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F-37

TROUBLESHOOTING & REPAIR

F-37

INPUT BOARD REMOVAL & REPLACEMENT (continued)

FIGURE F.17 – INPUT BOARD REMOVAL

Mounting

Screws

Switch

Leads

A B

AC

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AC

CP

Fan

Leads

Multi-colored

Plug

Mounting

Screws

Four Leads

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11.Using a 7mm Nut driver, remove the four mounting nuts from the corners of the Input Board. Be careful not to lose the washer behind each nut. Input Board can be removed after these four nuts are removed.

12.After replacement of the Input Board, replace the four nuts and washers previously removed from the corners of the board. Do Not Over tighten.

13.Using a 7 mm nut driver replace two leads originating from the Input Switch. (A+B)

14.Reconnect four leads in their correct positions. (AC and CP)

15.Reconnect the harness plug.

16.Reconnect the fan leads to the Input Board. Be sure that leads are connected to their original positions.

17.Replace the case wraparound.

18.Replace the plastic nut from around the pressure regulator. Do Not Over tighten.

19.Replace the carry handle.

PRO-CUT 25

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Image 71
Lincoln Electric SVM149-A service manual Input Board Removal & Replacement