Lincoln Electric POWER WAVE C300 Service Manual page 57

F-38
POWER FACTOR CONTROL BOARD TEST PROCEDURE (continued)
TABLE F8 - POWER FACTOR CORRECTION CONTROL BOARD RESISTANCE CHECKS (continued)
Main Boost Gate
Drive
Auxiliary Boost
Gate Drive
TROUBLESHOOTING AND REPAIR
Plug J23 Pin 8 (-)
To
Plug J23 Pin 7 (+)
Plug J23 Pin 9 (-)
To
Plug J23 Pin 10 (+)
POWER WAVE® C300
Resistance should
be greater than 500
ohms
Resistance should
be greater than 500
ohms
F-38
Input power
removed. Remove
Plug J43 from the
Switch Board.
Typical failure is a
short
Input power
removed. Remove
Plug J43 from the
Switch Board.
Typical failure is a
short