Lincoln Electric SVM156-A service manual PC Board ASSEMBLY-VOLTAGE Sense, Identification

Models: SVM156-A

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G-23

 

 

 

 

ELECTRICAL DIAGRAMS

 

 

 

G-23

PC BOARD ASSEMBLY-VOLTAGE SENSE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ITEM

REQD

PART NO.

IDENTIFICATION

 

 

 

 

 

 

 

 

D1

1

T12199-1

1N4004

 

 

 

 

 

 

 

.

J1

1

S24020-6

HEADER

 

.20

 

 

 

 

.

J2

1

S24020-2G

HEADER

 

 

 

 

1.80

L1

1

T12218-7

330uH

 

 

 

 

OCI1,OCI2

2

S15000-20

PHOTO FET

 

 

 

 

 

 

 

 

R1,R2

2

S19400-4750

475 1/4W

±.04

 

 

 

 

 

 

 

R3

1

S18380-1

THERMISTOR,PTC

 

 

 

 

 

 

 

TP1,TP2

2

T13640-18

160J

 

 

 

 

 

 

 

 

1.75

 

 

M19540-1

 

 

 

 

 

 

 

1.55

 

 

 

 

 

CAPACITORS = MFD/VOLTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESISTORS = OHMS

 

 

 

 

 

 

 

 

 

INDUCTANCE = HENRYS

 

 

SELECTSENSE

 

J1

 

 

J2

 

 

 

 

 

 

R3

L1

OCI2

R1

R2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLTAGE

 

TP2

 

 

 

 

 

 

 

 

.20

 

TP1

 

OCI1

 

D1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ARA

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

±.04

 

 

 

 

 

 

 

1.00

 

2.00

 

COMMON DIGITAL CONTROLS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLTAGE SENSE SELECT P.C. BD AS'BLY

 

 

 

 

 

 

 

 

 

 

 

1-3-2000A

M19540-1

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.

Page 147
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Lincoln Electric SVM156-A service manual PC Board ASSEMBLY-VOLTAGE Sense, Identification