EverSewn CH04AX Betriebsanleitung

REPAIR MANUAL

CH04AX

Contents

1. Gauge & Tool List........................................................................................................................ 2

2. Remove machine covers....................................................................................................... 2

2-2. Remove face plate................................................................................................................................ 2

2-3. Remove Front cover ............................................................................................................................ 2

2-4. Remove Back cover............................................................................................................................. 2

2-5. Remove bed cover ............................................................................................................................... 2

3. Mechanical components adjustment........................................................................... 2

3-1. Play of the Arm shaft ........................................................................................................................... 2

3-2. Thread take up lever adjustment......................................................................................................... 2

3-3. Adjusting the needle drop position .................................................................................................... 2

3-4. Adjust height of the presser foot........................................................................................................ 2

3-5. Adjust the zigzag movement of the needle ........................................................................................ 2

3-6. Adjust needle drop positions.............................................................................................................. 2

3-7. Adjust the automatic needle threader ................................................................................................ 2

3-8. Adjust the needle bar height............................................................................................................... 2

3-9. Adjust the hook timing ........................................................................................................................ 2

3-10. Adjust the distance between needle and hook................................................................................ 2

3-12. Adjust the play for the rotary hook plates........................................................................................ 2

3-13. Adjust the height of the feed dog...................................................................................................... 2

3-14. Adjust the feed dog position............................................................................................................. 2

3-15. Adjust the upper thread tension ....................................................................................................... 2

3-16. Adjust the bobbin case tension ........................................................................................................ 2

3-17. Adjust motor belt ............................................................................................................................... 2

3-18. Super Adjust stitch balance.............................................................................................................. 2

3-19. BH BH adjustment.............................................................................................................................. 2

3-20. Bobbin winder adjustment ................................................................................................................ 2

4. Electronic Components.......................................................................................................... 2

5. Printed Circuit Board................................................................................................................ 2

5-2. HF transformer board .......................................................................................................................... 2

6-1. Trouble shooting –Main power .......................................................................................................... 2

6. Trouble shooting –Electronic parts............................................................................. 2

6-2. DC Trouble shooting - Motor............................................................................................................... 2

6-3. Trouble shooting –Stepping motor(stitch length)............................................................................. 2

6-4. Trouble shooting –Stepping motor(upper tension).......................................................................... 2

6-5. Trouble shooting –Stepping motor(thread trimmer)......................................................................... 2

6-6. Trouble shooting –Stepping motor(zigzag)....................................................................................... 2

6-7. Trouble shooting –Wi-Fi module (CH04AX) ....................................................................................... 2

6-8. Operation Panel Malfunction............................................................................................................... 2

6-9. Start/Stop button & Reverse button malfunction............................................................................... 2

6-10. Bobbin winder cannot stop............................................................................................................... 2

6-11. Buttonhole Sewing Failure................................................................................................................ 2

6-12. Foot Controller Failure....................................................................................................................... 2

6-13. LED Light Failure ............................................................................................................................... 2

6-14. Organize the cables ........................................................................................................................... 2

7. Embroidery Unit............................................................................................................................ 2

7-1. Main parts of the embroidery unit....................................................................................................... 2

7-2. Dissemble the embroidery unit........................................................................................................... 2

7-3. Mechanical adjustment for the embroidery unit. ............................................................................... 2

7-4. PCB Layout for the embroidery unit................................................................................................... 2

8. Quick Repair Reference.......................................................................................................... 2

1. Gauge & Tool List

Gauge Appearance

ZH SAP#

Item Description

Spec.

Purpose

031CAA0044

Needle bar height

gauge

29.05mm

For needle bar

height

adjustment (see

page 16)

031CAA0013

Hook timing gauge

3.5mm

For adjusting

the hook timing

(see page 18)

031CAA0014

Hook timing gauge

holder

For adjusting

the hook timing

(see page 18)

031CAA0010

Feed dog gauge

0.9~1.05mm

For adjusting

the height of

feed dog (see

page 25)

031V8D0301

Presser bar Gauge

6.0~6.5mm

For adjusting

the height of

presser foot

(see page 10)

031CAA0012

Zigzag movement

gauge

6.0~6.2mm

Checking the

zigzag

movement of

the needle (see

page10)

031CAA0042

Rotary hook plate

(1) gauge

0.3~0.5mm

Check the play

allowance for

the rotary hook

plate (1) (see

page 22)

031CAA0043

Rotary hook plate

(2) gauge

0.6~1.0mm

Check the play

allowance for

the rotary hook

plate (2) (see

page 23)

Tool Type

Head Type

Item Description

Specs

Remark

Hexagon

screwdriver

1.5mm

Hexagon

screwdriver

2.0mm

Hexagon

screwdriver

2.5mm

Hexagon

screwdriver

3.0mm

Hexagon

screwdriver

4.0mm

L-shape slotted

screwdriver (twin

heads)

2. Remove machine covers

2-1. Remove accessory box

2-1-1.

Grasp the accessory box then pull toward by the

arrow direction to remove it.

2-2. Remove face plate

2-2-1

Use Philips head screwdriver to remove the setscrews of the

face plate, free arm cover, free arm base cover and bed cover.

2-3. Remove Front cover

2-3-1

Use Philips screwdriver to remove the front cover

2-3-2

Remove the harness &WIFI module cable

2-4. Remove Back cover

2-4-1

Use Philips screwdriver to remove the back cover (Please

lower the presser foot lever first)

2-4-2

When removing the back cover, please pay attention to avoid

hitting the receptacle holder and break it.

2-5. Remove bed cover

2-5-1

Use Philips screwdriver to remove the bed cover

3. Mechanical components adjustment

①

②

③

④

⑤

⑥

⑦

⑧

3-1. Play of the Arm shaft

(※Please remove face plate, free arm cover, free arm base

cover, base cover, front cover in advance)

Use 2.5mm hexagon screwdriver to loosen 2 setscrews on arm

shaft collar (as shown in area ⑤).

3-1-2

Follow the arrow direction to pull the hand wheel

outward.

3-1-3

Pull arm shaft collar to left (as shown in area ⑤) and fit tightly

against the arm shaft bushing. Then tighten 2 setscrews on

the arm shaft collar

3-1-5

Follow 3-1-2 to pull the hand wheel outward and turn the

hand wheel to move the needle to three different positions

(highest, lowest, center). Then check if the play of the arm

shaft is sufficient.

3-1-4

Check if the arm shaft can rotate smoothly. If not, the arm

shaft collar may fit too tightly against the arm shaft bushing.

3-1-6

If the play of arm shaft is still too loose or too tight, follow the

above procedures (3-1-1～3-1-5) to re-adjust.

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