Lincoln Electric SVM168-B service manual Printed Circuit Board Removal and Replacement

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F-48 TROUBLESHOOTING & REPAIR F-48

PRINTED CIRCUIT BOARD REMOVAL AND REPLACEMENT

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FIGURE F.10 - PRINTED CIRCUIT BOARD LOCATION

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4 Pin Plug

PROCEDURE

Before starting the following procedure, refer to the topic “PC Board Troubleshooting Procedures” at the beginning of this section.

1.Remove the engine spark plug wires.

2.With the 5/16” nut driver, remove the 6 sheet metal screws from the case top.

3.Remove the rubber gasket (cover seal) from the lift bail.

4.Remove the fuel cap. The rubber gasket for the fill tube will come off with the case top.

5.Remove the case top, then reinstall the fuel cap.

6.With the 5/16” nut driver, remove the 5 screws holding the right case side.

7.Remove the right case side by lifting up and out.

4 Self Tapping Screws (at corners)

12 Pin Plug

1/4" Q.C. Tabs

8.Remove the 12-pin molex plug from the Printed circuit board.

9.Remove 4-pin molex from the current sensing leads.

10.Remove leads from two 1/4” Q.C. con- nectors.

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