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F-34

F-34

TROUBLESHOOTING & REPAIR

AUXILIARY TRANSFORMER TEST (continued)

FIGURE F.8 Auxiliary Transformer

Auxiliary

Transformer

Secondary Lead

Plugs P52

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A

AMPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

VOLTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K

18

 

A

 

 

 

 

 

 

 

 

 

 

C-

 

7010

 

OUTPUT

 

 

 

LD T

 

 

C

 

STIC

60

 

 

 

WE

 

 

CC-

 

 

 

 

 

 

 

 

 

 

 

TIGSTICKGTAW

 

 

 

 

 

 

 

 

 

ERM

INALS

 

CV-WIRE ORED

 

 

 

 

 

 

 

 

 

 

CV-

X C

 

 

HOT

 

 

 

SE

 

 

 

 

FLU

 

 

 

 

 

 

LECT

 

 

 

 

 

 

ECT

 

4

5START

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

SEL

2

 

6

 

ARC

 

 

 

W

ARNING

 

 

 

 

 

 

 

CO

NTROL

 

 

 

 

 

 

1

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

 

 

 

 

 

 

 

0

 

8

-4

2

0

 

 

 

 

 

REMOTE

 

 

 

10

9

-6

 

 

+2

 

 

 

 

 

 

 

 

 

 

 

-8

 

 

 

+4

 

 

 

 

 

 

 

 

 

 

 

-10

 

 

+6

 

 

 

 

 

 

 

 

 

 

 

SOFT

 

+10

+8

 

 

 

 

 

 

 

 

 

 

 

 

 

CRISP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

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TEST PROCEDURE

1.Remove input power to the V350-PRO.

2.Using a 5/16” nut driver, remove the case wraparound cover.

3.Perform the Input Capacitor Discharge Procedure detailed earlier in this section.

4.Locate the auxiliary transformer. See Figure F.8.

5.Locate the secondary leads and plug P52. See Figure F.8 and F.9.

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FIGURE F.9 Plug Lead Connections Viewed From Transformer Lead Side of Plug

532

42

24

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Plug P52

31

54

541

V350-PRO

Page 84
Image 84
Lincoln Electric SVM158-A service manual Plug P52