0-5461 10-5 PRELIMINARY TROUBLESHOOTING-POWER SOURCE
10.06 DC Bus Voltage Measurement in Inverter PCB
Apply voltage to the Power Source.
WARNING
There are extremely dangerous voltage and power levels present inside these Power Sources. Do not attempt to diagnose or repair
unless you have had training in power electronics measurement and troubleshooting techniques. DO NOT TOUCH ANY LIVE PARTS.
Once power is applied to the Power Source, there are extremely hazardous voltage and power levels present.
Do not touch any live parts.
Testpoint No.
DC Bus
Capacitor
Test
Multimeter Lead Placement
DC Bus Voltage
(Multimeter set for DC volts)
1
2
C5, C6, C8 Positive (red) meter lead to testpoint 1
Negative (black) meter lead to testpoint 2
340 VDC
Table 10-8 DC BUS, Multimeter set to measure DC volts
Note: These DC voltages are at nominal mains supply voltage of 240VAC.
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