Lincoln Electric 11694 Service Manual page 86

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POWER WAVE S350
REMOVAL AND REPLACEMENT PROCEDURE
REMOVAL PROCEDURE
1. Remove the input power to the Power Wave S350 machine.
2. Perform the Case Cover Removal and DC Link Capacitor
Discharge Procedure.
3. Locate the DC bus board. See Figure F.39.
4. Label and disconnect plugs J46 and J47 from the DC bus board.
See Figure F.40. See Wiring Diagram.
5. Using a 3/8" nutdriver, remove the four nuts securing the DC bus
board to the vertical divider. See Figure F.40.
6. Carefully remove the DC bus board form the mounting studs.
7. The DC bus board can now be removed and replaced.
DC BUS BOARD
Figure F.39 – DC bus board location
TROUBLESHOOTING AND REPAIR
(continued)
DC BUS
BOARD
80