Equipment information

Brother LK3-B431E Sewing machine
Manufacturer
Brother
Model LK3-B431E
Date
Category: Home electronics
Group Sewing machine
Description
Information
                                    

These manuals are available for the above equipment:

Brother -- LK3-B431E -- Service Manual
File name Brother-6576-Manual-Page-1-Picture
Manual Type Service Manual
Pages 45
Size 1.94 Mbytes (2030097 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
Upload date
MD5 51641c9fdc63c525a70c65c8196b5532
Downloads 321 since 07 March 2015
Uploaded by: Luiz Alan Alexandre
Information
1.	NAME OF EACH PART
.................................................................
1

2.	SPECIFICATIONS
.......................................................................
2

2-1. Specifications
........................................................................
2

2-2. Program list
..........................................................................
3

2-3.	Optional parts
........................................................................
4

3.	INSTALLATION
........................................................................
5

3-1.	Power table
..........................................................................
5

3-2.	Installing the motor
...................................................................
6

3-3.	Installing the motor pulley
.......................................... .................. 6

3-4.	Installing the control box
.............................................................. 7

3-5.	Installing the rubber cushions
.......................................................... 8

3-6.	Installing the oil pan
..................................................................
8

3-7.	Installing the cushions
.................................................................
8

3-8.	Installing the machine head
............................................................ 9

3-9.	Installing the head rest
................................................................
9

3-10.	Installing the liquid cooling tank, optional
.............................................. 9

3-11.	Connecting the cords
.................................................................
10

3-12.	Installing the V-belt
..................................................................
11

3-13.	Installing the belt cover
..............................................................
11

3-14.	Installing the foot switch
............................................................. 12

3-15.	Installing the motor cover
............................................................ 12

3-16.	Installing the spool stand
............................................................. 12

3-17.	Installing the handy switch, optional
................................................... 13

4.	LUBRICATION
........................................................................
14

4-1.	Lubrication points
...................................................................
14

5.	OPERATION
..........................................................................
15

5-1.	Name and function of each operation panel item
....................................... 15

5-2. Operating procedure
.................................................................
16

6.	CHECKING THE SEWING PATTERN
................................................... 17

7.	CORRECT
USE..................................................................................................................................................18

7-1. Selecting the needle and thread
..............................................................................................................18

7-2. Installing the needle
..................................................................................................................................18

7-3. Threading the upper thread
....................................................................................................................18

7-4. Winding the lower thread
........................................................................................................................19

7-5. Replacing the bobbin case and threading the thread
........................................................................20

7-6. Thread tension reference guide
..............................................................................................................20

7-6-1.	Lower thread tension
........................................................................................................................21

7-6-2.	Upper thread tension
........................................................................................................................21

7-6-3.	Thread takeup spring height
..........................................................................................................21

7-6-4.	Thread takeup spring tension
........................................................................................................21
8.	SEWING
..............................................................................................................................................................22

9.	MAINTENANCE AND INSPECTION
......................................................................................................23

9-1. Cleaning the rotary hook
..........................................................................................................................23

9-2. Lubrication
....................................................................................................................................................23

9-3. Draining the oil
............................................................................................................................................24

9-4. Cleaning the control box air inlet port
..................................................................................................24

9-5. Cleaning the eye guard
..............................................................................................................................24

9-6.	Checking the needle
..................................................................................................................................24

10.	STANDARD ADJUSTMENTS
....................................................................................................................25

10-1.	Adjusting the needle bar height
..............................................................................................................25

10-2. Adjusting the needle bar lift amount
....................................................................................................25

10-3. Adjusting the driver needle guard
..........................................................................................................26

10-4. Adjusting the needle clearance
................................................................................................................26

10-5. Adjusting the shuttle race thread guide
................................................................................................26

10-6. Adjusting the movable knife
....................................................................................................................27

10-7. Adjusting the work clamp lift amount
..................................................................................................28

10-8. Adjusting the thread wiper
......................................................................................................................29

10-9. Adjusting the needle up stop position
..................................................................................................30

10-10. Checking the input sensors
......................................................................................................................30

10-11. Checking the input voltage
......................................................................................................................30

10-12.	Moving stitch patterns
..............................................................................................................................31

11.	CHANGING FUNCTIONS USING THE DIP SWITCHES
..................................................................32

11-1.	Operation panel DIP switches
..................................................................................................................32

11-2. Setting the presser mode
..........................................................................................................................32

11-3. DIP switches inside the control box
........................................................................................................33

11-4. Using user programs
..................................................................................................................................34

•	Recording a user program
..................................................................................................................34

•	Using a user program
........................................................................................................................35

•	Clearing the user programs
..............................................................................................................35

12.	CHANGING SPECIAL FUNCTIONS USING THE MEMORY SWITCHES
................................36

13.	LIST OF ERROR CODES
..............................................................................................................................37

14.	GAUGE PARTS LIST ACCORDING TO
SUBCLASSES............................ ............38

15.	TROUBLESHOOTING
..................................................................................................................................41
Brother-6576-Manual-Page-1-Picture
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