Brother International DB2-B737 Support Question
Brother International DB2-B737 Support Question
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Answer #1: Posted by tmckelvey82 on February 18th, 2013 4:28 AM
tmckelvey82
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Related Brother International DB2-B737 Manual Pages
Parts Manual - Multi - Page 26
Thread Trimmer + Thread Wiper + Quick Back Switch + Automatic Presser Foot Lifter [Solenoid Type] W.*
DIFFERENT PARTS LIST/ZUBEHoRLISTE LISTE DES PIECES ACCESSOIRES/LISTA DE PIEZAS ACCESORIAS
BROTHER INDUSTRIES, LTD.
• DB2-B737- 0 N •
MADE IN JAPAN
1 .
Parts No. 183400- 001 S02738- 001 S02740- 000 S02739- 000 S03816- 001 025050- 236
ftVINIJfil3p- a.
WW2
Thin materials
3 ....
Parts Manual - Multi - Page 38
NAGOYA, JAPAN
1 17-737 195737-201 1987.8 Printed in Japan/Gedruckt in Japan/Imprime au Japon/Impreso en Japon ¶467 $tEr*i
1 32
TEL (052) 824-2392
BROTHER INDUSTRIES, LTD.
Network Users Manual - English - Page 1
Iva I
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bay .8*
trot s rst:
tr otI
BROTHER INDUSTRIES, LTD.
DC MOTOR SERVICE MANUAL
MD-802 (Single-Phase Type)
MD-812 (Three-Phase Type)
...Z. mAt-±rwit lwnwwi
Network Users Manual - English - Page 2
The manual describes the motor and the control box and also covers adjustments. TABLE OF CONTENTS
0:IESCRIPTION OF THE MOTOR4
1
((NAME OF EACH COMPONENT
2
(NAME OF EACH PART)
3
.CONFIGURATION;
4
(...Standing work machine
12
pi Application to production control system
13
((OPERATION INSTRUCTION
14
Installation of operation box
14
M Motor and control box (Models DB2-B737 •...
Network Users Manual - English - Page 3
...))
22
M Model DB2-B737 • B747 • B748 • B791 • B793 • B795 • B798 (Type 300B)
22
Model DB2-B738 (Type #4708)
23
TROUBLESHOOTING
24
CHECKINGTHE MOTOR©
25
111 Motor
25
ri Brake
25
CHECKINGTHE MACHINESOLENOID)S)
26
111 Solenoid load of the machine
26
121 Hem sensor
26
3 B737 Machine control system block...
Network Users Manual - English - Page 4
... adjusting the solenoid brake spacing. ©DESCRIPTION OF THE MOTOR
*The Brother DC motor is best suited for the following sewing machines.
[DB2-B7371 4 ,7
[DB2-6738]
4
[DB2-67911 *The DC motor is also applied to the automatic thread trimming machines, models DB2-6748, 8795, and 8798.
[DB2-B793] Quiet Operation While the clutch motor produces windy or idling sounds...
Network Users Manual - English - Page 5
...]
ED ED
Operation Box E-2
brother
E-4
-4
• il El
0
All
\ ,I c T , A 8 C O I
I
A! rSc
I
III:
. 0 m. NAME OF EACH COMPONENT
The operation box is best suited to be Applied [DB2-B738] Use the operation box which is optionally available. t0 RIO@EIMORI
El m './
X
V V
se ES D C ID N ea I
Operation Box E-4
Machine Head to be Applied [DB2-B737 • B747 • B748...
Network Users Manual - English - Page 7
...board to the control box Q and the brakes are applied so that the operation of the sewing machine is sent to run the motor Q at the needle up stop
position set by the synchronizer... When the power switch is turned on and the treadle 0 is stepped on the pulley of the sewing machine, is stopped at the thread trimming speed (inching
speed). Then the signal from the synchronizer is supplied ...
Network Users Manual - English - Page 9
...down stop position. Check the belt tension.
*The machine rotates counterclockwise as seen from the pulley side. *Adjust the belt 0 by finger.
2 Needle position detector (synchronizer) Model DB2-B747 • B791 • B793 •...does not stop properly, loosen the screw 0 and move the needle up stop the machine at the needle up stop position so that it
loosens about 10 mm when pressed by...
Network Users Manual - English - Page 10
... the power switch and pull out the synchronizer code. Needle up stop position. * When the machine pulley is turned on and the needle stopped in the direction of normal pulley movement to neutral.... 10 to 12 mm with thin and regular materials, 10 to lower the needle bar.
Synchronizer Model DB2-B737 • B748
Higher
Lower
Lower
Higher
0
Needle up stop Thin, regular materials: 10 ^ 12 ...
Network Users Manual - English - Page 11
...DB2-B737...(low speed and thread trimming)
is turned clockwise, the low machine speed is adjusted to decrease. 5. When the VR2 0 (backtacking...speed)
0
varies.) 4.
NOTE 1: It is furnished with each other parts but the volume knobs for lighting, or the transformer may be broken.... The control circuit board is changed by the
maximum sewing speed volume knob, so the VR3 requires no adjustment...
Network Users Manual - English - Page 15
...1
Connector
2
Emitter
Model B738
Collector
1
*With special connectors (cycle output), connect the machine to the external equipments.
*Output signals are sent from the open collector of the photo transistor... or less Max. This terminal is procided with the tread trimming output terminal. Models DB2-B737 • B747 • B791 • B793. Collector
3
*Output signals are...
Network Users Manual - English - Page 16
... stops at the needle down position and the machine is stopped during the
sewing operation, the needle stops at the needle up position). Four screws 0 are provided. And use (Models DB2-B737 • B747 • B748 • B791 • B795 • B798)
Power switch
O0
a 11
brother
0©000
*Push the "ON" button of the...
Network Users Manual - English - Page 17
...number A (0 to 9) with the counter 0.
The
machine runs in a cycle of A, B, C, and D, then stops running.
▪ For Fixed Stitch Sewing 1. The number of stitches for thread trimming. First ...counter switch is same as follows.
brother E-2
0
II II
-l t d
0
DI i
Al031 Aid
&
LY
0
O LA
EOE
0 0 0 0000
ro 6 bmEt-h4er
1-- 3 Operation box (Models DB2-B737 • B747 • B791 &#...
Network Users Manual - English - Page 18
... when the treadle is set to reverse position. If the actuator is pressed while the machine is ON. E-4
Application
Normal lock stitch
Fixed stitch sewing OFF
Start backtack
End backtack
Start/end backtack
Fixed stitch sewing
Fixed stitch sewing ON (thread trimming
activated by one correction stitch if the actuator is pressed when the...
Network Users Manual - English - Page 24
...OF CONNECTOR PANEL
1 Model DB2-B737 • B747 • B748 • B791 • B793 • B795 • B798 (Type 3O0B)
For standing work
O th`
0 CD CD
Machine head
Presser foot lifter
000
...12
For standing work 4P connector (red)
High speed 0 V
DC + 12 V Low speed
Machine head
2P connector (black)
12P connector
Thread trimming
Leading power
0 V
Leading output
GND
Thread trimming...
Network Users Manual - English - Page 25
... V
2
DC + 5 V 12
SCAN 0
3
Needle down
3
SCAN 7
13 LSCAN 3
4
0 V
4
BUZZER 14 DPSCAN
5
NO. 2 Model DB2-B738 (Type #47OB)
Potentiometer
Cycle output
2
Needle position
switch
Hem detection
O
Correction
C)SC) 00C)
switch
ArT\ \Li
0
0
0
For standing work
Machine head
Brake
scp()
Presser foot lifter
Cycle output No.
2P connector
1
Collector
2
Emitter
3
4
5
6
Hem...
Network Users Manual - English - Page 29
... ->
Ic 23 24 TC 4050 BP
Scan 0
Scan 1 Scan 2 ). S LED PC1 PC2
Operation panel
Set Ply sensor Input Sewing mode Programme
Start tack End tack Repeat Auto SP Slow start Half step 3 B738 Machine Control System Block Diagram
MD-812-470B
Treadle Front SW Rear SW
Actuator SW Presser SW NL.
Scan...
Network Users Manual - English - Page 30
4 B737 Machine Control System Block Diagram
MD-812-300B
Pedal Front SW Rear SW
Actuator SW Presser SW
Synchronizer DN, UP ENC
Hic 1 INP circuit
Transformer
+35V
Power supply
+12V +5V
01V
Hic 3 ENC cont
Motor lock protective
Power ON-OFF detection
)
CPU MB8841
)
Hic 2 Drive circuit
Machine brake Reverse feed solenoid Trimmer solenoid...
Network Users Manual - English - Page 31
...
TVR
7 1 SVR
CP5 CP4 O
CP6 0 CVR
-
0V
050V
050V
-15V
O +15V CP3
Phote coupler
TV R : Torque adj. *SVR : Speed adj. *CVR: Current limit adj.
151 B737.
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