G-25

 

 

ELECTRICAL DIAGRAMS

 

G-25

Return to Section TOC

Return to Master TOC

PC BOARD ASSEMBLY - POWER - (L8033-7)

 

 

 

 

 

 

 

 

￿￿￿￿￿￿￿

 

￿￿￿￿￿￿￿￿￿￿￿

 

 

 

 

 

 

Return to Section TOC

Return to Master TOC

 

￿

 

 

 

￿

 

 

 

 

 

￿

￿

 

TOC

TOC

 

￿

 

 

 

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-I

 

 

 

 

 

 

 

 

Page 117
Image 117
Lincoln Electric SVM101-B service manual PC Board Assembly Power L8033-7, VOLT. REG. & Heat Sink Asbly