Singer One Plus Manuale utente

Page 1/41

Original issue

Oct.2012

Service Manual

One Plus

Model

Original issue: Oct.2012

MODEL One Plus

Page 2/41

Original issue

Oct.2012

Service Manual

One Plus

Model

INDEX

1. Disassembling of covers

2. Test mode

3. Adjustment of feed dog height

4. Needle bar height

5. Needle threader height

6. Presser foot height and direction

7. Needle position at zigzag stitching

8. Clearance between needle and shuttle

9. Needle timing to feed dog

10. Needle timing to shuttle hook

11. Adjustment of take-up lever timing to needle

12. Adjustment of meshing position of gears for thread take-up

lever

13. Adjustment of thread tension

14. Tension of timing belt

15. Motor belt tension

16. Retaining bracket for bobbin case

17. Origin point positioning of zigzag bight

18. Stitch length

19. Needle stop at highest position

20. Electronic component area

*ACPowerboard

*CPU board-1

*Switch board-1

21. Wiring diagram

Page 3/41

Original issue

Oct.2012

Service Manual

One Plus

Model

1. Disassembling of covers

(1) Face cover side

Remove screw A.

Remove screw Ｂ.

Page 4/41

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Service Manual

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Model

1. Disassembling of covers –continued--

(2) Bottom side

Remove a screw on front cover.

Remove a screw inside of access

hole of front cover.

Don’t remove screws above and

below the access hole

Remove cap for fine adjustment on assembly.

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Original issue

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Service Manual

One Plus

Model

1. Disassembling of covers –continued--

(3) Back cover side

Remove two self-tapping screws.

Remove two self-tapping screws

Remove self-tapping screw.

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Original issue

Oct.2012

Service Manual

One Plus

Model

1. Disassembling of covers –continued--

(4) Front cover side

Loosen screw A.

Page 7/41

Original issue

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Service Manual

One Plus

Model

1. Disassembling of covers –continued--

Open back and front covers.

Push up front cover to open by inserting

small screw driver between front and

back covers.

Open mating portion of front and back

covers by pushing back cover with small

screw driver.

Open

front cover with

smallscrewdriver.

Remove front cover.

Page 8/41

Original issue

Oct.2012

Service Manual

One Plus

Model

2. Test mode with warning function deactivated

This test mode is used to operate machine without threading, while sensors for

thread breakage, presser foot lever and bobbin thread are deactivated.

1. While pushing three switch buttons 1, 3 & 5 at control panel at the same time,

turn on sewing machine.

２．Release three switch buttons after beep sound is heard.

Machine runs with any desired button selected by using foot control.

1 3 5

Page 9/41

Original issue

Oct.2012

Service Manual

One Plus

Model

2. Test mode -- continued --

1. Push bobbin winder to the right

2. Push and hold reverse switch

in place.

3. Turn on power switch.

4. Release bobbin winder while

pushing reverse switch, just after

power switch is turned on.

Note: See next page

Page 10/41

Original issue

Oct.2012

Service Manual

One Plus

Model

2. Test mode -- continued --

Release bobbin winder by the time when LED is lit at extreme right line.

After entering test mode, the machine beeps and LED turns off.

Test mode

*Test mode 1 (Button ①)

Maximum zigzag width at 7 mm

No feed

*Test mode 2 (Button ②)

2.4 mm feed

Needle in the center position

*Test mode 3 (Button ③)

For aging (shaking down)

Zigzag width at 7 mm

2.4 mm feed forward and backward

Note: use foot controller for running

machine.

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