Chopper Control Board - Lincoln Electric POWER WAVE C300 Service Manual

F-52
INPUT RECTIFIER TEST PROCEDURE (continued)
C HO PPE R C O NTRO L
BO ARD
PLANA R
T RANSF O RME R
INPUT RECTIFIER
TEST POINTS
C URRE NT TRANSDUC E R
PROCEDURE
1. Remove the input power to the machine.
2. Perform the Chassis Removal and DC Link
Capacitor Discharge Procedure.
3. Locate the Input Rectifier and associated leads.
See Figure F.17 and Figure F.18.
4. Use the digital voltmeter (DVM) set to the diode
test mode to perform the tests detailed in Table
F.11.
5. If the Input Rectifier does not meet the expected
readings replace the Switch Board.
TROUBLESHOOTING AND REPAIR
FIGURE F.17 – INPUT RECTIFIER LOCATION
POWER WAVE® C300
O N/O F F SW ITC H
INPUT C HO K E
F-52