ELNA Elnita ec 30 Service Manual Download

Page: 29 / 29

SWITCHING REGULATOR UNIT

TO REMOVE:
1. Remove the front cover and the rear cover. (Refer to pages 6 and 7.)

2. Remove the setscrews (3 pcs.) and the switching regulator with cords.

TO ATTACH:

3. Follow the above procedures in reverse.

Be sure to connect the connectors (switching regulator connector (white) and ErP switch connector (Red)) to

the circuit board A (Refer to page 23).

* ErP switch (Red) is only for the applicable model.

REPLACING THE ELECTRONIC COMPONENTS

Switching

regulator

Setscrew

Summary of Contents for Elnita ec 30

Page 1: ...SERVICE MANUAL MODEL ec 30 First Edition 25 June 2020...

Page 2: ...OTARY HOOK 12 FEED DOG HEIGHT 13 BACKLASH BETWEEN HOOK GEAR AND LOWER SHAFT GEAR 14 TOP TENSION 15 STRETCH STITCH FEED BALANCE 16 REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREADER PLATE 17 SELF DIAGNO...

Page 3: ...d sewing needle and the thread Use a HAx1 11 blue tip needle See mechanical adjustment Adjustment of Needle bar height See mechanical adjustment Adjustment of Hook timing See mechanical adjustment Cle...

Page 4: ...ead 1 Bobbin holder is incorrectly threaded 2 Too much 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 S...

Page 5: ...ot enough oil 5 Upper shaft gear is loose Eliminate the backlash Eliminate the looseness See part removal and replacement Driving motor DC motor Oil all moving parts Eliminate the looseness P 14 P 14...

Page 6: ...4 CHANGING EXTERNAL PARTS FACE COVER To remove 1 Remove the setscrew q 2 Remove the face cover w To attach 3 Follow the above procedure in reverse w q...

Page 7: ...e the setscrew q 2 Remove the setscrew w 3 Move the bed cover e to the left to unlock the cover 4 Slide the bed cover to the up to remove the cover To attach 5 Follow the above procedures in reverse C...

Page 8: ...Loosen the setscrew r 6 Remove the setscrew t 7 Disengage the front cover and rear cover hooks 8 Remove the front cover y 9 Disconnect all the connectors from the circuit board A NOTE Do not disconnec...

Page 9: ...face cover bed cover and front cover Refer to pages 4 to 6 2 Remove the setscrew q 3 Remove the setscrews w 4 pcs 4 Remove the rear cover e 5 Disengage the rear cover e and thread tension hooks r To a...

Page 10: ...ick block under the presser foot and lower the presser foot lifter 3 Loosen the hexagonal socket screw Raise the presser foot lifter and tighten the setscrew firmly Attach the needle and face plate NO...

Page 11: ...emove the face cover Refer to page 4 3 Set the stitch width to 5 0 4 Make the following adjustments if the clearance between the needle drop position and the adge of the needle are even for both sides...

Page 12: ...socket screws on the lower shaft gear 5 Turn the handwheel toward you to raise the needle bar 1 7 mm from its right lowest position 6 While holding the handwheel to prevent the needle bar from moving...

Page 13: ...setscrew on the needle plate the needle plate and the bobbin holder 4 Turn the handwheel toward you until the hook point meets the right side of the needle 5 Loosen the hexagonal socket screw and mov...

Page 14: ...presser bar base plate in the direction of C when the clearance it too small Adjust the clearance betweeen the needle and hook betweeen 0 10 to 0 05 mm Tighten the setscrews The edge of presser bar ba...

Page 15: ...e plate should be 0 80 to 0 95 mm If it is not in the range adjust as follows To adjust 3 Loosen the screw A 4 Turn the handwheel to bring the feed dog to its highest position 5 If the feed dog height...

Page 16: ...A If the rotary play is too large turn the lower shaft bussing in the direction of B If the rotary play is too small turn the lower shaft bussing in the direction of C 4 Tighten the setscrew A 5 Atta...

Page 17: ...of the range adjust as follows 1 Remove the front cover Refer to page 6 2 Set the tension dial at 4 3 After threading the upper thread lower the presser foot If the top tension is too tight turn the l...

Page 18: ...f 10 pieces of the triple stitch pattern is shorter than 25 mm Turn the hexagonal socket screw in the direction of B if the total length of 10 pieces of the triple stitch pattern is longer than 27 mm...

Page 19: ...knob and pull the threader plate supporter down to remove it see FIG 1 2 To install the needle threader plate line the groove up with the pin and push it up to snap fit TO ADJUST THE THREADER PLATE PO...

Page 20: ...n Turn on the switch If any of the following problems occur take the recommended actions in the order they are shown 1 The machine does not respond when the power switch is turned on Check each connec...

Page 21: ...utton y is pressed LED displays 7 when button u is pressed When q to u are pressed LED displays b as shown LED displays 3 When the bobbin winder spindle is moved to the right buzzer sounds and LED dis...

Page 22: ...sound Stitch width or length symbol does not appear REMEDY Replace the circuit board A 06 ZIGZAG MOTOR STEP MOTOR AND FEED MOTOR LED displays 5 Turn the handwheel LED displays the top bar symbol when...

Page 23: ...is defective condition press the reverse stitch button to proceed the next step 08 SLIDE VOLUME Press the needle up down button If the result is correct condition press the MODE key to proceed the nex...

Page 24: ...d The defective part number Refer to pages 19 to 21 Steps and items section Press the reverse stitch button to return to 01 Turn the power switch off when the self diagnostic test is finished TO DISPL...

Page 25: ...G THE ELECTRONIC COMPONENTS Not applicable for this machine Printed circuit board L White Printed circuit board P Black Switching ragulator White ErP switch Red Feed motor White DC motor White Bobbin...

Page 26: ...Remove the setscrews 4 pcs and the printed circuit board A TO ATTACH 4 Follow the above procedures in reverse NOTE Do not disconnect the connectors by pulling on cord To disconnect grasp the connecto...

Page 27: ...emove the setscrew and LED cover 4 Remove the snap rings CS 2 pcs 5 Remove the printed circuit board L TO ATTACH 6 Follow the above procedures in reverse NOTE Do not disconnect the connectors by pulli...

Page 28: ...and the motor belt Tighten them with setscrews 2 pcs lightly 4 Move the motor up or down to adjust the motor belt tension The belt should deflect 7 to 9 mm when applying 300 grams force of load to the...

Page 29: ...hing regulator with cords TO ATTACH 3 Follow the above procedures in reverse Be sure to connect the connectors switching regulator connector white and ErP switch connector Red to the circuit board A R...

Search results

Summary of Contents for Elnita ec 30

Reviews:

Related manuals for Elnita ec 30

Brands by name

Popular brands

ELNA Elnita ec 30, Service Manual

Search results

Summary of Contents for Elnita ec 30

Reviews:

Related manuals for Elnita ec 30

Brands by name

Popular brands