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G-8
ELECTRICAL DIAGRAMS
R3R
R3R-300 Control PC Board
IDENTIFICATION
PART No.
REQÕD.
ITEM
R80,R81,R82
R92,R93,R94
R92,R93,R94
QU1,QU2,QU3
C1
C2,C30
C3
C4,C9
C5,C10,C27,C28,C29
C6
.02/600
C11
C18,C19,C20
C21,C22,C23
C31
D1,D2,D3
D4,D5,D6,D7,D8,D9,D10
1N4004
D31,D32,D33
DZ1
DZ2
DZ3
DZ4
DZ5,DZ6,DZ7,DZ8
DZ9
R1,R2,R3
R4,R5,R6,R7,R8,R9
R10,R29,R52
R11,R48
R12,R15,R21,R27
R13,R14,R32,R35,R37,R39
R16
R23,R65,R66,R67
R24
R25,R26,R41,R77,R78,R79
R28,R45,R74,R75,R76
R30,R31,R91
R33
R34,R95,R96,R97
R38
R40,R83,R84,R85
R43,R49
R46
R50
R51
R54
R55
R56,R57,R58,R62,R63,R64
100 1/2W
R68,R69,R70,R71,R72,R73
R90
10K 1/2W
SCR1,SCR2,SCR3
TP1,TP2,TP3
X1,X2
X3
C7,C12,C14,C15,C24,C25,C26
,D11,D12,D13,D14,
D24,D25,D26,D27,D28
,D29,D30,D34,D35,
D36
50/25
1
2
2
1
1
1
1
3
3
3
7
5
S13490-8
S13490-35
S13490-4
S16668-5
S13490-62
T11577-62
S13490-102
T11577-57
T12199-2
T11577-38
S13490-73
50/15 OR 16
.022/200
.022/50
.0033/200
20/50
1/200
.047/100
0.1/400
T12199-1
1N4007
T12199-4
T12702-23
3
1
1
1
1
1
4
T12702-33
T12702-9
T12702-40
T12702-29
T12702-8
IN4005
1N5352B
1N5347B
1N5234B
1N4735
1N4744A
1N5240B
2
S15000-5
T12704-69 2N4403
3
T12707-4
3
3
2
6
4
9
1
T12300-73
T14648-12
T10812-67
S19400-1503
S19400-2672
S19400-1003
T10812-62
S19400-6813
S19400-1004
250 20W
1500 5W
100K 1/2W
500 1/2W
1
1
1
1
1
1
1
1
4
4
4
2
3
5
6
T10812-39 50K 1/2W
S19400-6811
S19400-4751
S19400-2213
T14230-23
5.0 MEG
S19400-5622
T14231-12
150 1/2W
S19400-1002
S19400-2673
S19400-2670
1
1
9
6
3
3
2
T14231-16
T14231-2
T14231-15
S19400-2211
S19400-3323
T14231-11
S19400-2671
S19400-1001
T10812-41
S15161-19
T13640-12
S15128-9
S15128-4
10M 1/2W
S19400-3321
68 5W
38J
29
D15,D16,D18,D19,D20,D21,D22,D23,
OCI2
1
R17,R18,R47
3
5
R22,R98,R99,R102,R103
1
R20
S19400-4753
R42,R59,R60,R61
4
R44,R86,R87,R88 4
S16668-3 100pF/100
COMMON
10V
C
B
J
LK
N
D
M
E F G
A H
R3R-300 CONTROL G2173-1
R1
R2
R3
R88
R61
R70
R73
R76
R85
R82
R87 R86
R60 R59
R69 R68
R72 R71
R75 R74
R84 R83
R78 R77 R79
R81 R80
R33
R32
R42
R35
R50
R48
R37
R40
R38
R45
R41
R27
R54
R47
R15
R28
R12
R13
R14
R11
R20
R17
R24
R22
R55
R21
R39
R44
R25
R98
R99
R26
R102
R103
R18
C9
C4
C29 C28 C27
C5
C10
C23 C22 C21
C3
C6
C30
C2
C11
C1
C26
C25
C24
C12
C7
C15
C14
C31
C20
C19
C18
DZ3
DZ9
DZ8 DZ7 DZ6
DZ5
DZ4
D1
D2
D3
D6
D4
D5
D7
D8
D9
D20
D23
D36
D22 D21
D19
D18
D34 D35
D27
D12
D15
D14
D26
D30
D11
D24
D10
D13
D28
D29
D25
D16
D31
D32
D33
DZ1
DZ2
X3
X2
X1
TP3
TP2
TP1
J2
J4 J3 J1
OCI2
R64
R58
R63 R62
R57 R56
R97 R96 R95
R46
R34
R43
R51
R92
R49
R94
R93
R91
R30
R31
R67
R66
R65
R10
R52 R90
R16 R23
R29
R7
R9
R4
R6
R8
R5
SCR2 SCR1 SCR3
QU3
QU2
QU1
Q1 Q2
+15V
Q1, Q2
G-8
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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.