Lincoln Electric SP-250 service manual Identification

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G-2 ELECTRICAL DIAGRAMS G-2

G1992 CONTROL PC BOARD

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Item Identification

C45 . . . . . . . . . . . . . . .CAPACITOR-PEMF,.047,100V,10% C21 . . . . . . . . . . . . . . . . .CAPACITOR-TAEL,39,20V,10% C16 . . . . . . . . . . . .CAPACITOR-ALEL,2200,63V,+30/-10% C30,C47,C95 . . . . . . . . . .CAPACITOR-TAEL,4.7,35V,10% C15 . . . . . . . . . . . . . . . . .CAPACITOR-TAEL,39,10V,10% C14,C20 . . . . . . . . . . . . . .CAPACITOR-TAEL,18,15V,10% C39,C40 . . . . . . . . . . . . .CAPACITOR-TAEL,1.0,35V,10% C25 . . . . . . . . . . . . .CAPACITOR-ALEL,6,150V,+50/-10% C55 . . . . . . . . . . . . .CAPACITOR-ALEL,20,50V,+75/-10% C13 . . . . . . . . . . . . . . . .CAPACITOR-PEF,.001,400V,10% C18 . . . . . . . . . . . . .CAPACITOR-ALEL,50,25V,+75/-10% C24,C26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27/50 C19 . . . . . . . . . . . .CAPACITOR-ALEL,3300,50V,+30/-10% OCI2,OCI3 OPTOCOUPLER-PHOTO-SCR,400V,MCS2401 OCI1 . . . . . . . . . . .OPTOCOUPLER-PHOTO-Q,30V,4N35 X10 . . . . . . . . .IC-CMOS,INVERTER,SCHMITT,HEX,4584 X14,X17,X18 . . . . . . .IC-VOLTREF,ADJ,PRECISION,431I X16 . . . . . . . . . . . . . . . .IC-VOLTREG,FIXED,3-T,(-),1A,5V R3 . . . . . . . . . . . . .TRIMMER-MT,1/2W,10K,10%,LINEAR R100 . . . . . . . . .RESISTOR-NETWORK,100,8-RESISTOR C6,C8 . . . . . . . . . . . . . .CAPACITOR-CEMO,22P,100V,5%

C11,C32,C33,C34, . . . . .CAPACITOR-CEMO,0.1,50V,10% C35,C36,C37,C38,C51,C52,C77,C78

C81,C82,C83,C846, . .CAPACITOR-CEMO,100P,100V,5% C85,C8,C87,C88,C90,C91

C17 . . . . . . . . . . . . . . .CAPACITOR-CEMO,2700P,50V,5%

C1,C2,C3,C4,C5,C7, . .CAPACITOR-CEMO,.022,50V,20% C9,C10,C27,C28,C31,C43,C44,C48,C49,C50,C56

J2 . . . . . . . . . . . . .CONNECTOR,PCB,WW,MALE,DIL,1X9 Q12 . . . . . . . . . . . . . . . . . . . . . . . . . . .HEATSINK ASBLY DD1 . . . . . . . . . .MULTIPLE DIODE & HEAT SINK ASBLY J9 . . . . . . . . . . . .CONNECTOR,MOLEX,MINI,PCB,10-PIN J3 . . . . . . . . . . . .CONNECTOR,MOLEX,MINI,PCB,14-PIN J5,J7,J8 . . . . . . . .CONNECTOR,MOLEX,MINI,PCB,4-PIN J6 . . . . . . . . . . . . .CONNECTOR,MOLEX,MINI,PCB,6-PIN

J4 . . . . . . . . . . . . .CONNECTOR,MOLEX,MINI,PCB,8-PIN R103 . . . . . . . .THERMISTOR-PTC,.02-0.47 OHMS,0.90A X15 . . . . . . . . .POS VOLTAGE REG & HEAT SINK ASBLY Q11 . . . . . . . . . . . . . .TRANSISTOR & HEAT SINK ASBLY J1 . . . . . . . . . .CONNECTOR,PCB,WW,VERTICAL,16-PIN R138 . . . . . . . . . . . . .TRIMMER-ST,1/2W,1K,10%,LINEAR C29 . . . . . . . . . . . . . . . .CAPACITOR-PEF,0.22,100V,10% C22,C23 . . . . . .CAPACITOR-PPEF,0.68,400V,10%,RIGID

Item Identification

C79,C80,C92, . . .CAPACITOR-CD,.0047/.005,1400V,20% C93,C94

D1,D2,D24,D25,D26,D27, . . . . . .DIODE-AXLDS,1A,400V D28,D29,D30,D31,D32,D34,D35,D37,D38,D39,D40,D41, D42,D43,D44,D45,D46,D47,D48,D49,D50,D51,D52,D53, D54,D55,D56,D57,D63,D65,D66,D67,D68,D69,D70,D71, D72,D73,D75,D76

D58,D59,D60,D61,D62,D64 . . . .DIODE-AXLDS,1A,1000V L3,L4,L5,L6,L7 . . . .CHOKE-330UH,10%,110MA,MOLDED L1,L2 . . . . . . . .CHOKE-390UH,5%,225MA,CONFORMAL R40 . . . . . . . . . . . . . . . . . . .RESISTOR-WW,7W,0.25,1% DZ5 . . . . . . . . . . . . .ZENER DIODE-1W,16V,5%,1N4745A DZ4 . . . . . . . . . . . . .ZENER DIODE-1W,15V,5%,1N4744A DZ3 . . . . . . . . . . . . .ZENER DIODE-5W,10V,5%,1N5347B DZ7 . . . . . . . . . . . .ZENER DIODE-1W,6.2V,5%,1N4735A DZ1,DZ2,DZ6 . . . . .ZENER DIODE-1W,18V,5%,1N4746A Q9,Q16 . . . . . . . .TRANSISTOR-P,T226,0.2A,30V,2N4125 Q17 . . . . . . . .TRANSISTOR-NMF,T220,15A,60V,15N06E D20 . . . . . . . . . . . . . .DIODE-AXLDS,1A,30V,SCHOTTKY R66 . . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,1K,2% R35 . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,2.7K,2% R87,R94 . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,330,2% R123 . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,6.8K,2% R22,R70 . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,3.9K,2% R47 . . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,3K,2% R121 . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,27K,2%

R5,R6,R7,R30,R75,R99, . . . .RESISTOR-MF,1/2W,100,2% R113,R114,R115,R120

R37,R122 . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,750,2% R52,R57 . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,1.8K,2% R118 . . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,68,2% R89,R90 . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,270,2% R31 . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,1.5K,2% R62 . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,10K,2% R1 . . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,18K,2% R86,R92 . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,15,2% R51,R56 . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,56K,2% R71 . . . . . . . . . . . . . . . . . . .RESISTOR-MF,1/2W,470,2% R48,R50 . . . . . . . . . . . . . . . . .RESISTOR-CC,2W,10,10% R43 . . . . . . . . . . . . . . . . . . .RESISTOR-WW,5W,3.3K,5% TP3,TP5 . . . . . . . . . . . . . . . . . .MOV-50VRMS,15J,14MM TP1,TP2 . . . . . . . . . . . . . . . . . .MOV-75VRMS,22J,14MM R106 . . . . . . . . . . . . . . . . . . . .RESISTOR-MF 102K 1/4W R49,R55,R67,R69,R139 . . . . . .RESISTOR-MF 10K 1/4W

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NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshoot- ing. 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.

IDEALARC SP-250