Troubleshooting & repair, Thermal protection ac trigger circuit (cont.) – Lincoln Electric INVERTEC SVM101-B User Manual
Page 74
V300-I
TROUBLESHOOTING & REPAIR
TEST PROCEDURE
1. Turn main power OFF.
2. Perform Input Filter Capacitor Discharge proce-
dure detailed in this section.
3. Detach the following PC boards so you can gain
access to and have ample room to perform the
tests. (Do not disconnect from wiring harness.)
•
Power Board
•
Control Board
NOTE:
Do not disconnect any wires. The machine
must be functional to perform test.
F-44
F-44
THERMAL PROTECTION AC TRIGGER CIRCUIT (cont.)
FIGURE F.20 - PC BOARDS MOVED FOR ACCESS
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