ELNA E9020, Service Manual

Page: 3 / 56

1
[1] Product specifications for E9020
(1) Speed control device
™ Slide control system (soft start) and optional controller system
™
Straight stitching ................................................. 115 to 850 rpm
™ Bobbin winding ..................................................... Up to 600 rpm
™ Zigzag pattern ......................................................Up to 700 rpm
™
Bartacking on both sides of buttonholes .............. Up to 525 rpm
™ Large pattern sewing, making key
hole buttonholes, lateral feed pattern sewing ...... Up to 300 rpm
™ Embroidering At high speed .................. 410 to 800 rpm
At medium speed .............. Up to 410 rpm
At low speed ...................... Up to 245 rpm
The maximum speed can be set in four stages according to the position of the
slide variable resistor. (800, 750, 600 and 410 rpm)
[In case of embroidering, the sewing speed (rpm) changes over according to the
travel anount of embroidering device STM (two : X and Y), and at medium speed
and low speed, the sewing speed is fixed regardless of the slide controller.]
™ Soft start ................... 115 rpm for approximately 1 second
(2) General mechanism
1. Thread take-up lever ............... One-touch utility thread eyelet link thread take-
up lever
2. Hook........................................ Vertical-axis, full rotary hook. The inner hook
is equipped with an idling prevention device.
3. Drop feed ................................ Slide lever type
4. Lighting ................................... Built in the face plate cover and in the center of
main body.
Lamp ... Halogen lamp
5. Needle thread spool rest rod .. Horizontal type
6. Bobbin winder ......................... Slide-type bobbin winder shaft Starts and stops
using the start switch and the stop switch.
7. Needle thread eyelet ............... One-touch utility thread eyelet
8. Presser foot ............................. Exclusive transparent presser foot Exclusive
presser foot is denoted by the square frame .
9. Power switch ........................... Exclusive to the power to the main unit
10. Lubrication .............................. No lubrication is required under the general
operating conditions.
11. Power cord .............................. The power cord is 1.9 m long from the red mark.
(3) Needle throwing mechanism
1. Needle bar rocking system ..... Pe Circular arc
2. Straight stitching ..................... Center stitch base line and right stitch base line
3. Zigzag width ............................ 7 mm
4. Zigzag width adjustment ......... In increments of approximately 0.3 (0.333) of
0, 0.3, 0.6, 1.0, 1.3, 1.6, 2.0, 2.3, 2.6, 3, 3.3,
3.6, 4.0, 4.3, 4.6, 5, 5.3, 5.6, 6.0, 6.3, 6.6 and 7
5. Needle throwing motion .......... By a stepping motor
actuating method