ELNA eXpressive 970 Service Manual Download

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Replacing the Tension Unit Cover

Setscrews

Spool stand

Tension unit cover

To remove:
1. Remove the setscrews and spool stand.

To attach:
2. Attach the spool stand and tighten the setscrews.

Setscrews

Replacing the Spool Stand

To remove:
1. Remove the setscrews and tension unit cover.

To attach:
2. Attach the tension unit cover and tighten the setscrews.

Setscrews

Summary of Contents for eXpressive 970

Page 1: ...SERVICE MANUAL MODEL eXpressive 970...

Page 2: ...and Thread Reference Table 11 Adjusting the Bobbin Thread Tension 12 Checking the Lowest Position of the Needle 13 Replacing the Needle Bar Rest 14 Replacing the Take up Lever Cam Roller 15 Adjusting...

Page 3: ...ion Stopper Plate 34 Replacing the Thread Take up Lever 35 Adjusting the Check Spring Tension 36 Adjusting the Check Spring Stroke 37 Adjusting the Thread Catcher Holder 38 Replacing the Thread Catche...

Page 4: ...rriage Belt 53 Adjusting the Timing Belt Tnsion 54 Replacing the Timing Belt 55 Adjusting the Motor Belt Tension 56 Replacing the Motor Belt 57 Replacing the DC Motor 58 To Reset Motor Drive Time 59 A...

Page 5: ...remove 1 Remove the setscrews and spool stand To attach 2 Attach the spool stand and tighten the setscrews Setscrews Replacing the Spool Stand To remove 1 Remove the setscrews and tension unit cover...

Page 6: ...the LED lamp connector and K board connector To attach 4 Connect the LED lamp connector and K board connector 5 Attach the static head cover right with the two setscrews A Attach the caps 6 Attach the...

Page 7: ...nd the hook on handwheel side 2 Remove caps and setscrews A Remove the right cover To attach 3 Attach right cover with setscrews A and caps 4 Attach the head cover right Do not bind cords when attachi...

Page 8: ...it from the base cover To attach 3 Attach the machine into the base cover 4 Tighten the six setscrews A securely Replacing the Base Cover and Bed Cover Bed Cover To remove 1 Remove the setscrew A Rem...

Page 9: ...rs or scratches 4 Lower guide plate a There should be no burrs or scratches 5 Needle a The needle should not be bent or blunt To check the needle Touch the tip of the needle and slide it over on your...

Page 10: ...esser foot 8 Hook race a There should be no burrs or scratches b The tip of hook race should not be blunt c There should be no detectable play in the hook and hook race 9 Thread keeper a There should...

Page 11: ...en the needle clamp screw 2 Remove the needle To attach 3 Insert the needle into the needle clamp with the long groove facing you Push the needle up as far as it will go 4 Tighten the needle clamp scr...

Page 12: ...priate size of needle for threads and fabrics to be sewn An inappropriate size of needle may cause skip stitches thread breakage or loose seam Please refer to the table below and select the suitable n...

Page 13: ...front hole in the direction of arrow measure the thread tension with a tension meter The thread tension should be in the range of 20 30gf If not adjust the thread tension by turning the adjusting scre...

Page 14: ...clockwise until the indicator reads 0 2 mm and read the angle A of the index disk Turn the handwheel counterclockwise until the indicator reads 0 2 mm and read the angle B of the index disk Calculate...

Page 15: ...l the needle bar main shaft up and remove it from the machine 4 Loosen the setscrew D and remove the needle bar rest from the needle bar main shaft To attach 5 Reverse the procedure above Attach the n...

Page 16: ...up lever unit and washer 5 Loosen the setscrew Remove the cam roller shaft and cam roller To attach 6 Reverse the procedure above When attaching the thread take up lever shaft tighten the screw while...

Page 17: ...sen the setscrew on the cam clamp and turn the take up lever cam so the positioning pin can go into the pin grove on the cam Turn the handwheel to set the index disk at 6 Tighten the setscrew on the c...

Page 18: ...the main shaft up Remove the presser foot block unit 4 Remove the snap ring E Loosen the setscrews B 2 pcs Push the supporting shaft from the backside and pull the supporting shaft out to the front R...

Page 19: ...18 Replacing the Presser Foot Cam 2 5 Loosen the setscrews C 2 pcs 6 Remove the setscrew B Pull the crank out to the front to remove it Setscrew C Crank unit Setscrew B...

Page 20: ...ase MOLYKOTE R EM 30L 8 Reverse the procedure to reinstall the parts Do not attach the covers yet 9 Check the lowest position of the needle refer to page 13 of service manual 10 Adjust the position of...

Page 21: ...TE The presser foot will spring down when the needle clamp is removed 3 Remove the setscrew and replace the presser foot 4 Attach the needle needle clamp and needle clamp cushions Tighten the needle c...

Page 22: ...2 7 Turn the handwheel to set the index disk at 0 L 8 Insert the 1 2 mm thick gauge between the needle plate and the presser foot 9 Tighten the setscrew 10 Turn the handwheel to reset the index disk...

Page 23: ...panel head cover 2 Remove the 2 setscrews A and the tension control unit 3 Loosen the needle clamp screw and remove the needle 4 Lower the needle bar Loosen the hexagonal socket screw and remove the...

Page 24: ...es 30 degrees right to the front Screw the needle clamp screw through the needle clamp and into the lower hole in the needle bar Insert the needle with the long groove facing front in line with the up...

Page 25: ...Remove the needle bar height gauge 22 Turn the hand wheel to match the alignment line on it with the joint of the right and left covers the upper shaft will be set at 270 degrees To replace the sprin...

Page 26: ...the thread catcher connector Remove the two setscrews A setscrew B and the thread catcher To attach 3 Connect the thread catcher connector Tighten the setscrews A and setscrew B while pressing the thr...

Page 27: ...catcher guide 3 Remove the thread catcher hook screw Remove the thread catcher hook To attach 4 Attach the thread catcher hook with the thread catcher hook screw 5 Attach the thread catcher guide with...

Page 28: ...enoid 3 The slope cam should slide on the slope cam guide smoothly Clean the solenoid if there is any lint or dust on it 4 Attach the jump solenoid to the machine Tighten the setscrews Setscrews shoul...

Page 29: ...rection of the arrows If there is a detectable play loosen the setscrew and tighten it while pressing the adjusting roller against the needle drop adjusting rail 3 Adjust the needle drop position see...

Page 30: ...eft or right side of stopper screw on the rail shaft 4 Turn the idler gear to move the moving head to the end of the rail shaft with the stopper screw removed Support the moving head securely while re...

Page 31: ...hole 9 Check the needle drop position The needle drop position should be the center of the needle hole If the needle drop position is off position to the front or rear adjust the needle drop position...

Page 32: ...eedle bar No 3 down to engage the needle bar clutch 2 Turn the handwheel until the needle goes down into the needle hole Loosen the two setscrews Adjust the needle drop position adjusting plate Center...

Page 33: ...e bar supporter screw 6 Insert the needle bar height gauge into the hook 7 Adjust the needle bar height so the tip of needle slightly touches the gauge 8 Adjust the direction of needle clamp as illust...

Page 34: ...far as the desired part can be removed 4 Insert the needle bar down into the frame and put the parts on the needle bar as it goes 5 Attach the presser foot 6 Adjust the needle height see 32 7 Adjust...

Page 35: ...22 and 23 2 Remove the six setscrews and rotation stopper plate To attach 3 Attach the rotation stopper plate with the six setscrews The setscrews should be positioned at the center of each holes when...

Page 36: ...f the arrow Remove the thread take up lever to replace 5 Replace the thread take up lever 6 Attach the E ring 7 Insert a 0 2 mm thick gauge between the moving head case and thread take up lever Tighte...

Page 37: ...s A and lower thread guide plate 2 Remove setscrew B two setscrews C and thread catcher panel 3 Hook the tail of the check spring into the one of three slits Use a narrow screwdriver to hook the check...

Page 38: ...need to adjust the stroke of the check spring when it is replaced 1 Loosen the setscrew Move the adjuster up or down so the distance between the top of the check spring and the bottom side of the thre...

Page 39: ...read catcher touches the upper surface of the lower thread catcher holder NOTE If an adjustment allowance of the thread catcher holder is not enough loosen the three setscrews B and move the thread ca...

Page 40: ...ews B and remove the two spacers S and lower thread catcher holder 5 Peel the loop tape off Stick a new loop tape on the bottom side of the thread catcher holder aligning with the front edge of the ho...

Page 41: ...ral moving unit To attach 6 Attach the lateral moving unit and loosely fix it with the two setscrews B 7 Push the needle bar down and rotate the handwheel to set the index disk at L 8 Adjust the posit...

Page 42: ...set the index disk at 21 NOTE To prevent the needle from hitting the hook body hold the hook with the hook point up while turning the handwheel 5 Turn the hook to align the hook point with the right s...

Page 43: ...en the setscrew to move the hook stopper 2 Move the hook stopper to align the center with the needle and make a 0 6 0 8 mm clearance between the hook Tighten the setscrew securely Setscrew Align the c...

Page 44: ...t Replace the thread cutter driving roller 4 Insert the 0 05 mm thickness gauge between the lever unit and thread cutter driving roller Tighten the setscrew securely 5 Attach the lever unit to the fra...

Page 45: ...o open the Cut Motor adjusting window Press Divide key to move the dynamic cutter blade forward 3 Loosen the setscrew and remove the drive shaft ring 4 Remove the cutter drive shaft unit from the fram...

Page 46: ...cutter blade 4 Attach the static cutter blade and tighten the set screws while pressing the static cutter blade in the direction of the arrow NOTE If the dynamic cutter blade interferes with the left...

Page 47: ...hould extends 0 3 to 0 5 mm from the edge of the static cutter blade If there is a gap between the edge of the static cutter blade and the dynamic cutter blade adjust the height of the static cutter b...

Page 48: ...to the home position 4 Loosen the setscrew and turn the pivot pin to adjust the position of the dynamic cutter blade so the front tip of the dynamic cutter blade is in line with the center of the need...

Page 49: ...he bobbin thread 3 Loosen the nut and turn the adjusting screw to adjust the clamping pressure 4 Pull the bobbin thread with a tension gauge and read the tension when the bobbin thread is coming out T...

Page 50: ...n the bobbin Tighten the two setscrews A securely NOTE The clearance between the bobbin and the tips of the thread keeper should be 1 4 1 8 mm 4 Loosen the setscrew B and move and press the stopper ag...

Page 51: ...600 grams when the upper portion touches the lower portion 4 If the belt tension is too tight or loose slightly loosen the two setscrews B and move the X belt pulley in the direction of the arrow to a...

Page 52: ...shift the X belt pulley in the direction of the arrow 5 Remove the E ring and pull the X belt pulley shaft to remove the X belt pulley 6 Remove the two setscrews D and drive pulley shaft unit 7 Repla...

Page 53: ...the base frame and push the Y carriage timing belt The gauge should read 280 grams when the upper portion touches the lower portion 4 If the belt tension is too tight or loose slightly loosen the two...

Page 54: ...s A and shift the Y belt pulley in the direction of the arrow 4 Remove the E ring and pull the Y belt pulley shaft to remove the Y belt pulley 5 Replace the Y carriage belt 6 Attach the parts removed...

Page 55: ...lt The gauge should read 300 grams when the belt deflect 5 mm 3 If the belt tension is too tight or loose remove the three setscrews A and CPU board then slightly loosen the two setscrews B and move t...

Page 56: ...lt see page 57 5 Loosen the two setscrews C and remove the idler 6 Replace the timing belt 7 Attach the parts removed in steps and 5 8 Adjust the timing belt tension see the previous page 9 Check the...

Page 57: ...illustrated and push the timing belt The gauge should read 300 grams when the belt deflect 3 mm 3 If the belt tension is too tight or loose slightly loosen three setscrews and move the motor in the d...

Page 58: ...see pages 4 6 2 Remove the two setscrews A and the pointer 3 Remove the three setscrews B and DC motor 4 Replace the motor belt Attach the motor and motor belt 5 Adjust the motor belt tension see the...

Page 59: ...ages 4 6 2 Disconnect the motor connector Remove the three setscrews A and DC motor 3 Attach the DC motor and tighten the three setscrews A slightly Connect the motor connector 4 Adjust the motor belt...

Page 60: ...1302 To Reset Motor Drive Time To reset motor drive time 1 2 Press the CLEAR key to reset the motor drive time clock 3 Turn the power switch OFF A warning message will appear when the motor drive time...

Page 61: ...nd turn it clockwise until the indication changes from L to H Tighten the set screw 4 Turn the handwheel clockwise The indication next to Needle Change should change from L to H when the index disk is...

Page 62: ...n The indication next to NCHM Init Sen should be H To adjust the stop position loosen the setscrew and turn the stop positioning shield plate Tighten the setscrew NOTE The shield plate should not inte...

Page 63: ...w 4 Loosen the two setscrews 5 Move the needle stop sensor to the left until the indication next to NCHM No Sen turns H 6 Move the needle stop sensor slowly to the right until the indication next to N...

Page 64: ...des of the hoop 5 Loosen the two setscrews A slightly Move the Y carriage sensor plate slowly to the front until the indication under Y changes from H to L Tighten the two setscrews A 6 Loosen the two...

Page 65: ...uides white under the cord guide plate Nylon clip Cable guide black Setscrew Bending the cable guide black Bend the cable guide black in line with the left edge of the cord guide plate upper part and...

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ELNA eXpressive 970, Service Manual

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