Lincoln Electric 11694 Service Manual page 90

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POWER WAVE S350
REMOVAL AND REPLACEMENT PROCEDURE
DISCONNECT 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 optional auxiliary power board. See Figure F.41.
4. Label and disconnect plug J62 form the auxiliary power board.
See Figure F.42. See Wiring Diagram.
5. Label and disconnect leads 317 and 318 from terminals B5 and
B6 of the auxiliary power board. See Figure F.42. See Wiring
Diagram.
6. Tape the ends of the quick connect terminals (leads 317 and 318)
with electrical tape to operate the machine without the auxiliary
power board active/installed.
7. Perform the Case Cover Replacement Procedure.
OPTIONAL AUXILIARY POWER BOARD
Figure F.41 – Auxiliary power board location
AUXILIARY POWER BOARD
(MOUNTING LOCATION)
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 auxiliary power board. See Figure F.41.
4. Label and disconnect plugs J62 and J63 from the auxiliary power
board. See Figure F.42. See Wiring Diagram.
5. Label and disconnect leads 317 and 318 from terminals B5 and
B6 of the auxiliary power board. See Figure F.42. See Wiring
Diagram.
6. Using a 3/8" nutdriver, remove the four mounting nuts securing
the auxiliary power board to the mounting studs. See Figure
F.42.
7. The auxiliary power board can now be removed and replaced.
TROUBLESHOOTING AND REPAIR
(continued)
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