Lincoln Electric 11694 Service Manual page 80

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POWER WAVE S350
REMOVAL AND REPLACEMENT PROCEDURE
MOUNTING
SCREWS
REPLACEMENT PROCEDURE
1. Carefully position the new switch board onto the mounting studs.
2. Using a 5/16" nutdriver, attach the four screws securing the
switch board to the chassis frame.
NOTE: Attach air baffle if previously removed.
3. Connect leads 410 and 409 to the switch board heatsink
thermostat. See Wiring Diagram.
4. Using a 7/16" socket, connect the three input power leads to
switch board terminals B30 (lead 2A), B31 (lead 1A) and B32 (lead
3A). See Wiring Diagram.
5. Using a 7/16" socket, connect the two input choke leads from
switch board terminals B28 and B29. See Wiring Diagram.
6. Using two 7/16" open end wrenches, connect the positive output
cable to the switch board. See Wiring Diagram. Note washer
placement for reassembly.
7. Using a 7/16" socket, connect the six output choke leads to switch
board terminals BL1, BL2, BL3, BL4, BL5 and BL6. See Wiring
Diagram.
8. Connect plugs J41, J42, J43, J45 and J28 to the switch board.
See Wiring Diagram.
9. Perform the Case Cover Replacement Procedure.
10. Perform the Retest After Repair Procedure.
SWITCH BOARD
Figure F.35 – Switch board mounting screw locations
TROUBLESHOOTING AND REPAIR
(continued)
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