Electrical diagrams, Control board (g2150) – Lincoln Electric SQUARE WAVE TIG 255 SVM100-A User Manual
Page 89
G-3
ELECTRICAL DIAGRAMS
SQUARE WAVE TIG 255
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.
CONTROL BOARD (G2150)
Item
Identification
Item
Identification
X12
IC-VOLT REG,FIXED,3-T,(+),1A,5V
C22,C32
CAPACITOR-CEMO,22P,100V,5%
C51,C52,C53,C54,
CAPACITOR-CEMO,100P,100V,5%
C55,C56,C57,C58,
C59,C60,C82,C83,
C84,C85,C86
C5,C20,C25,C34,C41, CAPACITOR-CEMO,.022,50V,20%
C73,C74,C76,C77
C19,C21
CAPACITOR-CEMO,150P,100V,5%
J7
CONNECTOR,MOLEX,MINI,PCB,4-PIN
J4
CONNECTOR,MOLEX,MINI,PCB,6-PIN
J1
CONNECTOR,MOLEX,MINI,PCB,8-PIN
PTC1,PTC2
THERMISTOR-PTC,56 OHMS,90MA
D1,D2,D3,D4,D5,D6,D7, DIODE-AXLDS,1A,400V
D18,D19,D20,D23,D24,
D25,D30,D34,D37,D38,
D39,D40,D41,D43,D44,
D45,D46,D47,D48,D49,
D50,D51,D52,D53,D54,
D55,D56,D57,D58,D59,
D71,D72,D73,D74,D75,
D76,D77,D78,D79,D80,
D81,D92,D99,D100,D101
L1
CHOKE-330UH,10%,110MA,MOLDED
L2,L3
CHOKE-390UH,5%,225MA,CONFORMAL
C16,C35
CAPACITOR-TAEL,18,15V,10%
C23,C44,C47,C48,C71 CAPACITOR-TAEL,1.0,35V,10%
C43
CAPACITOR-ALEL,20,50V,+75/-10%
C27,C28,C29,C30
CAPACITOR-TAEL,27,35V,10%
OCI1,OCI2,OCI3,
OPTOCOUPLER-PHOTO-Q,70V,
OCI4,OCI5,OCI6*
CNY17-3
X16
IC-VOLT REG,FIXED,3-T,(-),1A,15V
C3,C7,C10,C11,C12,
CAPACITOR-CEMO,0.1,50V,10%
C14,C15,C33,C38,
C45,C62,C69,C70,
C72,C75,C78,C81
J5
CONNECTOR,MOLEX,MINI,PCB,10-PIN
J8
CONNECTOR,MOLEX,MINI,PCB,12-PIN
J6
CONNECTOR,MOLEX,MINI,PCB,14-PIN
DZ1,DZ6,DZ7,DZ10
ZENER DIODE-1W,30V,5%,1N4751A
DZ4,DZ5,DZ8,DZ9
ZENER DIODE-1W,18V,5%,1N4746A
Q1,Q3,Q5,Q8,Q10,
TRANSISTOR-N,T226,0.5A,40V,2N4401
Q11,Q13,Q14,Q16,Q17
Q2,Q4,Q6,Q12
TRANSISTOR-NMF,4PDIP,1A,100V,
RFD110
D42
DIODE-AXLDS,1A,30V,SCHOTTKY
C42
CAPACITOR-ALEL,1000,35V,+30/-20%
R14,R17,R18,R21,R24, RESISTOR-MF,1/4W,100,1%
R26,R109,R154,R155,
R156,R157,R158,R159,
R160,R162,R163,R168,
R169,R170,R171,R182,
R183*
R20,R25,R41,R56,R57, RESISTOR-MF,1/4W,1.00K,1%
R68,R69,R74,R77,R84,
R87,R91,R92,R93,R94,
R112,R113,R114,R115,
R118,R120,R123,R124,
R127,R129,R140,R144,
R214,R225,R226,R227,
R228,R229
R9,R22,R49,R76,R122, RESISTOR-MF,1/4W,10.0K,1%
R125,R128,R172,R187,
R211,R223,R224*
R39,R44,R67,R199,
RESISTOR-MF,1/4W,100K,1%
R222,R236
R38,R54,R55,R71
RESISTOR-MF,1/4W,1.00M,%
R51,R52
RESISTOR-MF,1/4W,150,1%
R72,R85
RESISTOR-MF,1/4W,1.50K,1%
R137
RESISTOR-MF,1/4W,15.0K,1%
R50,R101,R134,R212
RESISTOR-MF,1/4W,2.21K,1%
R27,R63,R142
RESISTOR-MF,1/4W,221K,1%
R12,R23,R64,R106,
RESISTOR-MF,1/4W,267,1%
R107,R108,R181,R184,
R185
R34
RESISTOR-MF,1/4W,2.67K,1%
R138,R139
RESISTOR-MF,1/4W,26.7,1%
R88,R143,R146,R147, RESISTOR-MF,1/4W,3.32K,1%
R148,R149,R150,R151,
R152,R153,R166,R167
R141
RESISTOR-MF,1/4W,33.2K,1%
R73,R75,R82,R83,
RESISTOR-MF,1/4W,475,1%
R102,R103,R104*
R42,R48,R53,R66,
RESISTOR-MF,1/4W,4.75K,1%
R79,R81,R97,R130,
R131,R132,R201,R202,
R203,R204,R205,R206,
R207,R208,R209,R210,
R213,R215,R216,R217,
R218
R28,R29,R30,R31,
RESISTOR-MF,1/4W,47.5K,1%
R32,R40
R16,R19,R43,R65,
RESISTOR-MF,1/4W,475K,1%
R70,R116,R136,R200
CONT’D ON REVERSE PAGE