Lincoln Electric SVM158-A service manual J5 J6 J7J8

Models: SVM158-A

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F-53

F-53

TROUBLESHOOTING & REPAIR

CONTROL BOARD REMOVAL AND REPLACEMENT (continued)

FIGURE F.18. - CONTROL BOARD ALL PLUG LOCATIONS

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A

AMPS

 

 

 

 

K

 

 

 

-

 

 

 

 

CC STIC

 

 

 

CC-

K

7018

 

 

 

 

 

STIC

6

 

 

TIG G

TAW

010

 

 

CV-WIR

 

 

 

CV-

E

 

 

 

FLUX CORED

 

 

 

 

SELE

CT

 

 

 

W

 

 

 

 

ARNING

 

 

 

 

 

 

REMOTE

 

 

J5 J6 J7J8

J9

J4

J3

 

 

 

 

V

 

VOLTS

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

OUTPUT

 

WELD

TERMINALS

 

 

 

 

 

 

HOT

START

 

 

SELECT

 

4

 

 

 

 

3

5

 

ARC

ONTROL

 

2

 

6

 

 

1

 

 

7

 

 

 

 

 

 

 

8

-2

 

0

 

0

 

 

-4

 

 

 

 

10

9

-6

 

+2

 

 

 

 

 

 

 

+4

 

 

 

 

-8

 

 

 

 

 

 

-10

 

 

+6

 

 

 

 

 

 

 

 

 

 

 

SOFT

+10

+8

 

 

 

 

 

 

CRISP

 

J10B

J10A

POWER

ON

OFF

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CAUTION

Observe static precautions detailed in PC Board Troubleshooting Procedures at the beginning of this section.

6.Using a flat head screwdriver remove the two screws and their washers from above and below the input power switch. See Figure F.17.

7.Using a phillips head screwdriver remove the four screws from around the two welder output termi- nals on the front of the machine. See Figure F.17.

8.The front of the machine may now gently be pulled forward to gain access to the display Board. Note: The front of the machine cannot be removed com- pletely, only pulled forward a few inches.

9.Beginning at the right side of the control board remove plugs J10A and J10B. Note: Be sure to label each plugs position upon removal. See Figure F.18.

10.Working your way across the top of the board from right to left, label and remove plugs #J9, #J8, #J7, #J6, and #J5. See Figure F.18.

11.Working your way down the left side of the board, label and remove plugs #J4 and #J3. See Figure F.18.

V350-PRO

Page 103
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Lincoln Electric SVM158-A service manual J5 J6 J7J8