8. ELECTRICAL MECHANISM

 

 

 

 

 

 

 

 

 

 

 

 

 

Problem #21 Thread is not trimmed.

 

 

 

 

 

 

 

 

 

 

 

 

Cause

 

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

 

1.

Incorrect mechanism adjustment

 

Adjust the thread trimming mechanism while

 

 

 

 

 

refer to “7-17. Adjusting the thread trimming cam

 

 

 

 

 

position”.

 

 

 

 

 

(If it is clear that the thread trimming mechanism

 

 

 

 

 

is not operating, carry out inspections 2. and 3.

 

 

 

 

 

below.)

 

 

2.

Poor connector contact

 

Check that connector P1 (MAIN) is inserted into

 

 

 

 

 

the PMD P.C. board.

 

 

3. Malfunction of thread trimming

 

Disconnect connector P6 (SOL1) from the PMD

Thread trimming solenoid

 

 

solenoid

 

P.C. board, and measure the resistance between

 

 

 

 

 

pins 3-6 of the cord-side connector.

 

 

 

 

 

OK if 6 8

 

 

 

4889Q

 

 

 

 

 

 

 

 

 

 

4. Malfunction of tension release

 

Disconnect connector P7 (SOL2) from the PMD

Tension release solenoid/

 

 

solenoid/digital tension

 

P.C. board, and measure the resistance between

digital tension solenoid

 

 

 

 

pins 1-2 of the cord-side connector.

 

 

 

 

 

OK if 6 8

 

 

 

4890Q

 

 

 

 

 

 

 

 

 

 

 

 

5.

Malfunction of PMD P.C. board

 

1)

With connector P6 (SOL1) connected to the

PMD P.C. board

 

 

 

 

 

PMD P.C. board, turn on the power and carry

 

 

 

 

 

 

out sewing, and measure the voltage

 

 

 

 

 

 

between pins 3-6 of connector P6 (SOL1).

 

 

 

 

 

 

OK if voltage is output momentarily at the

 

 

 

 

 

 

sewing end.

 

 

 

 

 

2)

With connector P7 (SOL2) connected to the

 

 

 

 

 

 

PMD P.C. board, turn on the power and carry

 

 

 

 

 

 

out sewing, and measure the voltage

 

 

 

 

 

 

between pins 1-2 of connector P7 (SOL2).

 

 

 

 

 

 

OK if voltage is output momentarily at the

 

 

 

 

 

 

sewing end.

 

 

 

4891Q

 

 

 

 

 

 

 

 

 

 

 

BAS-311G, BAS-326G

135

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Brother BAS-311G service manual 135

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.

The BAS-311G also boasts an advanced automatic needle positioning system, allowing users to set the needle to stop in the up or down position. This functionality enhances control over the sewing process, making it easier to pivot and maneuver fabric, which is crucial for intricate designs and patterns. This precision is a boon for manufacturers looking to improve the quality of their finished products.

Another notable aspect of the BAS-311G is its versatility. The machine is equipped with an adjustable stitch length feature, enabling users to customize stitches according to specific project needs. This flexibility allows for the production of a wide range of garments, from delicate fabrics to thicker materials, making it suitable for various industries including fashion, sportswear, and workwear.

In terms of technology, the BAS-311G incorporates Brother's pioneering technology that ensures smooth and reliable operation. The machine includes a digital control panel, which simplifies the selection of stitch patterns and settings. Users can easily navigate through options, making adjustments on the fly, which is crucial in a fast-paced production environment.

Built with durability in mind, the BAS-311G is engineered for heavy-duty use with high-quality materials that withstand the rigors of daily operation. Its robust construction ensures longevity and sustained performance, making it a wise investment for businesses seeking reliable machinery.

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.