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Brother International BAS-311E Network Users Manual - English - Page 86

Contact failure, Feed mechanism, Work clamp lifter and thread trimmer mechanisms

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Chapter 6 Power supply and electrical parts adjustment s Contact failure • The connectors functions are divided into four categories. Some connectors may belong to more than one group. Be sure to investigate another category if a problem is not found in one category. • Ffor the details of connections, refer to the control circuit block diagram at the end of this manual. 1. Feed mechanism Problem • Home position is not properly detected. • Error [E.A1] appears. Connector No. and position Main PCB • Forward feed does not operate correctly. • Error [E.A1] appears. X home position sensor Y home position sensor Main PCB • Sideways feed does not operate correctly. • Error [E.A1] appears. Y pulse motor Main PCB 2. Work clamp lifter and thread trimmer mechanisms • The work clamp does not operate. • The machine does not operate. • The work clamp does not operate. BAS-311E (Solenoid type) • Thread trimming is not performed. • Thread wiper does not operate. • The work clamp does not oeprate. X pulse motor Main PCB Control box Foot switch Main PCB Wiper solenoid Thread trimming solenoid Sewing clamp solenoid Presser foot solenoid 78 BAS-311E.311EL.326E.326EL

Section	Page
Go to Service Manual Top Page	1
Chapter 1. Mechanical description	9
1. Needle bar, thread take-up, lower shaft and shuttle hook mechanism	9
2. Work clamp lifting mechanism (1) (Solenoid type), 311E	10
3. Feed mechanism (X axis) 311E, 311EL, 326E, 326EL	12
4. Presser foot mechanism (1)	14
5. Thread trimmer mechanism	16
6. Thread nipper (1) when presser foot rises	17
7. Thread wiper (1) (vertical wiper: standard)	18
Chapter 2. Disassembly	19
1. Covers (1) 311E	19
2. Feed mechanism	21
3. Presser foot mechanism	22
4. Needle bar mechanism	23
5. Upper shaft mechanism	24
6. Feed mechanism (Y axis) (1) 311E and 311EL	25
7. Feed mechanism (X axis) (1) 311E	28
8. Lower shaft mechanism	30
9. Work clamp lifter (Solenoid type)	31
10. Thread nipper mechanism	32
11. Thread trimmer mechanism	33
Chapter 3. Assembly	34
1. Thread trimmer mechanism (1)	34
2. Thread nipper mechanism	35
3. Work clamp lifter mechanism	37
4. Feed mechanism (X axis) 311E	39
5. Feed mechanism (Y axis) 311E and 311EL	43
6. Upper shaft mechanism	47
7. Needle bar mechanism	48
8. Presser foot mechanism	49
9. Lower shaft mechanism (1)	51
10. Lower shaft (Rotary hook) (2)	52
11. Thread trimmer mechanism	53
12. Feed guide mechanism (Home position adjustment: X ) 311E, 311EL, and 326E	54
13. Covers 311E	57
Chapter 4. Adjustments	59
1. Adjusting the needle bar height adjustment	59
2. Adjusting the needle bar lift amount	59
3. Adjusting the needle clearance	60
4. Adjusting the driver needle guard	60
5. Adjusting the shuttle race thread guide	60
6. Adjusting the two-step work clamp lift amount	61
7. Adjusting the movable knife	63
8. Adjusting the lowest point of the presser foot	66
9. Changing the presser foot lift	67
10. Wiper adjustment	68
11. Adjusting the home position	69
12. Adjusting the tension of the timing belt	72
13. Adjusting backlashes	74
14. Adjusting the driving lever stopper position	75
15. Adjusting the thread trimmer driving lever position	75
16. Work clamp lift components for manual operation (Solenoid type)	76
17. Adjusting the presser foot height	76
18. Adjusting the needle up stop position	77
Chapter 5. How to make up the work clamp	78
1. How to make up clamping type work clamp	78
2. How to make up cassette type work clamp	79
Chapter 6 Power supply and electrical parts adjustment	81
1. Precautions at the time of adjustment	81
2. Components inside the control box	81
3. Fuse explanation	82
4. Connectors	83
5. DIP switches	90
6. Changing special functions using the memory switches	94
7. Checking the input sensor and DIP switch input	98
8. Checking the input voltage	99
9. Clearing all memory settings	99
10. Confirming software version	100
11. Error codes	101
Chapter 7. Trouble shooting	103
Flowchart	103
Problem solution and measures	109
Chapter 8. 1. Gauge parts list according to subclasses	120
Chapter 9. Gauge parts list	121
Chapter 10. Option parts	131