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G-7
ELECTRICAL DIAGRAMS
SP-100
NOTE: Lincoln Electric assumes no responsibility for liabilities 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.
Item IdentificationItem Identification
CONTROL P.C. BOARD G2314
SCR1, SCR2 SCR 81 HEATSINK ASBLY
X4 C-VOLT REG, FIXED, 3-T, (+),1A, 15V
C4, C9, C11, C12, C13, CAPACITOR-CEMO, .022, 50V, 20%
C14, C16, C20, C21,
C24, C26
J1 CONNECTOR, MOLEX, MINI, PCB,
6-PIN
C5 CAPACITOR-ALEL, 150, 50V, +150/
–10%
D1, D2, D3, D4, D5, D6, DIODE-AXLDS, 1A, 400V
D7, D8, D9, D11 , D12,
D13, D14, D17, D18,
D19, D20, D21
R32, R33 RESISTOR-WW, 15W, 80,5%, SQ
C19 CAPACITOR-TAEL, 1.8, 20V, 10%
C6, C17 CAPACITOR-TAEL, 4.7, 35V, 10%
C15 CAPACITOR-TAEL, 18,15V, 10%
C8, C10, C18 CAPACITOR-TAEL, 1.0, 35V, 10%
C23 CAPACITOR-ALEL, 3300, 50V, +30/-10%
OCI1 OCI2 OPTOCOUPLER-TRIAC DRIVER, 3023
TRI1 TRIAC-T220, 6A, 400V, 2500D
J2 CONNECTOR, MOLEX, MINI, PCB,
10-PIN
C7 CAPACITOR-PEF, 0.1,100V, 10%
C22 CAPACITOR-PEF, 0.22, 100V, 10%
C1, C25 CAPACITOR-CD, .0047/.005, 1400V,
20%
C2 C3 C27 CAPACITOR-PEF, 0.1, 400V, 10%
DZ3 ZENER DIODE-1W, 16V, 5%,1N4745A
DZ1 ZENER DIODE-1W, 10V, 5%,1N4740A
DZ4 ZENER DIODE-1W, 43V, 5%,1N4755A
DZ2 ZENER DIODE-1W, 5.1V, 5%,1N4733A
Q2, Q3, Q4, Q5 TRANSISTOR-N, T226, 0.5A, 40V,
2N4401
D15, D16 DIODE-AXLDS, 3A, 200V, 1N5402
D10 DIODE-AXLDS, 0.15A, 75V, 1N914
B31 A, B531 CONNECTOR, TAB, QC, VERTICAL,
1/4
B7, B32 CONNECTOR, TAB, QC, VERTICAL,
3/16
R69, R72 RESISTOR-WW, 5W, 0.5,5%, SQ
R5 RESISTOR-MF, 1/4W, 100, 1%
R2, R4, R8, R26, R27, RESISTOR-MF, 1/4W, 1.00K, 1%
R41, R48, R51, R55,
R58, R70
R50, R57, R66, R68, RESISTOR-MF, 1/4W, 10.0K, 1%
R71, R73, R74
R42, R52, R53, R54, RESISTOR-MF, 1/4W, 100K, 1%
R55
R43 RESISTOR-MF, 1/4W, 1.00M, %
R15, R16, R18 RESISTOR-MF, 1/4W, 1.30K, 1%
R3 RESISTOR-MF, 1/4W, 150,1%
R36, R63, R64, R67 RESISTOR-MF, 1/4W, 15.0K, 1%
R45 RESISTOR-MF, 1/4W, 18.2K, 1%
R28, R31, R47, R49 RESISTOR-MF, 1/4W, 2.21 K, 1%
R12, R38, R39, R60, RESISTOR-MF, 1/4W, 22.1K, 1%
R61
R75 RESISTOR-MF, 1/4W, 267,1 %
R22 RESISTOR-MF, 1/4W, 267K, 1%
R46, R78, R79, R80 RESISTOR-MF, 1/4W, 3.32K, 1%
R21 RESISTOR-MF, 1/4W, 33.2K, 1%
R35 RESISTOR-MF, 1/4W, 39.2K, 1%
R44 RESISTOR-MF, 1/4W, 392K, 1%
R11 RESISTOR-MF, 1/4W, 4.75K, 1%
R10 RESISTOR-MF, 1/4W, 47.5K, 1%
R62 RESISTOR-MF, 1/4W, 47.5,1%
R23, R24 RESISTOR-MF, 1/4W, 562,1%
R17, R25, R29, R30 RESISTOR-MF, 1/4W, 56.2K, 1%
R76 RESISTOR-MF, 1 /4W, 681 ,1 %
R19, R65 RESISTOR-MF, 1/4W, 6.81K, 1%
R14, R20 RESISTOR-MF, 1/4W, 68.1K, 1%
R13 RESISTOR-MF, 1/4W, 82.5K, 1%
Q7 TRANSISTOR-PMF, T220, 6A, 100V,
IRF9520
X1 , X2, X3 C-OP-AMP, OUAD, GEN-PURPOSE,
224N
Q1, Q6 TRANSISTOR-N, T226, 0.5A, 300V,
MPS-A42
R37, R83 RESISTOR-MF, 1/4W, 2.00K, 1%
R34, R81, R82 RESISTOR-MF, 1/4W, 3.01K, 1%
R56 TRIMMER-ST, 1/2W, 10K, 10%,
LINEAR
R6 RESISTOR-WW, 5W, 25, 5%, SQ
R1 RESISTOR-WW, 5W, 150, 5%, SQ