ARC 1 8 5 0
PRO
WEL D
PAGE 12
Figure 10
GUN TIME CONTROL P.C. BOARD
P/N 600-0010
2
1
ON
OFF
IC
1
0
4
V
1
1
2
C104
+
+
R
1
2
2
IC
1
0
3
R
1
2
1
D
1
2
2
R
1
2
3
R
1
2
4
C
1
0
6
C107
D
1
1
8
R
1
3
0
R
1
2
8
D
1
2
5
V106
D
1
2
6
R
1
4
4
R
1
3
1
R
1
3
2
D
1
1
9
D
1
1
6
R
1
4
5
D
1
0
3
R
1
1
4
C
1
0
2
+
D
1
1
7
Z
D
1
0
2
R
1
1
9
IC
1
0
2
D
1
1
4
R
1
1
8
R
1
1
2
R
1
2
5
C105
V
1
0
9
V
1
1
0
D
1
1
3
R
1
1
7
D
1
1
5
R
1
1
6
D
1
1
2
D
1
0
4
V
1
0
8
R
1
1
5
+
R141
R
1
4
2
O
P
1
0
1
V103
D
1
0
2
R
1
0
3
R
1
5
5
V111
D
1
1
1
D
1
3
9
O
P
1
0
4
R126
R127
R153
D124
ZD105
D127
C108 +
R
1
3
9
R
1
3
8
C
1
1
0
+
R
1
0
4
C
1
0
9
+
R
1
2
9
R
1
2
0
V105
R137
OP
109
OP
105
C
1
1
1
R
1
4
9
R
1
4
3
C
1
0
3
R
1
3
6
R
1
3
5
R
1
5
0
R
1
3
4
C
1
1
2
D140
OP
102
R102
R
1
0
1
R
1
1
0
R
1
0
9
R
1
0
8
R
1
4
0
C101
+
D101
D
1
3
3
D
1
3
2
D
1
3
5
D
1
3
4
D
1
3
8
R
1
5
1
Q
1
0
1
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1
0
7
D
1
0
8
D
1
0
6
D
1
0
5
Z
D
1
0
3
Z
D
1
0
4
V
1
0
2
R107
D121
R
1
1
3
R
1
0
5
IC
1
0
1
R
1
4
6
D
1
0
9
VR101
R111
R154
OP
103
O
P
1
1
0
C
1
1
5
R
1
4
7
D110
C114
OP
106
C113
OP
107
OP
108
R133
D
1
3
1
D
1
3
0
D
1
2
9
D
1
3
6
D
1
3
7
R
1
5
2
D120
V104
V107
Z
D
1
0
1
R148
Summary of Contents for ARC 1850
Page 1: ...OPERATION MAINTENANCE MANUAL ...
Page 2: ......
Page 4: ...ARC 1850 PRO WELD ...
Page 5: ...ARC 1850 PRO WELD ...
Page 6: ...ARC 1850 PRO WELD ...
Page 7: ...ARC 1850 PRO WELD ...
Page 23: ......