Multi-Phase Chopper Board Test Points - Lincoln Electric POWER WAVE S500 Service Manual

F-46
CURRENT TRANSDUCER TEST (continued)
FIGURE F.17 – MULTI-PHASE CHOPPER BOARD TEST POINTS
13. If the supply voltages are correct per Table
F.14 but the transducersʼ feedback voltages
are incorrect the current transducer or wiring
from the current transducer to the PC board
may be faulty.
14. When testing is complete Click "Turn Output
Off".
15. Disconnect the laptop computer.
16. Remove the input power to the Power Wave
S500 machine.
17. Perform the Case Cover Replacement
Procedure.
TROUBLESHOOTING AND REPAIR
POWER WAVE
PIN 3
PIN 4
J42
®
® S500
F-46
PIN 1
PIN 2