Filter
Top Products
G-5
ELECTRICAL DIAGRAMS
DH-10
Control Board Schematic (Sheet 2) (G3040-2)
X7
13
10
11
DPG1
505
505
3.32K
R92
GUN 2
PROC A
C31
500
4.75K
R98
D49
GUN 1
2.21K
R171
X16
1
6
7
1.00K
R90
2.21K
R91
J6
5
X16
13
10
11
3.92K
R93
2.21K
R186
J6
12
512
500
512
D19
505
BLACK
BLUE
RED
520L
519L
519R
DUAL PROCEDURE
DUAL PROCEDURE
PROC B
PROC A
PROC B
C30
4.7
35V
C100
LM224
X6
4
11
488
505
500
2.21K
R234
X10
1
6
7
X10
14
8
9
D50
J1
3
4.7
35V
C33
D52
WHITE
2.21K
R99
2.21K
R232
10.0K
R235
2.21K
R233
J1
1
4.75K
R102
J1
2
D53
10.0K
R100
512
TRIG2
J1
4
J7
3
D33
1.00K
R101
C55
D51
4.75K
R236
GLP
500
512
500
CURRENT
505
512
500
505
WHITE
BLUE
BLUE
SENSE
FAULT
GROUND
PROTECT
CURRENT
ARC
WHITE
500
REV
REV
475
R108
IR2110
4.75K
R106
6.19K
R107
X4
3
2
1
1.0
35V
C40
GAS SOLENOID 1
TO
50V
0.1
C41
4A
200V
D20
+5REF
500
500
FWD
P.C. BOARD
FWD
INTERFACE
CR1-
475
R109
50V
330p
C44
50V
330p
C45
GAS
1N4936
D21
Vss
HO
Vcc
Vb
nc
SD
nc
HIN
Vdd
Vs
COM
nc
LO
LIN
X26
6
14
10
9
11
3
2
1
8
7
5
4
13
12
1N4936
D22
SOLENOID
22.1K
R105
500
LM2901
X5
3
12
50V
0.1
C81
542
SWITCHING
-12.8 VDC
B
+12.8 VDC
A
C
POWER SUPPLY
50V
0.1
C34
50V
0.1
C175
1.3K
R174
150K
R181
1N4936
D48
26.7
R182
200V
.022
C60
50V
2700p
C76
332
R175
1N4936
D35
X4
74HC132
7
14
X17
74HC132
7
14
13.7K
R177
50V
2700p
C75
J8
2
50V
0.1
C36
50V
0.1
C37
VFB
CS
COMP
RT/CT
VCC
OUT
VREF
GND
X28
2
3
5
1
6
4
8
7
50V
2700p
C77
33.2K
R139
512
J6
3
50V
0.1
C74
3.32K
R96
2.21K
R173
X3
11
10
13.7K
R167
J7
1
5.62K
R189
J6
1
2.21K
R188
X7
2
4
5
3.32K
R169
D45
332
R170
50V
.0047
C72
44.2K
R172
D46
50V
0.1
C73
J7
6
3.32K
R160
5.11K
R187
X7
1
6
7
4.75K
R162
J6
6
3.32K
R166
J7
12
332
R164
5.11K
R185
3.32K
R97
X7
14
8
9
D44
TACH
512
512
512
500
512
512
505
TACHS
500
512
TACH. 2
TACH. 1
BLACK
BLUE
RED
50V
0.1
C71
44.2K
R165
13.7K
R168
50V
.0047
C70
3.32K
R184
D43
4.75K
R163
5.62K
R183
500
500
512
488
500
505
500
500
512
500 500A
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
SOLENOID
+5 VDC
SOLENOID
DRIVER
DRIVER
NOTES :
50V
0.1
C38
50V
0.1
C32
X17
11
13
12
LM2901
X7
3
12
50V
0.1
C39
LM2901
X16
3
12
1N4936
D26
4A
200V
D47
5W
2500
R146
T1
4
2
1N4936
D36
1.50K
R137
1.8
20V
C59
1.00K
R138
GND
IN
OUT
X29
2
1
3
18
15V
C57
G
D
S
18A
200V
Q14
.5
5W
R180
6.19K
R178
1.50K
R176
D34
512
1W
16V
DZ9
5600
35V
C80
T1
7
6
100K
R179
D
G
S
15A
60V
Q9
D
G
S
15A
60V
Q4
T1
10
9
N.B PRESENT ON THE DH12 MODELS ONLY.
NUMBER.
LABELS
COMMON CONNECTION
EARTH GROUND CONNECTION
D-
VOLTAGE NET
GAS
SOLENOID
GAS SOLENOID 2
3040-2
512(R)
ELECTRICAL SYMBOLS PER E1537
DIODES =
FRAME CONNECTION
522(R)
POWER SUPPLY SOURCE POINT
LM2901
X10
3
12
SHEET 2 OF 2
CR2-
G
1A, 400V
.022/50V
1/4W
GENERAL INFORMATION
C-
CAPACITORS =
FILE: G3040_2BA
SUPPLY
LAST NO. USED
UNLESS OTHERWISE SPECIFIED)
R-
UNLESS OTHERWISE SPECIFIED)
500
500
SOLENOID 2
D18
DPG2
TRIG1
505
2.21K
R114
2.21K
R133
J6
10
1.00K
R134
J6
8
1200
100V
C56
D27
D32
1.00K
R95
D25
J7
8
C47
J8
1
X16
2
4
5
4.75K
R94
J7
5
3.32K
R116
C29
D17
20
50V
C79
500
505
512
500
512
520R
TRIGGER 1
TRIGGER 2
WHITE
WHITE
WHITE
4.75K
R115
4.75K
R131
X16
14
8
9
33.2K
R140
542
1200
100V
C78
3.32K
R89
J7
10
3.32K
R132
IR2110
J7
11
100
R150
1N4936
D24
100
R104
1N4936
D23
50V
0.1
C43
50V
0.1
C46
15.0
R154
G
D
S
200V
33A
Q11
100
R111
G
D
S
200V
33A
Q10
4.75K
R112
X17
6
5
4
50V
330p
C62
4.75K
R149
6.19K
R148
X17
3
2
1
X17
8
10
9
50V
0.1
C64
1N4936
D41
CR1
5 4
J6
11
J6
9
X4
11
13
12
50V
0.1
C42
512
500 500
505
512
505
542
500
505
1N4936
D39
CR1
5
3
J7
9
MOTOR 1
WHITEWHITE
M
539(L)
BLACK
MOTOR 2
539(R)
M
BLACK
541(L)
CIRCUITRY
MOTOR REVERSING
541(R)
475
R153
500
C
E
G
600V
40A
Q13
100
R119
4.75K
R155
15.0
R152
50V
0.1
C67
1.0
35V
C68
4A
200V
D42
1N4936
D38
X5
4
2
5
150
R157
+5REF
AVE
4.75K
R130
750
R128
50V
330p
C48
13.7K
R120
X6
14
13
12
10K
R126
100
R103
D31
3.74K
R117
X6
7
6
5
X4
8
10
9
X5
14
8
9
3.92K
R161
3.92K
R159
50V
0.1
C69
500
505
DIR
PWM
500
22.1K
R125
Vss
HO
Vcc
Vb
nc
SD
nc
HIN
Vdd
Vs
COM
nc
LO
LIN
X27
6
14
11
9
12
3
2
1
10
7
5
4
8
13
10K
R118
D29
50V
0.1
C65
150
R110
3W
0.05
R158
3W
0.05
R156
200V
.33
C66
1N4936
D40
C
E
G
600V
40A
Q12
100
R151
50V
0.1
C63
13.7K
R121
X4
6
5
4
475
R147
50V
330p
C61
X5
13
10
11
FAULT2
FAULT1
500
512
500
(
(UNLESS OTHERWISE SPECIFIED)
MFD
RESISTORS = Ohms (
522(L)
512(L)
1W
16V
DZ7
600mA
40V
Q7
3.74K
R123
10K
R136
J7
2
X10
2
4
5
J5
10
X10
13
10
11
100
R141
C58
10K
R144
1W
16V
DZ8
J6
7
4.75K
R143
22.1K
R142
SOLENOID 1
VL
500
512
5.62K
R113
100
R135
5.62K
R145
40V
600mA
Q8
40V
600mA
Q5
J6
2
J7
7
1N4936
D37
600mA
40V
Q6
1.00K
R129
1.0
35V
C50
50V
0.1
C53
3.92K
R127
C51
D28
1.0
35V
C54
50V
330p
C52
2.67K
R124
6.81K
R122
J5
6
J5
1
J5
5
J5
8
J5
2
J5
14
J5
12
J5
3
J5
4
X5
6
1
7
J5
11
J5
7
50V
0.1
C49
J5
9
J5
13
D30
5-2-97
G-5
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
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 avail-
able 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.
G3040-2
5-2-97