Lincoln Electric INVERTEC V300-PRO SVM105-B Service Manual page 74

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THERMAL PROTECTION AC TRIGGER CIRCUIT (cont.)
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.
TROUBLESHOOTING & REPAIR
FIGURE F.20 - PC BOARDS MOVED FOR ACCESS
V300-PRO
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