Electrical diagrams, G-12 – Lincoln Electric IDEALARC CV-300 User Manual
Page 99
G-12
IDEALARC CV-300
IDEALARC CV-300
ELECTRICAL DIAGRAMS
G-12
M15893 METER PC BOARD SCHEMATIC
+5V
R9
X5
3
4
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X1
6
4
2
12
13
1
10
11
8
5
3
9
X5
11
10
C7
J7
3
3.01K
R28
R25
50V
330p
C5
C3
C2
74HC164
X3
14
7
X5
13
12
50V
330p
C6
J7
2
J7
1
J7
4
R26
54HC74
X4
7
14
X5
1
2
C4
HEXINV
X5
14
7
74HC164
X2
14
7
X5
9
8
R7
C8
LED1
2
1
4
9
5
10
7
6
8
3
R8
R4
1N914
D2
3.32K
R2
R6
R5
C1
D1
300mA
30V
Q1
X5
5
6
3.01K
R27
R3
+5V
+5V
+5V
475
R1
74HC164
X1
14
7
(
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X2
6
4
2
12
13
1
10
11
8
5
3
9
1/4W
.022/50V
LABELS
(UNLESS OTHERWISE SPECIFIED)
M
CHK.
M
M
H
Q
A
C
Q
Q
CLK
Q
Q
Q
B
Q
A1
A2
E
F
G
Q
R
D
74HC164
X3
6
4
2
12
13
1
10
11
8
5
3
9
LED3
2
1
4
9
5
10
7
6
8
3
R14
R15
R21
R19
R22
R16
R13
R24
LED2
2
1
4
9
5
10
7
6
8
3
R11
R20
R10
R18
7
14
/Q1
CLOCK 1
SET 1
RESET 1
Q1
54HC74
RESET 2
N.C.
DATA 1
DATA 2
GND
Q2
CLOCK 2
VCC
SET 2
X4
10
1
11
4
2
3
6
9
13
12
5
8
R23
+5V
+5V
+5V
+5V
1A, 400V
DIODES =
RESISTORS = Ohms (
MFD
CAPACITORS =
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
JCP
SHT.
POWER SUPPLY SOURCE POINT
EARTH GROUND CONNECTION
CLEVELAND, OHIO U.S.A.
DR.
SCALE
METER P.C. BOARD SCHEMATIC
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
01-06-89
DATE
C-
NO.
NONE
D-
LAST NO. USED
8
2
15892
R17
R12
COMMON
DATA
CLOCK
+5V IN
GENERAL INFORMATION
CV WELDERS
THE LINCOLN ELECTRIC CO.
SUPPLY
VOLTAGE NET
FRAME CONNECTION
COMMON CONNECTION
UNLESS OTHERWISE SPECIFIED)
EQUIP.
NOTES :
TYPE
NOTE: ALL UNMARKED RESISTORS = 100 OHMS
UNLESS OTHERWISE SPECIFIED)
ELECTRICAL SYMBOLS PER E1537
28
SUBJECT
15892
SUP'S'D'G.
NUMBER.
R-
4-30-93A
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.