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G-7
ELECTRICAL DIAGRAMS
POWER MIG 255
CONTROL PC BOARD ASSEMBLY - (G3521-1)
Ch’ge. Sht. No.
3521-1
XE-RW
A
POWER MIG 255
CONTROL P.C. BOARD ASSEMBLY
C.S./
FULL
3521-1
12-18-98
G2803-1
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
DR DATE CHK
REF.
SUBJECT
SUP’S’D’G
SHT.
NO.
G
G
5.80
.20
3-12-99
7-9-99H
7-28-2000J
10-5-2001C
6.00
~.04
0
0
.20 3.20 8.80
9.00
~.04
ITEM REQ’D PART NO. IDENTIFICATION
XXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXX
XXXXXXXXXXXXX
XXX
X1
J1
J2
J3
J5
J6
J8
R74
R71
C24
C25
R72
R73
R83
D26
C29
D27
R75
R70
D21
D22
C22
X3
R69
R68
C23
R77
R76
R78
C46
R98 D33
D35
R101
L2
L1
R8
D3
D1
C1
R6
C2
R4
R5
R42
D31
D2
C44
R1
R2
R87
R92
C31
R91
R86 C30
R10
R11
R9
D4
D6
R12
D7
D5
Q7
C50
Q10
R54
C27
X12
C28
DZ1
D15
R55
R56
C16
DZ2
R52
R51
X10
X11
D14
R49
R50
R48
R53
Q5
Q4
D25
R81
R82
TP4
TP3
C35
C19
C18
DZ3
R105
X8
C7
C48
D13
R33
D12
R34
R40
DZ4
R107
D36
Q8
Q6
R106
Q9
Q3
R104
R32
X5
R28
R29
C8
R39
X9
C49
R36
R102
R103
R57
C15
C17
R47
R37
X4
R38
R35
C9
TP1
TP2
C5
C6
D10
D8
R27
R15
D9
C3
R14
R23
D11
C4
R94
R93
Q1
Q2
R24
R80
R20
R18
R60
R65
C32
C34
C33
D16
D29
X6
R61
D17
D18
R63
L3
L4
R67
R64
C20
R58
D20
D19
R62
R13
R22
C41
C36
C37
C40
C38
C39
X7
D28
R41
D23
D24
R79
R99
D34
R100
R95
C43
R90
R84
R43
R45
R44
X2
C10
C14
C54
TP7
C51
TRI1
C52
R109
R108
C53
Q11
R111
R110
C11
R46
C45
R97
R96
D30
D32
R31
R30
R19
R21
CONTROL G3521-1
R112
R113
C55
C56
C57
C12
C13
C47
OCI1
OCI2
R7
R3
Y1
C58
R116
R115
R25
R114
C26
R26
R117
J4
D37
R66
R59
R88
R89
OCI3
C1,C2,C8,C9,C14,C20,C29
C36,C37,C38,C39,C43,C44
C48,C52,C53,C55,C56
C3,C4,C11
C5,C6,C18,C19,C35,C51,C54
C7
C10,C22,C23,C24,C25,C30
C31,C32,C33,C34,C40,C41
C45,C46,C57,C58
C12,C13
C15
C16
C17,C28
C26
C27
C47
C49
C50
C59
D1,D2,D3,D31
D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,
D15,D16,D17,D18,D19,D20,D21,D22,D24
D25,D26,D27,D28,D29,D30
D32,D33,D34,D35,D36
D23,D37
DZ1
DZ2,DZ3,DZ4
J1
J2
J3
J4
J5
J6
J8
L1,L2,L3,L4
OCI1,OCI2
OCI3
Q1,Q2,Q3,Q6,Q11
Q4
Q5,Q9
Q7,Q10
Q8
R1,R2,R6,R41,R42,R65,R75
R79,R84,R112,R113
R3,R7,R25,R26,R114,R117
R4,R51
R5,R9,R12,R30,R35,R45,R70
R90
R8,R115
R10,R11,R62,R63,R76,R77
R78,R82,R95,R105
R13,R22,R93,R94
R14,R15,R23,R27
R18,R20,R24,R80
R19,R21,R58,R83
R28,R46,R61
R29,R100,R110
R31,R106
R32
R33,R37,R38
R34,R40
R36
R39,R68,R71,R72,R91,R92
R111
R43
R44,R109
R47
R48
R49,R50
R52,R98
R53
R54
R55,R56
R57,R108
R59,R66,R69,R73,R74,R86,R87
R60
R64,R67
R81
R88,R89
R96,R103
R97
R99
R101,R102
R104
R107
R116
TP1,TP2
TP3,TP4
TP7
TRI1
X1
X2
X3
X4,X5
X6
X7
X8
X9
X10,X11
X12
Y1
18
3
7
1
16
2
1
1
2
1
1
1
1
1
1
4
31
2
1
3
1
1
1
1
1
1
1
4
2
1
5
1
2
2
1
11
6
2
8
2
10
4
4
4
4
3
3
2
1
3
2
1
7
1
2
1
1
2
2
1
1
2
2
7
1
2
1
2
2
1
1
2
1
1
1
2
2
1
1
1
1
1
2
1
1
1
1
2
1
1
1.0/35
20/50
22pF/100
39/10
3300/50
18/15
2200/63V
820pF/50
0.27/63V
1N4007
1N4004
1N5818
1N4735
1N4746A
HEADER
HEADER
HEADER
HEADER,VERTICAL
HEADER
HEADER
HEADER
330uH
OPTOCOUPLER,TRIACDRV,RANDOM,800V
2N4401
HEATSINK ASBLY
NPN TRANSISTOR
TRANSISTOR,NMF,T220,45A,100V(SS)
2N4403
120 2.5W
15K 1/4W
4.75K
4.75K 7/16W
1.21K 1/4W
1.21K 1/4W
681 1/4W
562 1/4W
2.21K 1/4W
6.81K 1/4W
5.62K 1/4W
26.7K 1/4W
22.1K 1/4W
2.67K 1/4W
3.01K 1/4W
5.11K 1/4W
267 1/4W
24.3K 1/4W
511 1/4W
16.2K 1/4W
47.5K 1/4W
16.5K 1/4W
13.7K 1/4W
750 1/4W
475 1/4W
28.0K 1/4W
15J
20J
MOV,120J
T2500D
IC,S8054HN,CMOS,UNDERVOT-SENSING(SS)
14 PINI.C.(SS)
IC,SWITCH,LO-SIDE(SS)
MC14584(SS)
+5V REG.
.022/50
.1/50
.0047 OR .005/1400
ROM ASSEMBLY (SS)
S16668-5
S13490-42
T11577-52
S13490-73
S16668-11
S16668-1
S13490-30
S13490-92
S13490-39
T11577-28
S13490-118
S16668-7
S13490-76
S13490-102
S24833-1
T12199-2
T12199-1
T12705-23
T12702-40
T12702-45
S18248-8
S18248-14
S18248-12
S24020-10
S18248-16
S18248-6
S18248-2T
T12218-7
S15000-30
S15000-31
T12704-68
S18105-4
T12704-35
T12704-88
T12704-69
S19400-1002
S24002-1200
S19400-1502
S19400-4751
S19400-1211
S19400-1000
S19400-6810
S19400-15R0
S19400-5620
S19400-2211
S19400-6811
S19400-1501
S19400-5621
S19400-2672
S19400-2212
S19400-33R2
S19400-2671
S19400-3321
S19400-1004
S19400-1001
S19400-1301
S19400-2801
T14648-22
S19400-3011
S19400-5111
T12300-75
S19400-26R7
S19400-2670
S19400-4422
S19400-2432
S19400-5110
T14648-5
S19400-1622
S19400-4752
T14648-19
S19400-1652
S19400-1372
S19400-7500
S19400-4750
S19400-2802
T13640-15
T13640-9
T13640-18
S15161-27
S24392-4
M15102-3
S17900-8
S15128-11
S15128-16
S23060-1
S15018-4
S15018-6
S15128-10
S15128-5
S16665-5
.25 OHM, 7W RESISTOR
.047/100
.001/400
.22/100
OPTOCOUPLER TRIAC DRIVER 800V
10K 1/4W
100 1/4W
15 1/4W
1.5K 1/4W
33.2 1/4W
3.32K 1/4W
1M 1/4W
1K 1/4W
1.3K 1/4W
2.8K 1/4W
50 5W
26.7 1/4W
44.2K 1/4W
3.3K 5W
1K 5W
14 PIN QUAD COMPARATOR
IC,LT1014,LINEAR INTEGRATED CIRCUIT
DIGITAL INTEGRATED CIRCUIT(SS)
IC,431,VOLTAGE REF.
8.0 MHZ
11-16-2001D
G-7
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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.