Lincoln Electric SVM146-A service manual Figure F.22 Output Board Lead Locations

Models: SVM146-A

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F-48

F-48

TROUBLESHOOTING & REPAIR

OUTPUT POWER BOARD REMOVAL & REPLACEMENT (continued)

FIGURE F.22 – OUTPUT BOARD LEAD LOCATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G3439 PRO-CUT 80 OUTPUT

X4

 

 

 

 

 

 

 

 

 

 

X2

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(B12)

 

 

 

 

 

 

 

 

 

(B11)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST POINT

 

 

C13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D25

LED3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(B21)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED2

 

 

 

TEST POINT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D29

 

 

 

 

 

 

 

 

 

 

 

X20

X40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J33

 

 

 

 

 

 

 

 

 

 

J31

J34

J32

 

 

 

J30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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4.Using the 7/16” wrench, remove leads X4, X2 and B21 from the output power board.

5.Remove plugs J30, J31, J32, J33, and J34 from the output power board.

6.Remove leads X20 and X40 from the output power board.

7.Using the phillips head screw driver, remove the four screws from the lower + upper left and right corners of the output power board.

8.Using the 3/16” allen head wrench, remove the four socket screws mounting the output power board to the heat sink.

9.Carefully remove the output power board from the heat sink.

CAUTION

Be sure to follow the recommended static-free methods for handling printed circuit boards. Failure to do so can result in permanent damage to the equipment.

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PRO-CUT 80

Page 88
Image 88
Lincoln Electric SVM146-A service manual Figure F.22 Output Board Lead Locations