Lincoln Electric MULTI-SOURCE SVM155-A - Manual (Page 56)

F-28 F-28
ACTIVE SCR TEST (Continued)
TROUBLESHOOTING & REPAIR
MULTI-SOURCE
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Remove
Red Paint
Anode
Cathode
5. Remove the red insulating paint from heat
sink test points. See Figure F.12.
6. Perform test procedure as follows. Refer
to Figure F.13. Repeat test for all six
SCRs.
NOTE: Do not disassemble the heat sinks.
FIGURE F.12. SCR Heat Sink Test Points