Editing Determining Argon hardware failure

If [[Argon (servo drive)]] refuses to operate in any meaningful way, it is good to perform few tests for the hardware to identify possible hardware failures.
==Testing power stage==
Motor power stage and braking resistor output consists IGBT transistors that typically short circuit if they are damaged.

Testing such failure typically needs only a multimeter with resistance measurement function. 

#Unplug all connectors from the drive at least 30 minutes before testing as residue voltages may disturb this test. After 30 minutes, ensure that [[Power supply safe discharging|voltage has been safely discharged]].
#Measure resistance between J4 pin VN against BR,U,V and W. A typical resistance is between 100 kΩ - 10 MΩ. If resistance is less than 10 kΩ, there may be a failed IGBT.
#Measure resistance between J4 pin VP against BR,U,V and W. A typical resistance is between 100 kΩ - 10 MΩ. If resistance is less than 10 kΩ, there may be a failed IGBT.