Hypertherm Powermax 85

TROUBLESHOOTING AND SYSTEM TESTS
5-44 powermax 65/85 Service Manual
For operational fault codes 0-40-0 and 0-40-1 or power board faults 3-11-0 and 3-11-1 (CSA only)
1. Remove PFC temperature sensor connector (J16) from power board.
2. Check the resistance between pins 1 and 2 on the plug. Resistance should be about 5.5 kΩ.
3. If the resistance is incorrect, replace the PFC IGBT and gate drive cables.
4. If the value is correct, measure resistance between pins 1 and 2 on the power board with the temperature sensor
disconnected. The resistance should be about 4.7 kΩ.
5. If the value is correct, replace DSP board.
6. If the value is incorrect, replace power board.
BLK
BLK
J13
J16J17J18J19
PFC temperature sensor connection