Lincoln Electric INVERTEC SVM129-B - Manual (Page 52)

TROUBLESHOOTING & REPAIR
F-14 F-14
INVERTEC® STT® & STT® II
T1 AUXILIARY
TRANSFORMER
PLUG
J31
PLUG
J30
FIGURE F.1 – T1 AUXILIARY TRANSFORMER AND J30/J31 LOCATION
T1 AUXILIARY TRANSFORMER TEST (continued)
TEST PROCEDURE
1. Turn off INVERTEC® STT® & STT® II and
disconnect main AC input power to the
machine.
2. Using the 5/16" nut driver, remove the case
wraparound cover.
3. Perform the Input Filter Capacitor
Discharge Procedure. See the
Maintenance section.
ELECTRIC SHOCK can
kill.
• Before continuing with
the test procedure, per-
form the capacitor dis-
charge
procedure to
avoid electric shock.
4. Locate the T1 auxiliary transformer and sec-
ondary lead molex plugs (J30 and J31) on
the left side, just in front of the main trans-
former assembly. Check for broken or loose
wires. See Figure F.1.
WARNING
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