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ELNA Star Edition, Service Manual

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ELNA Star Edition Service Manual Download Page 32

30

TO REMOVE:

1.  Remove the front cover and the rear cover (see pages 6-8).
2.  Remove 2 setscrews.
3.  Remove E-ring.
4.  Remove stepping motor (feed).

TO INSTALL:

5.  Follow the above procedures in reverse.

NOTE:

 * Check the stretch stitch balance after replacing the stepping motor.

REPLACING STEPPING MOTOR (FEED)

Setscrews (2)

E-ring

Stepping motor (Feed)

Summary of Contents for Star Edition

Page 1: ...SERVICE MANUAL MODEL Star Edition...

Page 2: ...T 15 NEEDLE SWING TIMING 16 NEEDLE THREAD TENSION 17 STRETCH STITCH FEED BALANCE 18 REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREADER PLATE 19 ADJUSTING BUTTONHOLE LEVER POSITION 20 REPLACING THE ELEC...

Page 3: ...HA x 11 blue tip needle Adjust the presser bar level to make the pressure stronger See mechanical adjustment Needle bar height See mechanical adjustment Needle to hook timing See mechanical adjustment...

Page 4: ...uch thread is wound on the bobbin 3 Lint is stuck inside the bobbin holder 4 Thread quality is too low 5 Thread is jamming around the bobbin holder Set the bobbin thread correctly Adjust the position...

Page 5: ...backlash lower shaft gear Eliminate the looseness See part removal and replacement driving motor dc motor Oil all moving parts P 14 P 27 P 31 7 Deformation pattern 1 Inappropriate feed balance 2 Inapp...

Page 6: ...4 SERVICE ACCESS 1 FACE COVER TO REMOVE 1 Remove the setscrew A and remove the face cover TO INSTALL 2 Follow the above procedure in reverse Face cover Setscrew A...

Page 7: ...the left and remove the 4 setscrews A remove the bed cover TO INSTALL 2 Set the drop lever to the left and install the bed cover Secure the bed cover with the 4 setscrews A SERVICE ACCESS 2 Setscrew...

Page 8: ...screw C and D 3 Remove the cap and loosen setscrew E 4 Disconnect all the connectors from the circuit board A NOTE Do not disconnect the connectors by pulling on cord To disconnect grasp the connector...

Page 9: ...CCESS 3 2 FRONT COVER TO REMOVE 5 Disengage the 6 hooks indicated by white arrows and clear the feed balancing dial 6 Remove the front cover TO INSTALL 7 Follow the above procedure in reverse Feed bal...

Page 10: ...7 2 Loosen setscrews A B C D E and F then remove the rear cover NOTE Remove the presser lifter from the rear cover first while presser lifter lowered TO INSTALL 3 Follow the above procedure in reverse...

Page 11: ...the foot and the feed dog window on the needle plate should be parallel 1 Remove the face cover see page 4 and raise the presser foot Loosen the setscrew to adjust the presser foot height 6 0 mm and t...

Page 12: ...s 1 Remove the face cover see page 4 2 Turn the power switch on and check the needle drop position 3 If the needle drop is out of position adjust it to proper position by turning the adjusting screw s...

Page 13: ...the pattern simple zigzag maximum zigzag width 3 Remove the bed cover see page 5 4 Turn the handwheel toward you and set the needle bar at the lowest position 5 Loosen the 2 setscrews on the lower sh...

Page 14: ...ttern simple zigzag maximum zigzag width 4 Turn the handwheel toward you until the tip of hook meets the right side of the needle 5 Loosen the setscrew 6 Adjust the height of the needle bar by moving...

Page 15: ...B C then slightly tighten the hinge screw C 2 Turn the handwheel toward you to bring the hook point behind the needle Adjust the clearance between the test pin and the point of the hook in the left a...

Page 16: ...0 8 mm If there is more than 0 8 mm play adjust as follows ADJUSTMENT PROCEDURE 1 Remove the bed cover see page 5 and loosen the setscrew 2 Turn the lower shaft bushing eccentric in the direction A w...

Page 17: ...urn the power switch on 3 Select the straight stitch pattern with maximum length 4 Turn the handwheel toward you to set the feed dog at the highest position 5 Loosen the setscrew and nut 6 Adjust the...

Page 18: ...ly with your hand until the needle start to swing Loosen the setscrew and turn the upper shaft shield plate in the direction of A If the swing point is higher than 7 5 mm B If the swing point is lower...

Page 19: ...within the above limit adjust as follows 1 Set the tension dial at 4 2 Lower the presser foot 3 Remove the front cover see page 6 7 2 Pull the spring D away from the lead screw 3 If the top tension is...

Page 20: ...r 3 Enter the adjusting mode Sew the stitch pattern 8 until the machine stop automatically and check the stitch length Standard length of five 8 characters 32 mm to 40 mm 4 Remove the base cap 5 If th...

Page 21: ...n B and push it up to snap fit TO ADJUST THE THREADER PLATE POSITION 1 If the hook on the threader plate touches the left or right side of the needle hole loosen setscrew C and adjust the hook positio...

Page 22: ...etween the slider and the buttonhole foot 6 Turn the adjusting screw to the left until the LED display changes from L to H 7 Next turn the adjusting screw right until the LED display changes from H to...

Page 23: ...by pulling on the cord To disconnect grasp the connector not the cord Connect the connector to the connector post of the same color on the circuit board Bobbin winder switch Upper shaft sensor Lamp B...

Page 24: ...to the machine Notes Be careful the sewing machine may start running in its own while in test mode Turn off the power switch before replacing any parts Repeat the diagnostic test until the problem ha...

Page 25: ...is model 06 Buttonhole Sensor Procedure Turn on the power switch while simultaneously pressing the needle up down button and start stop button Press the start stop button five times to select menu ite...

Page 26: ...ns 278 The maximum value should be 370 to 390 When the speed control lever is at the left LED displays 00 The indicated value hexadecimal increase as you move the speed control lever to the right and...

Page 27: ...sen 7 setscrews and remove the circuit board A TO INSTALL 4 Follow the above procedures in reverse NOTE Do not disconnect the connectors by pulling on cord To disconnect grasp the connector not the co...

Page 28: ...ve the board F TO INSTALL 4 Follow the above procedures in reverse NOTE Insert the lower part of the board F into the hole of rear cover when attaching the board F Check function of the each buttons n...

Page 29: ...elt with 2 setscrews 2 Loosen the setscrews slightly and move the motor up or down to adjust the motor belt tension The belt should deflect 7 9 mm when applying 300 grams of load to the middle of the...

Page 30: ...en 2 setscrews A and a setscrew B then remove the switching regulator TO INSTALL 3 Follow the above procedures in reverse NOTE Cords should not contact the lower shaft motor belt etc REPLACING SWITCHI...

Page 31: ...ages 6 8 2 Remove 2 setscrews 3 Remove E ring 4 Remove stepping motor zigzag TO INSTALL 5 Follow the above procedures in reverse NOTE Check the needle drop position after replacing the stepping motor...

Page 32: ...s 6 8 2 Remove 2 setscrews 3 Remove E ring 4 Remove stepping motor feed TO INSTALL 5 Follow the above procedures in reverse NOTE Check the stretch stitch balance after replacing the stepping motor REP...

Page 33: ...y parts need to be lubricated OIL Use good quality sewing machine oil at the points A B C D E F G H J K indicated by black arrows GREASE White grease is recommended for use on gears and cam surfaces I...

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