Lincoln Electric MULTI-SOURCE SVM155-A - Manual (Page 55)

F-27 F-27
ACTIVE SCR TEST (Continued)
TROUBLESHOOTING & REPAIR
MULTI-SOURCE
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Leads
4. Using a 9/16” wrench, remove the two
positive output leads connecting the out-
put bridge to the shunt. See Figure F.11.
This will partially electrically isolate the
SCR bridge for testing purposes. See the
Wiring Diagram.
FIGURE F.11. Shunt and Lead Connections