Lincoln Electric SVM118-A Welder User Manual


 
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F-53 F-53
STATIC SCR TEST (continued)
FIGURE F.18 – SCR TEST POINTS
TROUBLESHOOTING & REPAIR
SQUARE WAVE TIG 355
SCR 3 & 4 Anode
and Negative Plate
#4
Cathode
#1
Anode
Choke
Lead
SCR1 & 2 Cathode
and Positive Plate
SCR1
SCR4
SCR3
SCR2
#3
Cathode
#2
Anode