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DIAGRAMS
G-7 G-7
WELDANPOWER 125
M17578 IDLER PC BOARD BILL OF MATERIALS
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
available from Lincoln Electric. This information is provided for reference only. Lincoln Electric discour-
ages 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 dam-
age to the machine.
Item Description
C1 CAPACITOR-TAEL,39,10V,10%
C2 CAPACITOR-ALEL,200,12/16V/+75/-10%
C3,C13 CAPACITOR-CEMO,0.1,50V,10%
C5,C12 CAPACITOR-TAEL,18,15V,10%
C6,C14 CAPACITOR-ALEL,68,63V,+50/-20%
C7,C9 CAPACITOR-CEMO,.022,50V,20%
C8 CAPACITOR-CD,.05,600V,+80/-20%
C11 CAPACITOR-PEF,0.47,50V,10%
CR1 RELAY-SPDT,12VDC,155OHMS,AG-CDO
D1,D2,D3,D4,D9 DIODE-AXLDS,3A,600V,1N5406
D5,D10,D11,D13 DIODE-AXLDS,1A,400V
D6,D12 DIODE-AXLDS,1A,400V,FR,1N4936
DZ1 ZENER DIODE-1W,8.2V,5%,1N4738A
DZ2,DZ4 ZENER DIODE-1W,15V,5%,1N4744A
DZ3 ZENER DIODE-5W,10V,5%,1N5347B
J1 CONNECTOR,MOLEX,MINI,PCB,10-PIN
J2 CONNECTOR,MOLEX,MINI,PCB,4-PIN
Q1 TRANSISTOR-NMF,T220,18A,200V,IRF640
Q2 TRANSISTOR-N,T220,1A,300V,TIP48
Q3 TRANSISTOR-N,T226,0.5A,40V,2N4401
Q4 TRANSISTOR-NMF,4PDIP,1A,100V,RFD110
R1 RESISTOR-MF,1/4W,681,1%
R2 RESISTOR-MF,1/4W,221K,1%
R3,R5,R23,
R24,R28 RESISTOR-MF,1/4W,10.0K,1%
R4 RESISTOR-MF,1/4W,31.6K,1%
R6 RESISTOR-MF,1/4W,133K,1%
R7,R20 RESISTOR-MF,1/4W,47.5K,1%
R8,R9 RESISTOR-MF,1/4W,5.11K,1%
R10 RESISTOR-MF,1/4W,3.01K,1%
R11 RESISTOR-WW,5W,0.5,5%,SQ
R12 RESISTOR-MF,1/4W,26.7K,1%
R13 RESISTOR-WW,5W,3.3K,5%,SQ
R14 RESISTOR-MF,1/4W,1.50K,1%
R15 THERMISTOR-PTC,.02-0.47 OHMS,0.90A
R16,R17,R26,R27 RESISTOR-MF,1/4W,150,1%
R18 RESISTOR-MF,1/4W,162,1%
R22 RESISTOR-MF,1/4W,51.1K,1%
R25 RESISTOR-MF,1/4W,22.1K,1%
R29 RESISTOR-MF,1/4W,43.2K,1%
R30 RESISTOR-MF,1/4W,4.75K,1%
TP1 MOV-130VRMS,38J,14MM
X1 IC-COMPARATOR,QUAD,2901N