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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 pro-
vided 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.
ELECTRICAL DIAGRAMS
G-12
PROCUT 55
PC BOARD ASSEMBLY-POWER (G3172-1)
C1,C5,C8,C11 4 S16668-6 4700pF/50
C2,C6,C9,C12 4 S20500-4 .0047/1000V
C3,C4,C14 3 S16668-5 .022/50
C7 1 S13490-93 27/35
C10 1 S16668-9 150pF/100
C13 1 S13490-130 .27/50
CR1 1 S14293-18 DPST RELAY
D1,D2,D3,D4,D5,D6,D7,D12 10 T12199-1 1N4004
D13,D14
D8,D9,D10,D11 4 T12705-44 DIODE 1000V/1A
DZ1,DZ5,DZ9,DZ12 4 T12702-40 1N4735
DZ2,DZ3,DZ6,DZ7,DZ8,DZ10 9 T12702-29 1N4744A
DZ11,DZ13,DZ14
DZ4 1 T12702-19 1N4742A
J10 1 S20351-6 HEADER
OCI1,OCI2 2 S15000-22 OPTO ISOLATOR
Q1 1 T12704-75 FET (SS)
Q2 1 T12704-73 IC PKG MOSFET (SS)
R1,R6,R20,R25,R41,R46,R62 12 S19400-10R0 10 1/4W
R67,R79,R80,R81,R82
R2,R3,R4,R5,R21,R22,R23 17 S19400-1001 1K 1/4W
R24,R42,R43,R44,R45,R60
R7,R8,R26,R27,R47,R48,R68 8 T14648-21 2.7 OHM 5W
R69
R10,R11,R12 3 T14649-4 100 10W
R13,R14,R15,R16,R34,R35 10 S19400-1503 150K 1/4W
R50,R51,R83,R86
R17 1 S19400-1000 100 1/4W
R18,R77 2 S19400-1821 1.82K 1/4W
R19 1 S19400-2673 267K 1/4W
R28 1 T10812-41 10K 1/2W TRIMMER
R29,R30,R31,R32,R71,R72 8 T14648-12 1500 OHM 5 WATT RESISTOR
R73,R74
R33,R38,R58 3 S19400-3321 3.32K 1/4W
R36,R52,R89,R90 4 S19400-6191 6.19K 1/4W
R37,R55,R91,R92 4 S19400-1502 15K 1/4W
R39,R53 2 S19400-1652 16.5K 1/4W
R40,R56,R84,R87 4 S19400-3323 332K 1/4W
R54 1 S19400-1372 13.7K 1/4W
R57,R59,R85,R88 4 S19400-1002 10K 1/4W
R61 1 S19400-2213 221K 1/4W
R75 1 S19400-5620 562 1/4W
R76,R98 2 S19400-2801 2.8K 1/4W
R78 1 S19400-2001 2.0K 1/4W
R93 1 S19400-4751 4.75K
R94 1 S19400-4752 47.5K 1/4W
R95,R96 2 S19400-2211 2.21K 1/4W
R97 1 T12300-79 1 WATT 1 OHM 1% RESISTOR
T1 1 S13000-46 TRANSFORMER
X1 1 S15128-10 VOLTAGE REF.
X2 1 S15128-4 LM224 OP-AMP
X3 1 S15128-18 QUAD-OP AMP
ITEM
REQ'D
PART NO
IDENTIFICATION
R63, R64,R65,R66
PRO-CUT POWER
R82
R81
R67
R46
R75
R76
R77
R18
R36
R40
R39
R52
R53
R60
R66
R65
R64
R63
R62
R61
R59
R58
R57
R56
R55
R51 R50
R45
R44
R43
R42
R41
R37
R35
R34
R24
R23
R21
R19
R3
R2
R1
R17
R16 R15 R14 R13
R5
R22
R4
R20
R6
R25
R79
R80
D11
D10
D9
D8
C2
C6
C9
C12
C11
C8
C5
C1
C3
C4
C7
DZ14
DZ13
DZ12
DZ11
DZ10
DZ9
DZ7
DZ6
DZ5
DZ4
DZ3
DZ2
DZ1
D7
D5
D4
D3
D2
X2
X1 OCI1
OCI2
B209
R12
R11
R10
R69
R48
R47
R27
R26
R8 R7
R74
R73
R72
R71
R32
R31
R30
R29
R68
B207 B202
B203 B206
Q1
T1
A2
A1
G3172-1
CR1
C13
C14
D12
Q2
R83
R84
R85
R86
R87
R88
R89
R91
R92
R93
R94
R95
R96
R97
X3
J10
C10
DZ8
D1
D6
R28
R33
R38
R54
R78
R90
D14
D13
R98
B205
B208
B201
B204
G-12
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