Lincoln Electric INVERTEC SVM129-B - Manual (Page 60)

TROUBLESHOOTING & REPAIR
F-22 F-22
INVERTEC® STT® & STT® II
T4 AUXILIARY TRANSFORMER TEST (continued)
7. Carefully lift and tilt the INVERTEC® STT®
& STT® II machine onto its right side. See
Figure F.6.
8. Using the 7/16" wrench, remove the five
bolts holding the lower tray assembly to the
case bottom.
9. Carefully slide out and support the lower tray
assembly for testing purposes.
10. Locate and remove plug J13 from the
IGBT drive board. See Figure F.7.
FIGURE F.6 – STT ON ITS RIGHT SIDE
MOUNTING
BOLTS (5)
FIGURE F.7 – PLUG J13 LOCATION
T4 AUXILIARY
TRANSFORMER
PLUG J13
IGBT
DRIVE BOARD
STT II
Return
to
Section
T
OC
Return
to
Section
T
OC
Return
to
Section
T
OC
Return
to
Section
T
OC
Return
to
Master
T
OC
Return
to
Master
T
OC
Return
to
Master
T
OC
Return
to
Master
T
OC