Brother BAS-761 Service Manual Page 117
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6. ELECTRIC COMPONENTS
BAS-7610
6-43
6-8-2. Abnormalities and a measure
If abnormalities occur on servo amplifier or a motor (E-870, 880, 890), “AL. **” will be displayed on the display part of
servo amplifier. The meaning of an error code and the list of check items are as follows.
< Servo amplifier error code >
Error code The contents of an error Check and measure
AL. 10 Voltage is insufficient.
1.Power su
pp
l
y
volta
g
e is low.
(
The volta
g
e between L1 - L2 is less
than 160V.)
2.There was an instant power failure.
3.Power su
pp
l
y
ON was carried out immediatel
y
after the
p
ower
supply OFF.
AL. 12 Memory problem 1
AL. 13 Clock problem
AL. 15 Memory problem 2
Even if it removes connectors CN1A, CN1B and CN2, and carries
out
p
ower su
pp
l
y
ON, alarm comes out. → Exchan
g
e the servo
amplifier.
AL. 16 Encoder problem 1
1.The connector CN2 does not connect.
2.Malfunction of the encoder harness.
3.Failure of encoder. → Exchange the servo motor.
AL. 17 PCB problem 2
AL. 19 Memory problem 3
Even if it removes connectors CN1A, CN1B and CN2, and carries
out
p
ower su
pp
l
y
ON, alarm comes out. → Exchan
g
e the servo
amplifier.
AL. 20 Encoder problem 2
1.The encoder harness of the motor side does not connect.
2.Malfunction of the encoder harness.
AL. 24 Motor output earth-fault
1.The
p
ower su
pp
l
y
in
p
ut line L1 or L2, and the servo motor out
p
ut
line U, V or W touch
2.The
p
ower su
pp
l
y
in
p
ut line L1 or L2, or the servo motor out
p
ut
line U, V or W deteriorated. → Exchan
g
e their line of the servo
motor.
AL. 25
The absolute position was
disappeared.
Dro
p
volta
g
e of the ca
p
acitor in a encoder. → Exchan
g
e the servo
motor.
AL. 30 Regeneration problem
1.Continuation o
p
eration of the
p
ower su
pp
l
y
volta
g
e is carried out
in the hi
g
h state.
(
The volta
g
e between L1 - L2 is more than
253V.)
2.The permission regeneration electric power was exceeded.
3.Turn the power OFF, and wait five minutes.
AL. 31 Over speed
1.Failure of encoder. → Exchange the servo motor.
2.Problem of servo am
p
lifier
p
arameter. → Exchan
g
e the servo
amplifier.
AL. 32 Over current
1.Output line of servo motor U, V or W touch or earth-faulted.
2.Even if it removes connectors CN1A, CN1B and CN2, and carries
out
p
ower su
pp
l
y
ON, alarm comes out. → Exchan
g
e the servo
amplifier.
3.The over-current detection circuit incorrect-o
p
erated b
y
the outer
noise.
AL. 33 Over-voltage
1.Power su
pp
l
y
volta
g
e is hi
g
h.
(
The volta
g
e between L1 - L2 is less
than 260V.)
2.Failure of built-in re
g
eneration resistor. → Exchan
g
e the servo
amplifier.
AL. 35 Instruction pulse problem
1.Malfunction of servo harness.
2.The noise mixed in the instruction pulse.
3.Failure of main PCB.
AL. 37 Parameter problem Exchange the servo amplifier.
AL. 45
The main circuit element
overheating
Exchange the servo amplifier.
AL. 46 Servo motor overheating
1.The circumference tem
p
erature of a servo motor is over 40
degrees.
2.Problem in attachment of a servo motor.
3.The heat
p
rotector of a servo motor broke down. → Exchan
g
e the
servo motor.
AL. 50
AL. 51
Over-load
1.The feeding unit collided with the obstacle.
2.The connection mistake of a servo motor output line U, V, W.
3.Failure of encoder. → Exchange the servo motor.
AL. 52 An error is too large.
1.Harness does not connect, or connection mistake of harness.
2.The tor
q
ue b
y
the shorta
g
e of
p
ower su
pp
l
y
volta
g
e is insufficient.
3.The feeding unit collided with the obstacle.
4.Failure of encoder. → Exchange the servo motor.
8.8.8.8 Watcher Exchange the servo amplifier.
AL. E6 Emergency stop Poor connection of harness, or disconnection
- 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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