TOC

F-77

F-77

TROUBLESHOOTING & REPAIR

POWER BOARD REMOVAL AND REPLACEMENT (continued)

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5.Locate the three plug connections. J41, J42 and J43. See figure F.35.

6.Carefully remove the three plugs from the power board.

7.Remove the three nuts and at the corners of the board using a 3/8” nut driver. Board is ready for removal.

9.Replace with new power board.

10.Secure the new power board into its proper posi- tion with the three 3/8” nuts previously removed.

11.Replace the three plugs previously removed. Plugs J41, J42 and J43.

12.Replace the case wraparound cover.

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8. Remove the power board.

FIGURE F.35. – POWER BOARD LEAD LOCATION

J42

J41

J43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V350-PRO

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Image 127
Lincoln Electric SVM158-A service manual J42 J41 J43