Lincoln Electric SVM188-A service manual Internal Trigger Circuit Test, 75 76

Models: SVM188-A

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Section TOC

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F-15

TROUBLESHOOTING AND REPAIR

F-15

INTERNAL TRIGGER CIRCUIT TEST (continued)

FIGURE F.4 - TERMINAL STRIPS AND AMPHENOL

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TS 2

21+ 21- 41 4 2

31 32

10AMP CIRCUIT BREAKER

 

OUTPUT

 

 

TERMINALS

 

 

SWITCH

 

5

6

 

4

7

 

 

 

3

 

 

 

8

 

2

 

 

 

9

 

1

10

 

 

 

 

DC-600

 

 

 

K = 4 2

 

A = 3 2

J = 3 1

 

B = G N D

I = 4 1

TS 1

L

N

 

14 PIN

 

 

CONNECTOR C = 2

H = 2 1

75 76 77

D = 4

G = 7 5

 

 

E = 7 7

F = 7 6

 

 

 

 

M

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FIGURE F.5 - SIMPLIFIED TRIGGER DIAGRAM

 

 

 

 

10AMP

 

 

 

 

 

 

CIRCUIT

 

 

 

 

 

 

BREAKER

 

 

 

 

 

 

42

To 42A at Main

 

FIRING BOARD

 

 

 

 

Transformer

 

 

 

 

 

 

 

 

 

 

TERMINAL

 

 

 

 

 

 

STRIP TS 2

 

 

 

 

14-PIN

 

 

 

 

11J5

291

 

 

 

2

 

RECEPTACLE

 

 

 

 

 

 

 

 

4J5

 

TO

 

2

 

2

OUTPUT

 

CONTROL

C

2

 

BOARD

 

 

TERMINAL

LED10

 

 

 

K

42

 

 

SWITCH

10J5

290

 

 

4

 

 

4

 

4

 

 

D

4

 

LATCHING

 

 

 

9J5

 

I

 

41

 

 

RESISTOR

 

 

41

 

 

ENABLE

 

 

 

 

41

FIRING

 

 

 

 

 

1J5

 

 

 

 

 

 

CIRCUIT

 

 

 

 

 

 

ENABLE

 

To 41 at Main

Transformer

DC-600

Page 55
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Lincoln Electric SVM188-A service manual Internal Trigger Circuit Test, 75 76