Lincoln Electric LN-25 Service Manual page 89

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CONTACTOR PC BOARD LA YOUT CODES 9812 AND BELOW
Item
C2 CAPACITOR-PEF,.0047,400V,10%
C8,C13 CAPACITOR-CEMO,2700P,50V,5%
C6,C7,C9 CAPACITOR-CEMO,.022,50V,20%
D4,D5,D6,D8
B1,B2 CONNECTOR,BEAD PIN,PCB,MALE,TIN
J6
R1 RESISTOR-WW,5W,3.3K,5%,SQ
C3 CAPACITOR-TAEL,1.0,35V,10%
C4 CAPACITOR-PEF,.001,400V,10%
C5 CAPACITOR-ALEL,3300,50V ,+30/-10%
X1,X2 IC-VOLT REF,ADJ,PRECISION,431I
C10 CAPACITOR-CEMO,0.1,50V,10%
R19
R30
DZ1,DZ2 ZENER DIODE-1W,16V,5%,1N4745A
Q1 TRANSISTOR-N,T220,5A,450V,MJE16002
Q8 TRANSISTOR-NMF,T247,20A,500V,RFP460
D1 DIODE-AXLDS,3A,600V ,1N5406
R31,R32
C1 CAPACITOR-ALEL,5600,35V ,+30/-10%
R3,R11,R29
R16 RESISTOR-MF,1/4W,10.0K,1%
R14 RESISTOR-MF,1/4W,100K,1%
R4,R24 RESISTOR-MF,1/4W,15.0K,1%
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
DIODE-AXLDS,1A,400V
CONNECTOR-MOLEX,
RESISTOR-WW,1W,1.0,1%
RESISTOR-WW,7W,2.7,5%
RESISTOR-WW,5W,2.7,5%
RESISTOR-MF,1/4W,100,1%
Item
R20
R5
R18,R23
R6,R7,R9,R13,R25,
R26,R28,R34*
R21,R22
R2
R15
R10,R17,R27
Q5 TRANSISTOR-NMF,T220,8A,500V,IRF840
D2
C11
D3
X4 IC-CMOS,MULTIVBRTR,MONO,DUAL,4538
J7 CONNECTOR,MOLEX,MINI,PCB,4-PIN
X3,X5
Q2 TRANSISTOR-N,T226,0.3A,400V,MPS-A44
Q3,Q6 TRANSISTOR-N,T226,0.5A,40V,2N4401
Q4,Q7 TRANSISTOR-P,T226,0.5A,40V,2N4403
R12,R35
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
Identification
RESISTOR-MF,1/4W,150K,1%
RESISTOR-MF,1/4W,1.82K,1%
RESISTOR-MF,1/4W,2.21K,1%
RESISTOR-MF,1/4W,22.1K,1%
RESISTOR-MF,1/4W,2.80K,1%
RESISTOR-MF,1/4W,33.2,1%
RESISTOR-MF,1/4W,511,1%
RESISTOR-MF,1/4W,5.62K,1%
DIODE-AXLDS,1A,600V
CAPACITOR-TAEL,1.8,20V,10%
DIODE-AXLDS,1A,1000V ,FR,818
IC-COMPARATOR,QUAD,2901N
RESISTOR-MF,1/4W,3.32K,1%
. Lincoln Electric dis-
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