Hypertherm Powermax45 Service Manual - Manual (Page 85)

TroubleshooTing and sysTem TesTs
powermax
45 Service Manual 5-9
TP17
W
+ - + -
TP18
B
TP16
R
~280 VDC ~280 VDC
400 V Ce power supply overview
Power switch (S1)
Power board (PCB2)
Control board (PCB1)
Flyback circuit
PE (ground)
Output diode and pilot arc
IGBT module (D40)
Inverter IGBT (Q2)
Work lead connection (J21)
Newer power board
Input diode bridge
(D48)
Test points
TP17
W
+ - + -
TP18
B
TP16
R
~280 VDC ~280 VDC
older power board
Input diode bridges
(D28, D38)