06 preliminary check of the main inverter board, Preliminary check of the main inverter board -5, Transarc 130i – Tweco 130i Transarc Service Manual User Manual
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TROUBLESHOOTING 6-4 Manual 0-5282
TRANSARC 130i
6.06 Preliminary DC Bus measurement of the main inverter board
!
WARNING
Check DC bus voltage has discharged to less than 5VDC before servicing. Ensure the mains supply
plug is disconnected from receptacle.
A-11844
DC Bus Testing
Multimeter Lead Placement
Voltage with Supply voltage OFF
Upper capacitor bank
Positive meter lead to testpoint 1
Negative meter lead to testpoint 2
0 VDC
Lower capacitor bank
Positive meter lead to testpoint 2
Negative meter lead to testpoint 3
0 VDC
Table 6-2: DC BUS, Multimeter set to measure DC volts
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