Lincoln Electric SVM154-A, Service Manual

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ELECTRICAL DIAGRAMS
G-7
LN-10
SCHEMATIC - DISPLAY PC BOARD
COLD FEED REVERSE
500
500
500
500
500
5V_B
D1
X4
3 4
50V
0.1
C4
LED13
MC14489
Vss
Vdd
X8
3
14
500
100
R37
100
R39
MC14489
Vss
Vdd
X6
3
14
500
GND
IN OUT
X2
4.7
35V
C8
500
50V
0.1
C2
NO
TES :
HEXINV
X4
14
7
500
14
3
Rx
Vdd
d
BANK1
g
DATA OUT
h
/ENABLE
MC14489
DATA IN
f
Vss
BANK3
BANK4
BANK2
a
CLOCK
e
c
BANK5
b
X8
18
16
17
6
5
2
11
1
8
19
15
12
9
20 10
13
4
7
50V
0.1
C9
LED23
100
R38
LED20
LED15
LED14
LED17
LED21
5V_B
NUMBER. NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
ON HOLES SIZES PER E-2056 WITH PUBLISHED STANDARDS
MATERIAL TOLERANCE ("t") TO AGREE ON ALL ANGLES IS + .5 OF A DEGREE
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON 3 PLACE DECIMALS IS + .OO2 ON 2 PLACE DECIMALS IS + .O2
512A
553
L
10138
Ch
’g
e.S
ht.N
o.
X4
9 8
1.50K R31
LED19
MC14489
Vss
Vdd
X5
3
14
475
R15
D2
100
R35
100
R32
100
R33
100
R34
4.7
35V
C11
50V
.0047
C5 1
2
10K
R23
10K
R25
475
R18
475
R20
50V
.0047
C6 1
2
50V
0.1
C10
475
R14
J11
4
J10
3
J11
6
J10
4
GND
IN OUT
X1
J11
5
J10
1
5V_A
TO CONTROL P.C. BOARD
MISO
LATCH
CONTROL SELECT
TRIGGER MODE SELECT
TIMER SELECT
SCK
MOSI
F
552
551
G
H
554
500
J11
3
J10
2
X4
1 2
50V
0.1
C1
50V
0.1
C3
74HC165
X3
16
8
MC14489
Vss
Vdd
X7
3
14
100
R36
J11
8
J11
7
5V_A
500
500
10K
R24
X4
11 10
X4
13 12
475
R26
475
R17
X4
5 6
50V
.0047
C7 1
2
500
475
R19
475
R12
475
R13
1/4W
7/29/96
N
O
N
E
.022/50V
E
D
TO KEYPAD
A
B
J10
6
DISP4
2
1
4
9
5
10
7
6
8 3
COLD FEED FORWARD
GAS PURGE
FEEDER/SCHEDULE SELECT
J10
7
J10
8
J10
5
1A, 400V
SCALE DATE
DR.
RESISTORS = Ohms ( DIODES =
J10
9
DISP3
2
1
4
9
5
10
7
6
8 3
14
3
Rx
Vdd
d
BANK1
g
DATA OUT
f
CLOCK
MC14489
DATA IN
h
Vss
BANK3
BANK4
BANK2
a
/ENABLE
e
c
BANK5
b
X5
18
9
17
6
5
2
10
19
8
1
13
12
16
20 11
15
4
7
1.50K R28
DISP2
2
1
4
9
5
10
7
6
8 3
D
A
C
B
DP
DISP1
4 7
1
5
3
2
6
9
8
DISP8
2
1
4
9
5
10
7
6
8 3
LED5 LED8
(
CAPACITORS =
MFD
LED6
LED11
LED10
LED9
14
3
Rx
Vdd
d
BANK1
g
DATA OUT
h
/ENABLE
MC14489
DATA IN
f
Vss
BANK3
BANK4
BANK2
a
CLOCK
e
c
BANK5
b
X7
18
16
17
6
5
2
11
1
8
19
15
12
9
20 10
13
4
7
LED12
1.50K
R29
DISP7
2
1
4
9
5
10
7
6
8 3
500
500
LED1
LED16
LED7
LED22
LED2
LED4
LED3
1.50K R30
LED18
DISP6
2
1
4
9
5
10
7
6
8 3
DISP5
2
1
4
9
5
10
7
6
8 3
475
R11
14
3
Rx
Vdd
d
BANK1
g
DATA OUT
f
CLOCK
MC14489
DATA IN
h
Vss
BANK3
BANK4
BANK2
a
/ENABLE
e
c
BANK5
b
X6
18
9
17
6
5
2
10
19
8
1
13
12
16
20 11
15
4
7
500
2
10138
EARTH GROUND CONNECTION
D
IS
P
LA
Y
P
.C
. B
O
A
R
D
S
C
H
E
M
A
T
IC
SUPPLY
LA
B
E
L
S
D
O
U
B
LE
H
E
A
D
E
R
POWER SUPPLY SOURCE POINT COMMON CONNECTION FRAME CONNECTION
SHT. NO.
D
-
11 39
LAS
T N
O
. U
S
ED
LED 23
C
-
R
-
VOLTAGE NET
L
SUP’S’D’G.
(UNLESS OTHERWISE SPECIFIED)
C
LE
V
E
LA
N
D
, O
H
IO
U
.S
.A
.
T
H
E
L
IN
C
O
L
N
E
L
E
C
T
R
IC
C
O
.
UNLESS OTHERWISE SPECIFIED)
TYPE EQUIP. SUBJECT
CHK.
COM.
FILEN
A
M
E: L10138_1A
B
UNLESS OTHERWISE SPECIFIED)
G
E
N
E
R
A
L IN
FO
R
M
A
TIO
N
ELECTRICAL SYMBOLS PER E1537
DUAL PROCEDURE
5V_A
C
475
R9
475
R10
1.00K
R6
1.00K
R7
1.00K
R5
1.00K
R4
1.00K
R1
1.00K
R3
1.00K
R2
1.00K
R27
8
16
F
C
B
74HC165
CLK1
H
Vcc
GND
SA
QH
SS/PL
D
A
E
CLK2
G
/QH
X3
9
1
7
15
10
6
2
5
4
3
14
13
11
12
K
K
/M
JH
X
XA 5-2-97
G-7
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.