Brother BAS-761 Service Manual Page 171
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- Table of contents
- BOOKMARKS
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7. FOLDING MACHINE
BAS-7610
7-41
2. The flap margins at the bottom on both sides are not tucked in.
<Cause>
A. The flap margin on both sides are too small.
Adjust the flap margin to 12-15 mm.
B. Tucking blade RD or LD is improperly positioned.
Shift the tucking blade backward, then adjust it so that its edge is aligned with the center blade corner when the
cylinder driving the tucking blade works. (The alignment does not have to be perfect.) At this time, check that the
tucking blades come into the clearance between the D and the RDD or LDD tucking blades.
C. The height between tucking blade RD or LD and tucking blades D and RDD or LDD is improperly
adjusted.
If tucking blade RD or LD is attached above tucking blade D or below tucking blade RDD or LDD, reattach
tucking blade RD or LD, as shown in the figure on the left.
Tucking blade RD
Center blade
1845S
Tucking blade D
Tucking blade RDD or LDD
1 mm
Tucking blade RD
1847S
Connecting block SR assembly
Connecting block SL assembly
Bolt 4X8
Setting plate
Bolt 5X25
Tucking blade LDD square J
Tucking blade
R square J
Tucking blade
L square J
Chamfering blade RJ
Chamfering blade LJ
1846S
Foldin
g
clam
p
assembl
y
Tucking blade RD
Tucking blade RD
Tucking blade D square J
Tucking blade RDD square J
- 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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