Lincoln Electric COMMANDER 400 SVM133-B Service Manual page 101

F-47
8. Locate and remove lead #204B from
resistor R1 (50 ohms, 100 Watts).
Figure F.19.
REMOVE
INSULATING PAINT
9. Remove the red insulating paint from the
heat sink test points. See Figure F.20.
TROUBLESHOOTING & REPAIR
ACTIVE SCR TEST (continued)
FIGURE F.19 - RESISTOR R1 LOCATION
See
FIGURE F.20 - HEAT SINK TEST POINTS
COMMANDER 400
RESISTOR R1
LEAD #204B
NOTE: Do not disassemble the heat sinks.
F-47
ANODE
CATHODE