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Brother International BAS-342G PS Instruction Manual - English - Page 82

underside of material., the thread.

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13. TROUBLESHOOTING Problem Cause Upper thread is not trimmed. Movable knife is not cutting cleanly. Remedy Replace with a new one. Reference P. 62 Fixed knife is not cutting cleanly. Sharpen the fixed knife or replace it with a new one. Movable knife is not picking up the upper thread. Adjust the position of the movable knife. Adjust the needle bar lift amount. P. 62 P. 59 P. 57 Movable knife is not picking up the upper thread because the last stitch is Refer to "Skipped stitches occur". being skipped. Movable knife position is incorrect. Adjust the position of the movable knife. Sub tension is too weak. Turn the sub tension nut to adjust the tension. Thread trimming air cylinder speed is Adjust the speed of the thread trimming too slow. air cylinder. Thread trimming air cylinder operation Advance the operation timing for the timing is too delayed. thread trimming air cylinder. Poor stitch finish on underside of material. Incorrect tightening of the upper thread. Adjust the upper thread tension. P. 72 P. 59 P. 24 P. 11 P. 35 P. 24 Upper thread trailing length is uneven. Adjust the sub tension. Incorrect tightening of the thread. Upper thread tension is too weak. Adjust the upper thread tension. P. 24 P. 24 Lower thread tension is too weak. Adjust the lower thread tension. Thread take-up spring tension and Adjust the tension and height of the height are incorrect. thread take-up spring. Position of arm thread guide R is Adjust the position of arm thread guide incorrect. R. Intermittent height of intermittent Adjust the intermittent height of the presser foot is too low. intermittent presser foot. Upper thread does not release Adjust the overlapping amount for the correctly from hook stopper. inner rotary hook and hook stopper. Feed timing is too fast. Retard the feed timing. P. 24 P. 55 P. 56 P. 32 P. 58 * Select the correct needle hole plate. * Upper thread forms the seam poorly. Smooth the thread path. Select the correct intermittent presser foot. Increase the thickness of the feed plate. Thread scraps and dust in rotary hook. Clean away the thread scraps and dust. * * * P. 53 73 BAS-342G PS

Section	Page
COVER	1
SAFETY INSTRUCTIONS	3
[1] Safety indications and their meanings	3
[2] Notes on safety	4
[3] Warning labels	6
CONTENTS	8
1. NAMES OF MAJOR PARTS	10
2. SPECIFICATIONS	11
3. TABLE PROCESSING DIAGRAM	12
4. INSTALLATION	13
4-1. Removing the machine head fixing bolts [1]	13
4-2. Installing the control box [2]	14
4-3. Installing the oil pan and support lever base	15
4-4. Installing the machine head	15
4-5. Tilting back and returning the machine head	16
4-6. Installing the gas spring	17
4-7. Installing the operation panel [3]	18
4-8. Installing the solenoid valve assembly	19
4-9. Connecting the air tubes [4]	19
4-10. Installing the air hose [5]	19
4-11. Adjusting the air pressure [6]	20
4-12. Adjusting the speed controller [7]	20
4-13. Connecting the cords [8]	21
4-14. Connecting the ground wire [9]	23
4-15. Securing the cords and air tubes [10]	24
4-16. Installing the eye guard [11]	25
4-17. Installing the cotton stand [12]	25
4-18. Lubrication [13]	26
4-19. Connecting the power cord [14]	27
4-20. Checking the safety switch [15]	27
5. PREPARATION BEFORE SEWING	28
5-1. Installing the needle	28
5-2. Operating the 2-pedal foot switch	28
5-3. Threading the upper thread	29
5-4. Winding the lower thread	31
5-5. Installing the bobbin case	32
5-6. Thread tension	33
5-6-1. Lower thread tension	33
5-6-2. Upper thread tension	33
5-7. Home position detection	34
5-8. Setting 2-step operation for the work clamp	35
6. USING THE OPERATION PANEL (BASIC OPERATIONS)	36
6-1. Name and function of each operation panel item	36
6-2. Loading sewing data	38
6-3. Setting the program number	38
6-4. Setting the X-scale and Y-scale	39
6-5. Setting the sewing speed	39
6-6. Checking the sewing pattern	40
6-7. Setting the height of the intermittent presser foot	41
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS)	42
7-1. List of advanced functions	42
7-2. Setting memory switches	43
7-3. List of memory switch settings	44
7-4. Using the lower thread counter	45
7-5. Using the production counter	46
7-6. Setting the split number	47
7-7. Using user programs	48
7-8. Using cycle programs	51
7-9. Direct selection (combination table)	53
7-10. X and Y parallel movement of sewing pattern	54
7-11. Clearing memory data (reinitialization)	55
8. USING CF CARDS	56
8-1. Notes on handling CF cards (sold separately)	56
8-2. Structure of a CF card folder	56
8-3. Data read/write mode	57
8-3-1. Reading all sewing data from the CF card at once	58
8-3-2. Writing all sewing data to the CF card at once	59
9. SEWING	60
9-1. Sewing	60
9-2. Using the STOP switch	61
9-3. Using the thread wiper switch	61
10. CLEANING	62
10-1. Cleaning the rotary hook	62
10-2. Draining the oil	62
10-3. Checking the regulator	62
10-4. Cleaning the control box air inlet ports	63
10-5. Cleaning the eye guard	63
10-6. Checking the needle	63
10-7. Lubrication	63
11. STANDARD ADJUSTMENTS	64
11-1. Adjusting the thread take-up spring	64
11-2. Adjusting arm thread guide R	65
11-3. Adjusting the needle bar height	65
11-4. Adjusting the needle bar lift amount	66
11-5. Adjusting the driver needle guard	66
11-6. Adjusting the needle clearance	67
11-7. Adjusting the inner rotary hook and hook stopper overlap	67
11-8. Adjusting the rotary hook lubrication amount	67
11-9. Adjusting the position of the movable knife	68
11-10. Replacing the movable and fixed knives	71
11-10-1. Installing the feed plate	72
11-11. Adjusting the thread wiper	72
11-12. Presser foot installation position	73
11-13. Changing the intermittent stroke	73
11-14. Adjusting the work clamp lift amount	75
11-15. Adjusting the air pressure	75
12. TABLE OF ERROR CODES	76
13. TROUBLESHOOTING	80
14. 7-SEGMENT DISPLAY	84

Match case Limit results 1 per page

13. TROUBLESHOOTING

BAS-342G PS

Problem

Cause

Remedy

Reference

Movable knife is not cutting cleanly.

Replace with a new one.

P. 62

Fixed knife is not cutting cleanly.

Sharpen the fixed knife or replace it

with a new one.

P. 62

Adjust the position of the movable

knife.

P. 59

Movable knife is not picking up the

upper thread.

Adjust the needle bar lift amount.

P. 57

Movable knife is not picking up the

upper thread because the last stitch is

being skipped.

Refer to "Skipped stitches occur".

P. 72

Movable knife position is incorrect.

Adjust the position of the movable

knife.

P. 59

Sub tension is too weak.

Turn the sub tension nut to adjust the

tension.

P. 24

Thread trimming air cylinder speed is

too slow.

Adjust the speed of the thread trimming

air cylinder.

P. 11

Upper

thread

not

trimmed.

Thread trimming air cylinder operation

timing is too delayed.

Advance the operation timing for the

thread trimming air cylinder.

P. 35

Incorrect tightening of the upper thread.

Adjust the upper thread tension.

P. 24

Poor stitch finish on

underside of material.

Upper thread trailing length is uneven.

Adjust the sub tension.

P. 24

Upper thread tension is too weak.

Adjust the upper thread tension.

P. 24

Lower thread tension is too weak.

Adjust the lower thread tension.

P. 24

Thread take-up spring tension and

height are incorrect.

Adjust the tension and height of the

thread take-up spring.

P. 55

Position of arm thread guide R is

incorrect.

Adjust the position of arm thread guide

P. 56

Intermittent

height

intermittent

presser foot is too low.

Adjust the intermittent height of the

intermittent presser foot.

P. 32

Upper

thread

does

not

release

correctly from hook stopper.

Adjust the overlapping amount for the

inner rotary hook and hook stopper.

P. 58

Feed timing is too fast.

Retard the feed timing.

Select the correct needle hole plate.

Smooth the thread path.

Select the correct intermittent presser

foot.

Upper thread forms the seam poorly.

Increase the thickness of the feed

plate.

Incorrect tightening of

the thread.

Thread scraps and dust in rotary hook.

Clean away the thread scraps and

dust.

P. 53