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[T] Model DB2-B738 (Type #470B)
Potentiometer
Cycle output
CD
©
Needle position
switch
<§>
(
0
)
Hem detection
Machine head
Correction
switch
©CD©
©@®
'©f
@
For
standing work
©
KD(D©I
©@©
(z)®(D
©
©0©
Brake
Presser foot lifter
©
)
i
©
Cycle output
Hem detection
Potentiometer
2P connector
6P connector
3P connector
i
Collector
Anode
+5 V
2
Emitter
Collector
Output
3
-
-
1
0 V
5
6
Emitter
For standing work
2P connector (white) 2P connector (black)
4P connector (red)
1
Cloth presser
Thread trimming
High speed
2
0 V
0 V
0 V
3
4
t©©©©—
DC+ 12 V
Low speed
No.
Machine head
12P connector
Leading power
Leading output
GND
Thread trimming power
Thread trimming output
Not used
Thread wiper power
Thread wiper output
Reverse input
Reverse power
Reverse output
0 V
Presser foot lifter
6P connector
Cloth presser power
Presser input
Option
Cloth presser output
0 V
GND
No.
Brake
2P connector
D
Brake power
B
Brake
[Single-phase]
Motor
Power
6P connector
3P connector
Vf. TH
GND
2
Vf. TH
ac H][o][o][y]
3
if. TH
AC Q]®®®
5
Vf
■
.©©^
6
Motor
—
—
No.
Synchronizer
No.
Operation panel
1
GND
1
0 V
11
SLED
2
DC+ 5 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. SYC
5
SCAN 5
15
LSCAN 1
6
GND
6
SCAN 6
16
LSCAN 2
7
Needle up
7
SCAN 3
17
PC 1
8
Encoder
8
SCAN 4
18
PC 2
9
SCAN 1
19
DC+ 5 V
10
SCAN 2
20
0 V
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