Lincoln Electric 11694 Service Manual page 30

®
POWER WAVE S350
POWER FACTOR CORRECTION CONTROL BOARD TEST
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 PFC control board. See Figure F.4.
4. Apply the correct input power to the Power Wave S350 machine.
5. Locate LED 2 on the PFC control board. See Figure F.5.
6. LED 2 should be on and green during proper operation of the PFC
control board.
7. Locate LED 1 and the audio buzzer on the PFC control board. See
Figure F.5.
8. If there is a problem with the PFC control board LED 1 and the
buzzer will provide an error code. See Figure F.5 for error codes.
LED 2 will also be OFF or blinking.
9. If further testing is required remove the input power to the
machine and perform the resistance checks in Table F.2. See
Figure F.5, Figure F.6, Figure F.7 and Figure F.8 for test point
locations. See Wiring Diagram. To access some of the test points
the PFC control board may have to be removed from its mounting
studs. See the Power Factor Correction Control Board
Removal Procedure.
Figure F.4 – PFC control board location
POWER FACTOR CORRECTION
CONTROL BOARD
(LOCATED ON REAR OF FRONT PANEL)
10. When testing is complete replace all previously removed plugs.
11. If any of the tests fail, perform the Power Factor Correction
Control Board Removal and Replacement Procedure.
12. Perform the Case Cover Replacement Procedure.
TROUBLESHOOTING AND REPAIR
(continued)
24