Lincoln Electric INVERTEC SVM129-B - Manual (Page 76)

TROUBLESHOOTING & REPAIR
F-38 F-38
INVERTEC® STT® & STT® II
SNUBBER RESISTORS TEST (continued)
FIGURE F.12 - REMOVING LEADS
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, perform
the capacitor discharge
procedure to avoid electric
shock.
4. Locate and gain access to the switch board.
5. Remove leads from terminals 401/403,
402/404 on the switch board. See Figure
F.12.
WARNING
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