Lincoln Electric INVERTEC SVM129-B Service Manual page 61

F-23
T4 AUXILIARY TRANSFORMER TEST (continued)
T4 AUXILIARY
TRANSFORMER
LEADS
32A, 32B, 33A, 33B
STT
11. Locate and remove leads #32A, #32B and
#33A, #33B from the T4 transformer tabs.
See Figure F.8.
WARNING
ELECTRIC SHOCK can kill.
TROUBLESHOOTING & REPAIR
FIGURE F.8 – T4 TRANSFORMER LEAD CONNECTIONS
T4 AUXILIARY
TRANSFORMER
• With input power ON,
there are high voltages
inside the machine. Do
not reach into the
machine or touch any
internal part.
INVERTEC STT
LEADS
32A, 32B, 33A, 33B
STT II
12. Carefully apply the 115VAC isolated supply
to the T4 transformer at the #32 and #33
tabs.
F-23