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TROUBLESHOOTING & REPAIR
IGBT MODULE REMOVAL
AND REPLACEMENT (continued)
FIGURE F.23 – OUTPUT CHOKE LEAD DISCONNECTION
LOWER | OUTPUT CHOKE/ | |
IGBT MODULE | ||
TRAY | ||
SPLICED CONNECTION | ||
AREA | ||
|
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PROCEDURE
1.Turn off the 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 Input Filter Capacitor Discharge Procedure. See the Maintenance section.
4.Locate the lead connection splice from the output choke to the IGBT module. Remove the insulating sleeve. Using the 7/16" wrench disconnect the lead splice. Thread the lower lead down into the lower tray assembly area. See Figure F.23.
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WARNING
ELECTRIC SHOCK can kill.
•Before continuing with the test procedure, perform the capacitor discharge procedure to avoid electric shock.
