8. ELECTRICAL MECHANISM

Problem

#9

When the foot switch is depressed, an error code is displayed.

 

 

 

 

 

 

 

 

 

 

 

Cause

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

3. If the work clamp moves slightly

1)

Check that connector P5 (P-ENC) is inserted

Pulse motor P assembly

 

and then [E300] is displayed,

 

into the main P.C. board.

 

 

there is a malfunction of the

2)

Check the encoder input while referring to

 

 

encoder.

 

 

“2-8. Input checking method”.

 

4.

If the work clamp operates and

1)

Check that connector P8 (SENSOR1) is

Work clamp home position

 

[E300] is displayed, there is a

 

inserted into the main P.C. board.

sensor

 

malfunction of the work clamp

2)

Check the work clamp home position sensor

 

 

home position sensor.

 

input while referring to “2-8. Input checking

 

 

 

 

 

 

method”.

 

 

 

 

 

3)

If a metallic object is brought close to the

 

 

 

 

 

 

work clamp home position sensor and the

 

 

 

 

 

 

LED inside the sensor does not illuminate,

 

 

 

 

 

 

there is a malfunction of the sensor.

 

 

 

 

 

4)

If it illuminates, the home position dog is

 

 

 

 

 

 

incorrectly adjusted.

 

 

 

 

 

 

Switch to home position adjustment mode,

 

 

 

 

 

 

and adjust the position of the home position

 

 

 

 

 

 

dog. (Refer to “7-20. Adjusting the home

 

 

 

 

 

 

position”.)

 

5. If the work clamp does not move

1)

Disconnect connector P3 (PPM) from the

Pulse motor P assembly

 

and [E300] is displayed, there is

 

PMD P.C. board, and measure the resistance

 

 

a malfunction of the pulse motor

 

between pins 1-2 and 3-4 at the cord-side

 

 

or cord.

 

 

connector.

 

 

 

 

 

 

OK if 2-3

 

 

 

 

 

 

After measuring, insert P3.

PMD P.C. board

 

 

 

 

2)

If 1) is OK, there is a malfunction of the PMD

 

 

 

 

 

P.C. board.

 

 

 

 

4888Q

 

 

 

 

 

 

 

 

 

 

 

 

Problem

#10

CF media indicator does not illuminate.

 

 

 

 

 

 

 

 

 

 

 

Cause

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

1.

Incorrectly inserted

1)

Check the insertion direction of the CF card.

 

 

 

 

 

 

(The side with the projection should be at the

 

 

 

 

 

 

left.)

 

 

 

 

 

2)

Check the insertion of the CF card.

 

2.

CF card incorrectly formatted.

Check the format of the CF card.

 

 

 

 

 

(Use 16-sector formatting.)

 

3.

Malfunction of CF card

Use a computer to check whether the contents of

 

 

 

 

 

the CF card can be read.

 

 

 

 

 

 

Problem

#11

Work clamp does not rise.

 

 

 

 

 

 

 

 

 

 

 

 

Cause

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

1. Incorrect

work clamp home

Adjust the home position while referring to “7-20.

 

 

position adjustment

Adjusting the home position”.

 

2.

Incorrect mechanism adjustment

Check if the movement of the work clamp arm is

Work clamp arm assembly

 

 

 

 

stiff.

 

130

BAS-311G, BAS-326G

Page 137
Image 137
Brother BAS-311G service manual 130

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.

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