G-25

 

 

ELECTRICAL DIAGRAMS

 

G-25

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PC BOARD ASSEMBLY - POWER - (L8033-7)

 

 

 

 

 

 

 

 

￿￿￿￿￿￿￿

 

￿￿￿￿￿￿￿￿￿￿￿

 

 

 

 

 

 

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to Section

to Master

 

 

 

 

Item

Identification

Item

Identification

 

Item

Identification

X1

REGULATOR ASBLY

TP1,TP2

15J

 

R44

THERMISTOR

Return

Return

C2,C7,C11

.022/50

R11,R19,R26,R27

10K 1/4W

 

 

 

J7

CONNECTOR

R5,R6,R10,R22

100K 1/4W

 

 

 

X5

VOLT. REG. & HEAT SINK ASBLY.

R4

1.5K 1/4W

 

NOTE: Individual parts listed are not available from Lincoln Electric.

C3

150/50

R14,R41

15K 1/4W

 

 

 

 

 

 

 

 

 

 

 

D1,D2,D3,D4,D5,D8,D9,

1N4004

R9

1150K 1/4W

 

 

 

 

 

D10,D11,D12,D13

 

R21

2.21K 1/4W

 

 

 

 

 

C6

1.8/20

R3

243 1/4W

 

 

 

 

 

C4

4.7/35

R7,R8,R24

267 1/4W

 

 

 

 

 

C5

39uF/20VDC

R2

2.67K 1/4W

 

 

 

 

 

C1

3300/50

R18

26.7K 1/4W

 

 

 

 

 

OCI1

OPTO ISOLATOR

R20

267K 1/4W

 

 

 

 

 

X2,X3

8 PIN I.C. (SS)

R13,R15,R16,R17

33.2K 1/4W

 

 

 

TOC

TOC

C8,C9,C12,C13

.1/50

R23

4.75K

 

 

 

J6

HEADER

R12

475K 1/4W

 

 

 

C10

500/50

R25

5.11K 1/4W

 

 

 

DZ1

1N4744A

X4

LM224 OP-AMP

 

 

 

Section

Master

 

 

 

DZ2,DZ3

1N4746A

J14

HEADER

 

 

 

Q1,Q3

3A/60V. TRANSISTOR

Q40

2N4401

 

 

 

Q2,Q4

3A ,60V. PNP TRANSISTOR

R42,R43

100 1/4W

 

 

 

Q5

3.5A. 60V. MOSFET (SS)

DZ4,DZ5

1N4742A

 

 

 

to

to

 

 

 

D6,D7

1N5822 SCHOTTKY BARRIER DIODE

R28,R29

10 1/4W

 

 

 

Return

Return

 

 

 

R1

.0 OHM, 5W RESISTOR

D14

1N4936

 

 

 

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.

 

 

 

 

V300 PRO

 

 

 

 

 

 

 

 

Page 117
Image 117
Lincoln Electric SVM105-B service manual PC Board Assembly Power L8033-7, VOLT. REG. & Heat Sink Asbly

SVM105-B specifications

The Lincoln Electric SVM105-B is a state-of-the-art welding machine that represents a leap forward in welding technology, designed for both professionals and enthusiasts in the welding industry. This versatile machine combines robust performance with user-friendly features, making it suitable for a wide range of welding applications.

One of the key features of the SVM105-B is its advanced inverter technology. This allows for a lightweight design without compromising on power output. The inverter technology ensures a stable arc and precise control, enabling consistent weld quality across various materials, including mild steel, stainless steel, and aluminum. This feature is particularly beneficial for users who demand exceptional performance in both thin and thick materials.

The SVM105-B also boasts an impressive output range, typically between 10A to 105A, allowing for adaptability to different welding tasks. Its ability to seamlessly switch between DC and AC modes makes it an ideal choice for professionals working in diverse environments, facilitating operations such as TIG and stick welding. This versatility is further enhanced by its compatibility with various electrode types, ensuring a more efficient and effective welding process.

User safety and comfort have not been overlooked in the design of the SVM105-B. Equipped with an efficient cooling system, this machine effectively manages heat during prolonged use, ensuring durability and longevity. Additionally, its intuitive digital display provides real-time feedback on settings, making it easier for users to monitor parameters and make necessary adjustments on the fly.

The SVM105-B is built with portability in mind. Its compact and lightweight design makes it easy to transport, enabling welders to bring their equipment to job sites without hassle. Furthermore, the machine features sturdy handles that contribute to its ease of maneuverability, supporting the demands of both inside workshops and outdoor projects.

Moreover, Lincoln Electric places a strong emphasis on quality and reliability, and the SVM105-B is a testament to this commitment. The machine is constructed from durable materials designed to withstand the rigors of daily use, ensuring it remains a staple in any welder's toolkit for years to come.

In conclusion, the Lincoln Electric SVM105-B stands out with its combination of advanced inverter technology, versatile output, user-friendly interface, and robust construction. Whether for professional or hobbyist use, this welding machine meets a wide array of welding needs while providing excellent performance and durability.