Lincoln Electric SP-250 service manual Toc

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G-6 ELECTRICAL DIAGRAMS G-6

G2252 CONTROL PC BOARD

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Item Identification

W1 . . . . . . . . . . . . . . . .20 AWG UNINSULATED JUMPER C81 . . . . . . . . . . . . . CAPACITOR-ALEL,50,25V,+75/-10% X10 . . . . . . . . IC-CMOS,INVERTER,SCHMITT,HEX,4584 X16 . . . . . . . . . . . . . . . . . . . . . . .VOLTAGE REGULATOR R48 . . . . . . . . . . . . TRIMMER-MT,1/2W,10K,10%,LINEAR C30,C31 . . . . . . . . . . . CAPACITOR-CEMO,22P,100V,5%

C10,C11,C12, . . . . . . CAPACITOR-CEMO,100P,100V,5% C13,C14,C15,C16,C17,C18,C19

C36 . . . . . . . . . . . . . . CAPACITOR-CEMO,2700P,50V,5%

C2,C3,C4,C5,C33, . . . CAPACITOR-CEMO,.022,50V,20% C40,C41,C52,C53,C57,C60,C62,C63,C100,C101,C102, C103,C104,C105,C106,C107,C117

J2 . . . . . . . . . . . . CONNECTOR,PCB,WW,MALE,DIL,1X9 Q30 . . . . . . . . . . . . . . . . . . . . . . . . . . HEAT SINK ASBLY DD1 . . . . . . . . . . . . . . . . . . DIODE & HEAT SINK ASBLY J7,J8 . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,4-PIN J9 . . . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,6-PIN J4 . . . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,8-PIN R61 . . . . . . . . THERMISTOR-PTC,.02-0.47 OHMS,0.90A X15 . . . . . . . . POS VOLTAGE REG & HEAT SINK ASBLY Q24 . . . . . . . . . . . . . TRANSISTOR & HEAT SINK ASBLY Q20 . . . . . . . . . . . . . . TRANSISTOR & HEATSINK ASBLY

D1,D2,D3,D4,D5,D6,D7,D8, . . . . DIODE-AXLDS,1A,400V D21,D22,D23,D24,D33,D34,D40,D41,D50,D51,D52,D53, D54,D60,D61,D62,D70,D71,D72,D73,D74,D75,D76,D77, D78,D79,D80,D82,D83,D85,D86,D87,D90,D91,D92,D93

D9,D10,D11,D12,D13,D14 . . . . DIODE-AXLDS,1A,1000V

L1,L4,L5,L6,L7,L8, CHOKE-330UH,10%,110MA,MOLDED L10,L11,L12,L13,L14

L2,L3 . . . . . . . . CHOKE-390UH,5%,225MA,CONFORMAL R143 . . . . . . . . . . . . . . . . . . RESISTOR-WW,5W,3.3K,5% TP1,TP2 . . . . . . . . . . . . . . . . . . MOV-75VRMS,22J,14MM R70 . . . . . . . . . . . . . . . . . . RESISTOR-CC,1/2W,10M,5% R140,R141 . . . . . . . . . . RESISTOR-WW,7W,0.25,5%,SQ C21,C34 . . . . . . . . . . . . . CAPACITOR-TAEL,4.7,35V,10% C56 . . . . . . . . . . . . . . . . . CAPACITOR-TAEL,39,10V,10% C55,C79 . . . . . . . . . . . . . CAPACITOR-TAEL,18,15V,10% C91,C92 . . . . . . . . . . . . . CAPACITOR-TAEL,1.0,35V,10% C51 . . . . . . . . . . . . . CAPACITOR-ALEL,20,50V,+75/-10% C54 . . . . . . . . . . . . . . . . CAPACITOR-PEF,.001,400V,10%

Item Identification

C61,C64 . . . . . . . . . . . . . CAPACITOR-PCF,0.27,50V,20% C73 . . . . . . . . . . . CAPACITOR-ALEL,3300,50V,+30/-10% X14,X17,X18 . . . . . . IC-VOLT REF,ADJ,PRECISION,431I X22 . . . . . . . . IC-OP-AMP,SINGLE,PRECISION,OP-27GZ

C20,C35,C108, . . . . . .CAPACITOR-CEMO, 0.1, 50V, 10% C109,C110,C111,C112,C113,C114,C115,C116

J3 . . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,12-PIN J5 . . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,14-PIN J6 . . . . . . . . . . . CONNECTOR,MOLEX,MINI,PCB,16-PIN J1 . . . . . . . . . CONNECTOR,PCB,WW,VERTICAL,16-PIN R79 . . . . . . . . . . . . . TRIMMER-ST,1/2W,1K,10%,LINEAR C42 . . . . . . . . . . . . . . . . CAPACITOR-PEF,0.22,100V,10% C70,C75 . . . . . . CAPACITOR-PPEF,0.68,400V,10%,RIGID

C71,C72,C80, . . . CAPACITOR-CD,.0047/.005,1400V,20% C90,C93

R119 . . . . . . . . . . . . . . . . . . RESISTOR-WW,7W,0.25,1% DZ2 . . . . . . . . . . . . ZENER DIODE-1W,16V,5%,1N4745A DZ1 . . . . . . . . . . . . ZENER DIODE-1W,15V,5%,1N4744A DZ7 . . . . . . . . . . . . ZENER DIODE-5W,10V,5%,1N5347B DZ6 . . . . . . . . . . . . ZENER DIODE-1W,6.2V,5%,1N4735A DZ3,DZ4,DZ5 . . . . . ZENER DIODE-1W,18V,5%,1N4746A Q11 . . . . . . . . TRANSISTOR-NMF,T220,15A,60V,15N06E D20 . . . . . . . . . . . . . . DIODE-AXLDS,1A,30V,SCHOTTKY R144,R152 . . . . . . . . . . . . . . . RESISTOR-CC,2W,10,10% TP5 . . . . . . . . . . . . . . . . . . . . MOV-130VRMS,38J,14MM TP6,TP7 . . . . . . . . . . . . . . . . . . MOV-50VRMS,15J,14MM TP4 . . . . . . . . . . . . . . . . . . . . MOV-150VRMS,80J,20MM R74,R153 . . . . . . . . . . . . . RESISTOR-WW,5W,1K,5%,SQ R145,R162,R175 . . . . . . . RESISTOR-WW,5W,50,5%,SQ R57,R58 . . . . . . . . . . . . . . RESISTOR-WW,5W,20,5%,SQ C50 . . . . . . . . . . . . . . CAPACITOR-PEMF,.047,100V,10% C74 . . . . . . . . . . . . . . . . . CAPACITOR-TAEL,39,20V,10% C78 . . . . . . . . . . . CAPACITOR-ALEL,2200,63V,+30/-10%

R14,R17,R20,R30,R31,R32, RESISTOR-MF,1/4W,100,1% R41,R42,R43,R44,R45,R54,R55,R56,R65,R94, R103,R108,R121,R129,R148,R192,R193

R6,R7,R8,R9,R60,R62, . . RESISTOR-MF,1/4W,1.00K,1% R63,R64,R72,R163,R176

R1,R2,R3,R4,R5,R13, . . . RESISTOR-MF,1/4W,10.0K,1% R16,R19,R24,R25,R78,R80,R93,R96,R124,R134

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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