Brother BAS-761 Service Manual Page 81
- Page / 179
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
6. ELECTRIC COMPONENTS
BAS-7610
6-07
6-5. Connector
6-5-1. Main PCB
The figure is a part code S51862 - PCB.
No. Connection No. Connection
P1 Machine sensor P17 Foot switch
P2 Stacker motor P18 Start switch
P3 Thread trimmer solenoid P19 Clamp-in sensor
P4 Power supply PCB P20 Home position, over travel sensor
P5 Folding clamp valve P21 2 row sensor
P6 Machine valve P22 Jig pattern sensor
P7 Floppy disk drive (data) P23 Work clamp cylinder sensor
P8 Floppy disk drive (power supply) P24 Not use (For BAS - 370E series)
P9 Programmer P25* Expansion bus control signal output
P10 Operation panel P26* Main CPU expansion input
P11 Servo amplifier (machine) P27* Main CPU expansion output
P12 Servo amplifier (Y) P28* Folding clamp CPU expansion input
P13 Servo amplifier (X) P29* Folding clamp CPU expansion output
P14 Air switch P30 Not use (For BAS - 370E series)
P15 Folding clamp cylinder sensor P31* Expansion solenoid output
P16 Switch box P32* Expansion pulse motor output
* As for the part code S46658 - PCB, connector No. differs as follows.
P25→P24, P26→P25, P27→P26, P28→P27, P29→P28, P31→P29, P32→P30
P1 [HEAD-SENS] (JAPAN SOLDERLESS TERMINAL B15B-XH-A)
Pin No. Signal name Probable symptoms due to poor contact
1+12V
2 Thread breakage input
3
±0V
“E - 520” appears without thread breakage.
4+5V
5 Needle up sensor input
6
“E - 550” appears. Machine does not stop in needle up position.
7+5V
8 Synchronizing sensor input
9
Machine does not trim thread. Feed mechanism does not move.
Timing of thread trimming is abnormal.
“E - 540” appears.
10 +5V
11 Presser foot sensor input
12
±0V
“E - 560” appears.
13 +5V
14 Zigzag sensor input
15
±0V
“E - 580” appears.
1771S
- SAFETY INSTRUCTIONS 2
- CAUTION 3
- 3. Warning labels 5
- 1-3. Needle zigzag mechanism 10
- 1-4. Lubrication mechanism 12
- 1-5. Thread trimmer 14
- 1-6. Presser bar lifter 16
- 1-7. Stacker 16
- 1-8. Feed guide mechanism 17
- 1-9. Folding mechanism 18
- 1. MECHANICAL DESCRIPTIONS 19
- 1-11. Bobbin winder mechanism 20
- 2-1. Basic operation 21
- <Starting> 22
- <Removing stacker> 23
- <Removing folding base> 24
- 3. DISASSEMBLY 25
- 3-2. Presser foot mechanism 26
- 3-5. Needle bar 28
- 3-6. Motor 29
- 3-7. Timing belt 29
- 3-8. Auxiliary shaft 30
- 3-9. Zigzag 31
- 4. ASSEMBLY 33
- 4-2. Auxiliary shaft 34
- 4-3. Timing belt 34
- 4-4. Motor 35
- 4-5. Needle bar 36
- 4-8. Presser foot mechanism 38
- 4-9. Cover 39
- 5. ADJUSTMENT 41
- X2.4 rotary hook : 2.4 mm 46
- X1.7 rotary hook : 1.8 mm 46
- X2.4 rotary hook : 1.2 mm 46
- 5-4. Tension release 49
- 5-5. Thread tension 49
- <Thread guide, R> 50
- <Fixed knife> 51
- <Needle> 51
- 5-11-1. Folding clamp 56
- 5-11-2. Inner clamp 56
- 5-11-3. Center blade 56
- 5-11-4. Sewing clamp 57
- 5-11-9. Stacker wiper 59
- 5-11-10.Stacker bar inside 59
- 5-11-11. Stacker bar outside 59
- 5-11-12. Stacker roller 60
- 5-30-2. Setting of MODE 73
- <Operation panel> 76
- <Programmer> 76
- 6-3. Power supply 77
- 6-4. PROM 80
- 6-5. Connector 81
- P3 [TRIM] (MOLEX 5273-02A) 82
- P4 [POWER] (MOLEX 5566-10A) 82
- P7 [FDD] (3 M 3431-6002SCFL) 84
- P23 [CLAMP] (MOLEX 5045-03A) 88
- 6-5-2. Power supply PCB 91
- P1 [MAIN] (MOLEX 5277- 04A) 91
- P4 [AC-IN] (MOLEX 5277 - 06A) 91
- 6-5-3. Operation panel PCB 92
- 6-5-4. Programmer PCB 94
- P2 [MAIN] (MOLEX 5268-12A) 94
- 6-5-5. Pattern sensor PCB 95
- 6-6. Sensor 96
- 6-6-2. Function of sensor 97
- < Jig pattern sensor > 99
- < Cylinder sensor > 100
- < Clamp-in sensor > 101
- BAS-7610 102
- 6-7. Harness 103
- 6-8. Servo amplifier 115
- < Servo motor > 116
- 6-9. DIP switches 119
- 6-10. Error code 121
- 6-11. Exchange of PCB 125
- 6.ELECTRIC COMPONENTS 126
- 6. ELECTRIC COMPONENTS 127
- 7. FOLDING MACHINE 131
- 7-2. Valve 133
- 7-4. Adjustment 136
- Tucking blade R-3J 138
- Tucking blade L-3J 138
- Tucking blade LD-3J 138
- Tucking blade RD-3J 138
- D. Program defect 139
- C. Program defect 140
- B. Program defect 142
- E. Program defect 148
- D. Program defect 149
- A. The flap margin is small 153
- A. The flap margin is small 156
- A. The flap margin is large 157
- 21. The pocket top is narrow 162
- 22. The seam margin is large 163
- <Cause> 168
- Tucking blade D 172
- Tucking blade RDD or LDD 172
- 1 - 2 mm 172
- Tucking blade RD 172
- 4. The base is curved 173
- 8. The corners are round 177
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