Brother International DB2-B737 Support Question
Brother International DB2-B737 Support Question
Find answers below for this question about Brother International DB2-B737.Need a Brother International DB2-B737 manual? We have 2 online manuals for this item!
Question posted by Lizard1231 on June 16th, 2022
So Machine Skipping Stitches
My machine is skipping stitches.I do not know how to fix it.I the have manual but I don't learn that way I learned by seeing
Current Answers
Answer #1: Posted by SonuKumar on June 16th, 2022 10:42 PM
SonuKumar
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Related Brother International DB2-B737 Manual Pages
Parts Manual - Multi - Page 26
...S02740- 000 S02739- 000 S03816- 001 025050- 236
ftVINIJfil3p- W.*
DIFFERENT PARTS LIST/ZUBEHoRLISTE LISTE DES PIECES ACCESSOIRES/LISTA DE PIEZAS ACCESORIAS
BROTHER INDUSTRIES, LTD.
• DB2-B737- 0 N •
MADE IN JAPAN
1 .
Thread Trimmer + Thread Wiper + Quick Back Switch + Automatic Presser Foot Lifter [Solenoid Type]
Option parts / Sonderzubehor Pieces en option / Piezas opciona...
Network Users Manual - English - Page 2
... 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 •...DB2-B737 • B747 • B791 • B793 • B795 • B798)
19
pi S•ingle-phase/100V type #470B (Model DB2-8738)
20
E Three-phase/200V type #470 (Model DB2-8738)
21 Read the service manual...
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
.... 2. ©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] Applicable to Standing Work and Automation The application for standing works and automation is secured...
Network Users Manual - English - Page 5
... V
se ES D C ID N ea I
Operation Box E-4
Machine Head to be Applied [DB2-B737 • B747 • B748 • B791 • B793 • B795 • B798]
Power Switch I
O
Synchronizer
0
0
t -rT-r1 Treadle Unit
bEoXEtDhReA r•
PROGRAMMING
SET
Favr
r 2PRODOMOIE 3 4
MONITOR
CrFIECTION A B C D CORRECTION
MEE 0000 +0.5
1.51,
. 4e1
411
Machine Head to your work. brother
E-2 Ai...
Network Users Manual - English - Page 6
...1.
Handle with great care. Handle these sections with great care. 4. Keep away from such machines which make strong noise as high frequency welder for both single-phase and three-phase types. ...CONFIGURATION
Synchronizer
Solenoid
10/30 Source
Fuse
L
Treadle
DC. In setting down the machine head or touching the needle, be sure to turn off the power switch, remove the ...
Network Users Manual - English - Page 7
... to the control box 0 and the brakes 0 are applied so that the operation of the sewing machine is supplied to the motor Q by the control circuit board to run the motor Q at ...treadle Q is returned to the neutral position (with foot off), the neutral signal is sent to drive the sewing machine. 2. When the treadle is given by the treadle unit. .-13RINCIPLE OF CONTROL SYSTEM
0
00
0
OO
...
Network Users Manual - English - Page 9
... properly, loosen the screw 0 and move the thread trimming needle down . 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 • B795 • B798
*Take off the power switch.
0
Position Adjustment...
Network Users Manual - English - Page 10
...should be 18 - 22 mm. 3. Turn the other way to adjust. * Check the needle up stop position.)...machine pulley is replaced. nizer for the Model B748 the needle up stop position 10 - 14 mm.) Adjust as follows when necessary.
*Turn the power off the power switch and pull out the synchronizer code. Loosen screw 0 and move the synchronizer 0 to lower the needle bar. Synchronizer Model DB2-B737...
Network Users Manual - English - Page 11
...(Model DB2-B737) The high speed volume, backtack stitch volume, ...0
varies.) 4.
NOTE 1: It is dangerous to touch the volume knobs by the
maximum sewing speed volume knob, so the VR3 requires no adjustment. 5. Adjust the volume knobs with the... 0 (low speed and thread trimming)
is turned clockwise, the low machine speed is adjusted to secure the fuse holder cap after replacing or inspecting...
Network Users Manual - English - Page 12
... heavily. Be sure to (d). Remove the brushes 0 . 5. Tighten the clamp screws 0 with a new one. 6. Connect the motor plug.
. B
151 Brush replacement
0 a
O
O ..;
0
Stepping Pressure *If the machine starts running at low speed just by
placing your foot on the treadle or by stepping on it responds lightly. And when loosened, it lightly...
Network Users Manual - English - Page 15
...
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 of the photo coupler. operating current: DC20 mA or less Max.
operating voltage: DC20 V or less
2 1
Connector
2
Emitter B795- Models DB2-B737 • B747 • B791 • B793. Max...
Network Users Manual - English - Page 16
... 0 from 215 spm up position. Installing on the Machine Head 1. Fix the mounting plate 0 on and the actuator 0 is stopped during the sewing operation, the needle stops at the needle up to the...• B793 • B795 • B798. 3. The machine speed can be adjusted from the back of operation box Models DB2-B737 • B747 • B748 • B791
•
•
:g•
Models...
Network Users Manual - English - Page 17
... (1 through 99 with the counter 0. 4. 3 Operation box (Models DB2-B737 • B747 • B791 • B793 • B795 • B798)
*The switch settings and the number of A, B, C, and D, then stops running.
▪ For Fixed Stitch Sewing 1. And when the lower switch is pressed,
the number increases. *The machine runs according to 9) with the counter 0. 5. Set the...
Network Users Manual - English - Page 18
... end backtack when the treadle is set to reverse position. 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 machine is stopped and the correction switch is completed. (No. 5 through 8 in the chart...
Network Users Manual - English - Page 19
... and thread trimming
I 1
Al 9 / I V I
N NI
Thread trimming activated after end backtack by reversing
the treadle. No.5 Fixed stitch sewing only
No.6 Start backtack and fixed stitch sewing
Fixed stitch I
N Actuator I correction
I
B/ Ai /
N
Fixed stitch I
No.3 End backtack
No.4 Start/end backtack
A I
B/ /
A
C/ I /B/ Ii"A
Thread trimming activated by reversing the treadle. No.1 Normal...
Network Users Manual - English - Page 24
....DETAILS 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
I00&#...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
...
Network Users Manual - English - Page 25
...
BUZZER 14 DPSCAN
5
NO. TH
3
if. TH
4
Motor +
5
Vf
6
Motor -
TH
2
Vf. 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 detection 6P...
Network Users Manual - English - Page 29
...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 ...ic 2 ROM UPD 27128
Potentionmeter
Ply sensor control
A/D cony. Scan 3 ). Drive Tr
Machine brake Trimmer solenoid Wiper solenoid Reverse feed solenoid Low speed Back tack speed High speed
Auto ...
Network Users Manual - English - Page 30
... 2 Drive circuit
Machine brake Reverse feed solenoid Trimmer solenoid Wiper solenoid Presser solenoids
Start, repeat tack speed Back tack speed High speed Electric brake
Hic 1 INP circuit
a Operation panel
3e.
•
Start tack SW
End tack SW
aO-• Slow start SW •
PI
Correction SW
Repeat tack SW Fixed stitches SW Fixed + Trimmer...
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