CIGWELD 170Oi - Preliminary DC Bus Measurement of the Main Inverter PCB

TRANSTIG 170Pi
TROUBLESHOOTING 6-6 Manual 0-5242
6.07 Preliminary DC Bus Measurement of the Main Inverter PCB
WARNING
Check DC bus voltage has discharged to less than 5VDC before servicing. Ensure the mains supply
plug is disconnected from receptacle.
Art # A-11813
Figure 6-3: Preliminary DC Bus Measurement of the Main Inverter PCB
DC Bus Testing Multimeter Lead Placement
Voltage with Supply
Voltage OFF
Upper capacitor bank
Positive meter lead to TP 1
Negative meter lead to TP 2
0 VDC
Lower capacitor bank
Positive meter lead to TP 2
Negative meter lead to TP 3
0 VDC
Table 6-3: DC BUS, Multimeter set to measure DC volts