Powermax125
Service Manual 808070
113
8 – Troubleshooting and System Tests
Troubleshooting preparation
The complexity of the system circuits requires that service technicians have a working knowledge of inverter power supply
theory. In addition to being technically qualified, technicians must perform all testing with safety in mind.
If questions or problems arise during servicing, call the Hypertherm Technical Services team listed in the front of this
manual.
Test equipment
Multimeter
IGBT tester (128883)
Troubleshooting procedures and sequence
When performing the troubleshooting procedures, refer to:
Safety and Compliance Manual
(80669C) for detailed safety information.
Power Supply Component Replacement
Troubleshooting and System Tests
After the problem has been located and repaired, refer to
on page 112 to test the power supply
for proper operation.
Power OFF (O) and disconnected
Power ON (I)
and