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NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-
vided 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.
ELECTRICAL DIAGRAMS
G-25
V300 PRO
PC BOARD ASSEMBLY - POWER - (L8033-7)
G-25
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Item Identification
X1 REGULATOR ASBLY
C2,C7,C11 .022/50
J7 CONNECTOR
X5 VOLT. REG. & HEAT SINK ASBLY.
C3 150/50
D1,D2,D3,D4,D5,D8,D9, 1N4004
D10,D11,D12,D13
C6 1.8/20
C4 4.7/35
C5 39uF/20VDC
C1 3300/50
OCI1 OPTO ISOLATOR
X2,X3 8 PIN I.C. (SS)
C8,C9,C12,C13 .1/50
J6 HEADER
C10 500/50
DZ1 1N4744A
DZ2,DZ3 1N4746A
Q1,Q3 3A/60V. TRANSISTOR
Q2,Q4 3A ,60V. PNP TRANSISTOR
Q5 3.5A. 60V. MOSFET (SS)
D6,D7 1N5822 SCHOTTKY BARRIER DIODE
R1 .0 OHM, 5W RESISTOR
Item Identification
TP1,TP2 15J
R11,R19,R26,R27 10K 1/4W
R5,R6,R10,R22 100K 1/4W
R4 1.5K 1/4W
R14,R41 15K 1/4W
R9 1150K 1/4W
R21 2.21K 1/4W
R3 243 1/4W
R7,R8,R24 267 1/4W
R2 2.67K 1/4W
R18 26.7K 1/4W
R20 267K 1/4W
R13,R15,R16,R17 33.2K 1/4W
R23 4.75K
R12 475K 1/4W
R25 5.11K 1/4W
X4 LM224 OP-AMP
J14 HEADER
Q40 2N4401
R42,R43 100 1/4W
DZ4,DZ5 1N4742A
R28,R29 10 1/4W
D14 1N4936
Item Identification
R44 THERMISTOR
NOTE: Individual parts listed are not available from Lincoln Electric.