8. ELECTRICAL MECHANISM

Problem #1 The power indicator does not illuminate when the power is turned on.

Cause

 

 

Inspection/Remedy/Adjustment

 

 

Replacement if a malfunction

1. Malfunction of voltage select

a.

Check if there is a broken wire in the voltage

Voltage select harness ***

harness ***

 

select harness.

 

 

 

 

(*** indicates voltage

 

b.

Disconnect the connector at the transformer

specifications)

For 200 V specifications

 

side, turn on the power and then measure the

 

 

 

voltage at the cord.

 

 

 

 

 

 

 

(The wiring position may vary depending on

 

 

 

the voltage specifications.)

 

 

 

 

 

OK if same as wall outlet voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage

 

Pin No.

 

 

 

 

 

 

specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100V

 

6-8

 

 

 

 

 

 

110V

 

5-8

 

 

 

 

 

 

120V

 

4-8

 

 

 

 

 

 

200V

 

3-8

 

 

 

 

 

 

220V

 

2-8

 

 

 

 

 

 

240V

 

2-7

 

 

 

 

 

 

H220V

 

3-6

 

 

 

 

 

 

380V

 

2-3

 

 

 

 

 

 

400V

 

1-3

 

 

 

4876Q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Malfunction of transformer

For 100V, 200V, 220 V specifications

 

 

Transformer

100V, 200V, 220 V specifications

 

1)

OK if there is

continuity between

pins

 

 

 

1-8, 2-8, 3-8,

4-8, 5-8 and 6-8 of the

 

 

 

 

8-pin connector coming out from the

 

 

 

 

transformer. [Fig. A]

 

 

 

 

 

2)

OK if there is

continuity between

pins

 

 

 

 

1-2, 3-4 and 5-6 of the 6-pin connector

 

 

 

 

coming out from the transformer.

 

 

 

 

 

 

[Fig. C]

 

 

 

 

 

 

 

3)

OK if there is

continuity between

pins

 

 

 

 

1-2 and 4-5 of the 5-pin connector

 

4877Q

 

 

coming out from the transformer.

 

 

 

 

 

[Fig. D]

 

 

 

 

 

380V, 400V specifications

 

 

 

 

 

 

 

For 380V, 400V specifications

 

 

 

 

 

1)

OK if there is

continuity between

pins

 

 

 

 

1-3, 2-3 and 3-6 of the 6-pin connector

 

 

 

 

coming out from the transformer.

 

 

 

 

 

 

[Fig. B]

 

 

 

 

 

 

 

2)

OK if there is

continuity between

pins

 

 

 

 

1-2, 3-4 and 5-6 of the 6-pin connector

 

 

 

 

coming out from the transformer.

 

 

 

 

 

 

[Fig. C]

 

 

 

 

 

4878Q

 

3)

OK if there is

continuity between

pins

 

 

 

1-2 and 4-5 of the 5-pin connector

 

 

 

 

 

 

 

 

coming out from the transformer.

 

 

 

 

 

 

[Fig. D]

 

 

 

 

 

4879Q

124

BAS-311G, BAS-326G

Page 131
Image 131
Brother BAS-311G service manual 124, Fig. C OK if there is Continuity between

BAS-311G specifications

The Brother BAS-311G is a state-of-the-art industrial sewing machine designed specifically for advanced garment manufacturing. This high-speed, fully automated model is engineered to meet the demands of modern production environments, offering exceptional performance and versatility.

One of the key features of the BAS-311G is its automatic thread trimmer, which significantly reduces downtime and enhances productivity. This machine is capable of cutting the thread at the end of each seam, ensuring a clean finish and minimizing the need for manual intervention. This feature is especially beneficial in high-volume production settings where efficiency is paramount.

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In summary, the Brother BAS-311G is an excellent choice for manufacturers looking to enhance their sewing operations. With features such as automatic thread trimming, adjustable stitch lengths, and advanced technology integration, it stands out as a top-tier industrial sewing machine designed to improve efficiency and quality in garment production.