Brother BAS-761 Service Manual Page 122
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- Table of contents
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6.ELECTRIC COMPONENTS
BAS-7610
6-48
E-536
Model numbers are for single
(32 - 63) but data does not
contain a single switching
command. (Model No. 32 - 63)
• The check of data (Delete the double switching command.)
* Turn ON DIP switch B-6 and carry out error disregard.
(A data check and sewing clamp are surely carried out.)
E-540
Machine head synchronization
sensor error or machine head
motor error
<When a motor rotates>
• Malfunction of machine sensor (synchronizing).
• Malfunction of machine sensor harness.
<When a motor does not rotate>
• Malfunction of machine motor or its servo amplifier.
E-550 Needle up stop error
• Malfunction of machine sensor ( “needle up” or “synchronizing” ).
• Malfunction of machine sensor harness A or B.
• Old servo harness Z is used. (Phenomenon : A sewing machine does
not carry out reverse needle up after the thread trimming. And it rotates
and stops only 2 or 3 times at a low speed.)
• Poor adjustment of sensor dog.
• Poor adjustment of thread trimmer cam.
• Upper shaft of the sewing machine is heavy.
• Malfunction of machine motor.
E-560
Malfunction of presser foot
cylinder or sensor
<Presser foot operates>
• Poor connection of machine sensor harness A.
• Malfunction or poor connection of presser foot sensor of machine
sensor harness B.
<Presser foot does not operate>
• Malfunction of solenoid valve No.25.
• Poor connection of main valve harness No.25.
E-570 2 row sensor error
<2 row change operates>
• Poor connection of 2 row sensor harness A or B.
• Malfunction or poor connection of two cylinder sensors (D-A96 or D-
7A1).
• Evasion by DIP switch B-4 ON is possible.
<2 row change does not operate>
• Malfunction of solenoid valve No.14 or 15.
• Poor connection of main valve harness No.14 or 15.
• Mechanical poor adjustment of a clamp
E-580
Malfunction of zigzag cylinder
or sensor
<Zigzag operates>
• Poor connection of machine sensor harness A.
• Malfunction or poor connection of zigzag sensor of machine sensor
harness B.
<Zigzag does not operate>
• Malfunction of solenoid valve No.26.
• Poor connection of main valve harness No.26.
E-600 No sewing data
• Read data.
E-700 Read error of floppy disk
E-701 Write error of floppy disk
• Malfunction of the floppy disk.
• Disconnection or poor connection of FDD harness or FDD power supply
harness.
• Failure of FDD.
E-710
No sewing data for number
specified.
• Check the floppy disk or specified number.
E-711
Data writing carried out with no
sewing data
(Omission)
E-720 No disk in FDD. (Omission)
E-730 Floppy disk is write-protected. • Check the write protector of the floppy disk.
E-740
Insufficient free space on floppy
disk
• Check the floppy disk.
E-750
Floppy disk cannot be
formatted.
• The floppy disk is protected.
• Malfunction of the floppy disk.
• Failure of FDD.
- 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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