Power Pc Board Schematic - Lincoln Electric SVM138-A Service Manual

G-6

Power PC Board Schematic

H O T - C O L D
I N T E R L O C K
S W I T C H
S 2 A
H O T
C O L D
H O T
2
4
3 2 A
3 2
3 2 A
B 3 2 A 1
7 A
G A S
S O L E N O I D
B 7 A
J1
1
J1
2
31
COMPONENTS IN THE DASHED AREAS ARE NOT ON THE P.C. BOARD UNLESS
OTHERWISE NOTED.
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not
available from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result
in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.
ELECTRICAL DIAGRAMS
31
3
7
9
7 A
4
11
5 2 4 A
7
5 2 4
J 2
2 A
3
2 T W O C O N N E C T O R P I N S A N D T H E R E L A Y
4 CR1
C O N T A C T A R E L O C A T E D O N T H E P . C . B O A R D .
7 J 2
6 6
5 0 4
5
6 2 8 10
12
5 0 0
J1
4
0.4A
1 2 5 V
3 2 A
F1
5 4 1 B
6 9
B 3 2 A 2
B 5 4 1 B
CR1
2 4
C 2 C 3
.047 .047
1 0 0 V 1 0 0 V
7
0 . 2 m H 0 . 2 m H S 7
C1
PT1 1 PT1 3
B 7 D I R E C T I O N
. 0 0 4 7
S W I T C H
1 4 0 0 V
R E V
F W D
D 3
3
2 N 6 3 9 7 16A
S C R 2
4
4 0 0 V
TP1 2 N 6 3 9 7
S C R 1
1 5 0 V
4 5 J
CR1
9
C 5
C 4
. 0 0 4 7
. 0 0 4 7
1 4 0 0 V
1 4 0 0 V 2 3
1
D 2 4
4
D1
16A
16A
4 0 0 V
4 0 0 V B 5 3 9 B
5 3 9 B
8
CR1
5
J1
531
3
3 2 A 115 VAC
T2
24 VAC
621
T O C O N T R O L
R H E O S T A T P L U G 6 2 0
620
530
500
5 3 2
B 5 3 2
J1
6 2 8
6
5 2 5 6 2 8
541
(B)
5 2 5
+ 1 5 V
8
J 2
D 4
D 8
12
M
D 5
5 2 6
T1
B 5 2 6
2 N 5 6 5 5
C 6
13
.15 Q1 Q2
2 0 0 V 2
2 6 V A C /Q1
3
C 8 CLOCK 1
4 RESET 1
D 9
5 3 2
5 2 7
5
1 N 4 9 3 6 D1
(W)
R1
6 SET 1
B 5 2 7 D 6
D 7
3 3 2 7
VSS
C14
DZ1
15V
J 2
5 W
5 S 2 B
H O T C O L D
510
601 I N T E R L O C K
O N S W I T C H
C 7
150 J1 J1
9 . 6 V A C
5 0 V
12 15
T R I G G E R
D Z 2
O F F I N T E R L O C K
10V
6 0 2 5 W
510
531
5 0 0
1 2
X 2
3 4
X 2
621
622
5 6
622
X 2
623
623 9 8
X 2
TRIGGER SWITCH
11 10
X 2
5 0 0
J 2
7
5 2 9
W E L D
C U R R E N T
R E E D C R 2
S W I T C H
J 2
6 2 8
1
510
D16
C 9
1 N 4 9 3 6 D10
13 10
X 2 R14
1.00K CR1
11 Q 3
2 4 V d c
C18
5 0 0 m A
Q5
3 0 0 V
J1 8
5 0 0 1A
D11
1 0 0 V
X1 14
VDD
1 5 3 0
Q1 R13
12
/Q2 T R I G G E R
100
C17 B O A R D
CLOCK 2 11
.15
C15
5 0 0 D12
10 2 0 0 V
RESET 2
1 N 4 9 3 6
D2 9
D Z 3
J1 J1
8
SET 2 16V 9 13
M C 1 4 0 1 3 B
1 W
D19 5 3 0 A
J1 J 2
9
11
5 2 4
5 2 4 A
D 2 0
5 3 0 B
1 N 4 9 3 6
C11
14
4.7
521
J1 3 5 V
Q 2
2 N 5 6 5 5
C10
510
14 14
X1
C 2 0
X 2
M C 1 4 0 1 3 B
7 7
5 0 0
G-6
5 4 0
7
D Z 4
J1
2 7 V
1 W
5
C12
.01
PT1
2 0 0 V
0 . 2 m H
6
J1
5 0 0
10
LN-9 GMA