 Press the start switch w 6 The feed bracket e will move to the sewing start position 6 When the start switch w is pressed the feed bracket e will move to the next sewing start position 6 To return the feed bracket ...

Page 55: ...ove to the sewing start position 7 Turn the upper shaft pulley toward you 7 The feed bracket e will move to the next sewing position in accordance with the rotation of the upper shaft 7 NOTE If the upper shaft pulley is turned in the wrong direction the feed bracket timing may become disrupted 7 To return the feed bracket e to the cloth setting position while sewing 7 1 Press the EMERGENCY STOP sw...

Page 56: ...he power switch before starting any cleaning work otherwise the machine may operate if the start switch is pressed by mistake which could result in injury Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any ci...

Page 57: ... container q is full of oil remove the oil 1 container q and let the oil drain out NOTE Clean up any oil that may have been spilt onto the floor 8 3 Checking the air filter 1 Close the air cock q 2 Turn the screw w to release any air and water in the 2 drain q w q 0945Q 0946Q ...

Page 58: ... of any parts which use the pneumatic equipment If the power switch and air need to be left on when carrying out some adjustment be extremely careful to observe all safety precautions Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power cord from the wall outlet at the following ti...

Page 59: ...calipers to take the same measurement as taken in 3 step 2 Find the difference between the measurements taken in this step and in step 2 4 Follow the same procedure as in step 3 above to find the difference between the two measurements when the 4 needle e is at the outside sewing position 4 When the needle e is at the inside sewing position the tip of the eye looper r should be aligned with the ce...

Page 60: ...e not aligned with the center of the needle carry out the adjustment below 5 Raise the machine head 5 Loosen the two screws e of the lower shaft timing pulley hold the upper shaft pulley so that it doesn t move and then turn the lower shaft cam r in the direction indicated by the arrow until the tip of the eye looper t is aligned with the center of the needle y Once they are aligned tighten the tw...

Page 61: ... clamp t and the needle bar level feed link y can maintain their oil films This will help to ensure that the needle bar turns smoothly 9 5 Adjusting the clearance between the looper and needle Be sure to carry out this adjustment after changing the size of the needle The clearance between the tip of the looper and the needle should be 0 05 0 2 mm 1 Loosen the looper screw q and then adjust the cle...

Page 62: ...st so that the looper clasps the upperthread securely 9 7 Adjusting the spreader mounting positions 1 Loosen the screw e and adjust the position of the left spreader stopper r so that the fork of the left spreader q 1 is aligned with the lower thread guide hole of the eye looper w 2 Loosen the screw u and adjust the position of the right spreader stopper i so that the tip of the right spreader t 2...

Page 63: ...ew e to adjust the spreader timing 3 After adjusting tighten the nut w and the screw q 9 9 Adjusting the needle racking width stitch width 1 Loosen the needle racking adjustment nut q and then adjust the needle racking width by sliding the adjustment screw w vertically along the oval slot 1 The stitch width becomes smaller as the adjustment screw w is moved upward NOTE If the needle racking width ...

Page 64: ...g length is set in accordance with the length of the hammer grind the hammer as shown in A in the above illustration 2 Hammer length A Knife cutting length 1 5 mm 3 When installing the hammer push in the pin e and then tighten the screw q 3 Do not use knives with different numbers on the same hammer If knives with different numbers are used 3 accurate cutting will not be possible and the knife wil...

Page 65: ...mmer has been ground correctly check whether the tip of the knife is worn If the tip is worn replace the knife Do not use the old hammer after the knife has been replaced otherwise it may damage the tip of the knife Adjusting the contact between the knife and the hammer To see the knife incision more easily color the cutting surface of the hammer with a marker pen 1 Operate the hammer three times ...

Page 66: ...he contact between the knife and the hammer while referring to 9 11 Adjusting the contact between the knife and the hammer q 9 13 Adjusting the cutting pressure 9 12 Replacing the knife After checking that there is no clearance between the stopper plate q and the knife w loosen the bolt e and then remove the knife w Insert the new w into the stopper plate q and then tighten it with the bolt e NOTE...

Page 67: ...or the left and right work clamp plates are equal 2 Note It is usually sufficient for one work clamp plate to open by 0 8 mm w q w q 1 Switch the mode to feed mode Refer to page 37 2 Lower the work clamp and then use calipers to measure the distance a 3 Press the start switch The feed bracket will move and then the left and right work clamp plates will open 4 Use calipers to measure the distance b...

Page 68: ...pped stitches may result 9 16 Adjusting the trimming of the lower thread and gimp 00 01 The lower thread and gimp should be trimmed at the correct time after the feed bracket has returned to the home position Thread trimming operation can be checked in steps while manual mode is active Refer to Using manual mode on page 49 1 The mechanism is adjusted so that the lower thread and gimp are separated...

Page 69: ...ht movable knife e and left movable knife r mesh and the thread is cut 9 17 Adjusting the gimp length after trimming 02 52 Adjust so that approximately 4 mm of the gimp thread is coming out from the throat plate q 1 Loosen the screw w and move the gimp thread guide J e in the direction of the arrow to adjust the length Approx 4 mm Becomes longer Becomes shorter 9 18 Lower thread presser 02 52 The ...

Page 70: ... body turned 6 full rotations from A side needle valve the maximum height B side needle valve At a height of approximately 9 1 B side needle valve mm from the surface of the valve B side needle valve body turned 7 full rotations from B side needle valve the maximum height 9 19 Auxiliary clamp arm 02 52 Trimming of the lower thread and gimp is carried out when the work clamps rise The auxiliary cla...

Page 71: ...at it 1 moves to the left 2 Pull the cylinder rod r of the cylinder e as far to the right as it will go 3 Insert the pin t into the home position hole u refer to page 66 in the cloth feed bar y 4 Turn the bolt w to move it to the right until it gently 4 touches the cloth feed bar y 5 Tighten the nut q to secure the bolt w in position 6 Check that the pin t fits smoothly into the home position hole...

Page 72: ...m 1 1 2 and 44 45 Example mm 1 3 4 38 1 mm 44 45 mm 5 From now on if you want to have hole intervals of 38 1 mm 1 1 2 move the stopper block w so that it is against the right hand set screw collar q and secure it in this position and if you want to have hole intervals of 44 45 mm 1 3 4 move the stopper block w so that it is against the left hand set screw collar r and secure it in this position 5 ...

Page 73: ... w 4 Tighten the two bolts q 9 24 Adjusting the position of limit switch R 52 specifications Limit switch R must turn on when the cloth feed bar is at the left setting position 1 Loosen the two screws q 2 Move the cloth feed bar w to the left setting position 3 Adjust the position of feed bar guide R u so that limit switch R e turns on when the roller r is pressed by the dog 3 y of cloth feed plat...

Page 74: ...ch pitch 0 9 mm No of eyelet stitches Standard no of stitches 1 No of eyelet stitches Standard no of stitches No of eyelet stitches Standard no of stitches 1 No of eyelet stitches Standard no of stitches 2 Taper bar tacking length 10 mm Taper bar tacking length 9 mm Taper bar tacking length 8 mm Taper bar tacking length 7 mm Taper bar tacking length 6 mm Taper bar tacking length 5 mm Taper bar tac...

Page 75: ...ing speed 2 000 rpm Sewing speed 1 800 rpm Sewing speed 1 600 rpm Sewing speed 1 400 rpm No 1 2 3 4 5 6 7 8 Panel DIP switch B ON OFF ON ON ON OFF OFF ON OFF OFF ON OFF ON OFF ON OFF ON OFF ON ON ON OFF OFF OFF OFF ON Description Spare Feed mode Manual mode Automatic mode Changing cutting on off stitch length settings prohibited Changing cutting on off stitch length settings allowed Spare Spare Sp...

Page 76: ...en raised to a specified position next operation starts For extra heavy materials For heavy materials For light materials After specified time has passed since hammer started to be raised next operation starts DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where ...

Page 77: ... with the DIP switches set as follows 1 2 3 4 5 6 7 8 OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF Description Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare Spare No 1 2 3 4 5 6 7 8 Circuit board DIP switch D 1001Q ...

Page 78: ...s too strong or too weak Needle and looper adjustment is incorrect or clearance is incorrect Thread breaks Skipped stitches occur Needle breaks Thread tension control nut pressure is too strong Adjust to an appropriate pressure Thread is of poor quality Use a better quality thread Thread is too thick for the needle Use a differently sized needle Needle groove or needle hole are not smooth Replace ...

Page 79: ...ing fed out 54 60 Knife is blunt Refer to the remedies given under Skipped stitches occur in this troubleshooting chart Movable knife is not picking up the needle thread because the last stitch is being skipped 72 Install the upper thread trimmer knife so that it cuts only one side of the upper thread loop 62 Adjust the needle bar height or the looper and spreader height 52 Install the upper threa...

Page 80: ...INSTRUCTION MANUAL Printed in Japan 118 981 S91981 122 2001 03 H 2 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan Phone 81 52 824 2177 BROTHER INDUSTRIES LTD ...

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