Lincoln Electric INVERTEC SVM129-B Service Manual page 76

F-38
SNUBBER RESISTORS TEST (continued)
TEST PROCEDURE
1. Turn off Invertec STT and disconnect main
AC input power to the machine.
2. Using the 5/16" nut driver, remove the case
wraparound cover.
3. Perform the
Discharge Procedure.
Maintenance section.
WARNING
ELECTRIC SHOCK can kill.
TROUBLESHOOTING & REPAIR
FIGURE F.12 - REMOVING LEADS
Input Filter Capacitor
See the
• Before continuing with the
test procedure, perform
the capacitor discharge
procedure to avoid electric
shock.
INVERTEC STT
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.
F-38