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

 

3.

Malfunction of power cord

Disconnect connector P9 (ACIN) on the power

 

 

 

 

supply motor P.C. board from the circuit board,

 

 

 

 

turn on the power, and then measure the voltage

 

 

 

 

between pins 3-4 of the cord-side connector.

 

 

 

 

 

OK if same as wall outlet voltage

 

 

 

 

 

 

 

After inspecting, turn off the power and insert

 

 

 

 

connector P9.

 

 

 

 

 

 

 

 

 

4880Q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4. Blown fuse

Remove fuses

F7 and

F8 and

check

the

Glass tube fuse

 

 

 

continuity.

 

 

 

 

 

 

15A-250V

 

 

 

OK if continuity

 

 

 

 

 

 

 

 

 

 

(If there is no continuity, replace the fuse and

 

 

 

 

then carry out the inspections in 5. )

 

 

 

 

 

5. Malfunction of power supply

Disconnect connector P17

 

(M-MOTOR) of the

Power supply motor P.C.

 

 

motor P.C. board

main P.C. board, turn on the power, and then

board

 

 

 

measure the voltages between the pins at the

 

 

 

 

cord-side connector.

 

 

 

 

 

 

 

 

 

OK if the voltages are as shown in the table

 

 

 

 

below.

 

 

 

 

 

 

 

 

 

 

 

Pin Nos.

 

Normal

 

 

 

 

 

 

 

+ side

side

 

voltage

 

 

 

 

 

 

 

1

3

 

+5V

 

 

 

 

 

 

 

2

4

 

+5V

 

 

 

 

 

 

 

6

5

 

+24V

 

 

 

 

 

 

 

7

5

 

+24V

 

 

 

 

 

 

After measuring, turn off the power, wait 5

 

 

 

 

minutes or more and then insert P14.

 

 

 

 

 

 

5085Q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.

Malfunction of main P.C. board

With connector

P17 (M-MOTOR) inserted

into

Main P.C. board

 

 

 

the main P.C. board, turn on the power and then

 

 

 

 

measure the voltages between the pins at the

 

 

 

 

cord-side connector.

 

 

 

 

 

 

 

 

 

OK if the voltages are as shown in the table

 

 

 

 

below.

 

 

 

 

 

 

 

 

 

 

 

Pin Nos.

 

Normal

 

 

 

 

 

 

 

+ side

side

 

voltage

 

 

 

 

 

 

 

1

3

 

+5V

 

 

 

 

 

 

 

2

4

 

+5V

 

 

 

 

 

 

 

6

5

 

+24V

 

 

 

 

 

 

 

7

5

 

+24V

 

 

 

 

 

 

After measuring, turn off the power.

 

 

 

 

 

 

5085Q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.

Malfunction of panel P.C. board

Check that connector P1

(PANEL)

is inserted

Panel P.C. board

 

 

 

into the main P.C. board,

 

and that

connector

Panel harness

 

 

 

CN2 (MAIN) is inserted into the panel P.C.

 

 

 

 

board.

 

 

 

 

 

 

 

BAS-311G, BAS-326G

125

Page 132
Image 132
Brother BAS-311G service manual 125, Panel

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.