Lincoln Electric LN-25 Service Manual page 85

Semiautomatic wire feeder
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G-10
CONTROL PC BOARD LA YOUT CODES 9812 AND BELOW
Item
D6
X4
C4,C23
CAPACITOR-ALEL,50,25V ,+75/-10%
OCI1
OPTOCOUPLER-PHOTO-Q,30V,4N35
X3
IC-CMOS,INVERTER,SCHMITT,HEX,4584
R22
TRIMMER-MT,1/2W,100K,10%,LINEAR
R11
TRIMMER-MT,1/2W,500,10%,LINEAR
C15
CAPACITOR-CEMO,.022,50V,20%
Q1
Q9
TRANSISTOR & HEAT SINK ASBL Y
Q8
TRANSISTOR & HEAT SINK ASBL Y
D2,D3,D5,D7,D8,
D9,D10,D11,D13,
D14,D16,D17,D18,
D19,D20,D21,D22,
D23,D24,D25,D28,
D29,D32
D1,D4,D27
J4
R2,R72,R86
RESISTOR-WW,5W,3.3K,5%,SQ
C22
CAPACITOR-ALEL,10,25V ,+75/-10%
C7,C30,C31
CAPACITOR-TAEL,1.8,20V,10%
C27,C45
CAPACITOR-TAEL,4.7,35V,10%
C14,C18,C19,C25
CAPACITOR-TAEL,18,15V,10%
C29,C32
CAPACITOR-TAEL,1.0,35V,10%
C16
CAPACITOR-PCF,.0033,200V,10%
C10
CAPACITOR-ALEL,20,50V ,+75/-10%
C21,C24,C44
CAPACITOR-PEF,.001,400V,10%
C11
CAPACITOR-PEF,.0022,400V,10%
C5
CAPACITOR-ALEL,3300,50V ,+30/-10%
C17
CAPACITOR-TAEL,0.33,50V,10%
X1,X2
IC-VOLT REF,ADJ,PRECISION,431I
C3,C6,C12,C20,
C28,C33,C34,C35,
C36,C37,C38,C39,
C40,C41,C42,C43,
C47
CAPACITOR-CD,.02/.022,25V,20%
C1
CAPACITOR-CD,.05,600V,+80/-20%
C13,C46,C48,C49
CAPACITOR-CD,100P,1000V,10%
C26
CAPACITOR-PEF,0.1,400V,10%
R47
DZ2,DZ3,DZ4
ZENER DIODE-1W,16V,5%,1N4745A
DZ1
ZENER DIODE-1W,12V,5%,1N4742A
Q7,Q11
TRANSISTOR-P,T226,0.2A,30V,2N4125
D12
DIODE-AXLDS,3A,600V ,1N5406
R1
B539,B541
CONNECTOR,TAB,QC,VER TICAL,1/4
B500,B512,B555 CONNECTOR,TAB,QC,VER TICAL,3/16
J3
TP1
MOV-150VRMS,45J,14MM,CRIMPED
R13,R14
RESISTOR-WW,5W,4.7K,5%,SQ
NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC
Board repairs will invalidate your factory warranty
not available from Lincoln Electric. This information is provided for reference only
courages board level troubleshooting and repair since it may compromise the quality of the design and
may result in danger to the Machine Operator or
damage to the machine.
DIAGRAMS
Identification
HEAT SINK ASBL Y
IC-CONVERTER,F/V,2907
HEAT SINK ASBL Y
DIODE-AXLDS,1A,400V
DIODE-AXLDS,1A,600V
CONNECTOR-MOLEX,
RESISTOR-WW,7W,0.100,1%
RESISTOR-CC,2W,10,10%
PC BD PLUG ASBL Y
Item
R38
C2,C8,C9
CAPACITOR-ALEL,470,350V ,+30/-20%
J1
J2
R3,R5,R17,R37,R73
R9,R81,R83
R18,R19,R24,
R26,R60,R63,R76*
R16,R61
R27
R54
R4
R91
R10,R52,R64
R45
R69,R74,R77
R33,R62,R66
R51
R6,R31
R15,R20,R21,R29,
R30,R34,R39,R40,
R49,R67,R68,R71,
R79,R80,R82,R89,R90 RESISTOR-MF,1/4W,22.1K,1%
R42,R88
R57
R8
R35,R56,R59,R70,R75
R55
R25,R32
R78
R43
R41
R50,R53,R65
R7,R12,R84,R85,R94
R46
R28,R36,R58
R44,R95
R23
X11
IC-CMOS,SWITCH,ANALOG,QUAD,4066
X5,X6
IC-OP-AMP,QUAD,GEN-PURPOSE,224N
D31
Q15
X10
X7,X8,X9
Q3,Q4,Q5,Q6,
Q10,Q12,Q13
Q14*
TRANSISTOR-N,T226,0.2A,30V,2N4123
Q2
TRANSISTOR-N,T226,0.3A,400V,MPS-A44
R87
NOTE: Individual parts listed are not available from
Lincoln Electric.
Individual Printed Circuit Board Components are
.
Technician. Improper PC board repairs could result in
LN-25
G-10
Identification
RESISTOR-WW,5W,68,5%,SQ
PC BD PLUG ASBL Y
PC BD RECEPTACLE ASBL Y
RESISTOR-MF,1/4W,100,1%
RESISTOR-MF,1/4W,1.00K,1%
RESISTOR-MF,1/4W,10.0K,1%
RESISTOR-MF,1/4W,100K,1%
RESISTOR-MF,1/4W,1.00M,%
RESISTOR-MF,1/4W,102K,1%
RESISTOR-MF,1/4W,10.0,1%
RESISTOR-MF,1/4W,1.30K,1%
RESISTOR-MF,1/4W,13.7K,1%
RESISTOR-MF,1/4W,1.50K,1%
RESISTOR-MF,1/4W,15.0K,1%
RESISTOR-MF,1/4W,150K,1%
RESISTOR-MF,1/4W,16.5K,1%
RESISTOR-MF,1/4W,18.2K,1%
RESISTOR-MF,1/4W,2.43K,1%
RESISTOR-MF,1/4W,267,1%
RESISTOR-MF,1/4W,2.67K,1%
RESISTOR-MF,1/4W,26.7K,1%
RESISTOR-MF,1/4W,2.80K,1%
RESISTOR-MF,1/4W,3.32K,1%
RESISTOR-MF,1/4W,33.2K,1%
RESISTOR-MF,1/4W,3.92K,1%
RESISTOR-MF,1/4W,39.2K,1%
RESISTOR-MF,1/4W,44.2K,1%
RESISTOR-MF,1/4W,4.75K,1%
RESISTOR-MF,1/4W,47.5K,1%
RESISTOR-MF,1/4W,5.62K,1%
RESISTOR-MF,1/4W,6.81K,1%
RESISTOR-MF,1/4W,68.1K,1%
DIODE AND HEAT SINK ASBL Y
SBS-T226,7.5-9.0V,MBS4993
IC-CMOS FLIP-FLOP,ÓDÓ,DUAL
IC-COMPARATOR,QUAD,2901N
RESISTOR-MF,1/4W,7.68K,1%
. Lincoln Electric dis-

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