Lincoln Electric 355M Manuel d'utilisateur télécharger pdf (Page 105)

POWER BOARD REMOVAL AND REPLACEMENT (continued)

TROUBLESHOOTING AND REPAIR

F-59 F-59

POWER WAVE 355M/405M

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Observe static precautions detailed in PC

Board Troubleshooting Procedures at the

beginning of this section.

5. Locate the three plug connections. J41, J42 and

J43 on the Power Board. See figure F.26.

6. Carefully disconnect the three plugs from the

Power Board.

7. Remove the three nuts at the corners of the board

using a 3/8” nut driver. Board is ready for removal.

8. Replace the power board.

9. Secure the new power board into its proper posi-

tion with the three 3/8” nuts previously removed.

10. Reconnect the three plugs previously removed.

Plugs J41, J42 and J43.

11. Replace the case wraparound cover.

CAUTION

J42

J41

J43

FIGURE F.26 – POWER BOARD LEAD LOCATION

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 136 137

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Lincoln Electric 355M Manuel d'utilisateur Page 105