Hypertherm Powermax45 Service Manual - Manual (Page 84)

TroubleshooTing and sysTem TesTs
5-8
powermax
45 Service Manual
TP 19
W
- + - +
TP 18
R
TP 17
B
192 VDC
192 VDC
Power switch (S1) Power board (PCB2)
Control board (PCB1) Flyback circuit
PE (ground)
Newer power board
Input diode bridge
(D48)
Output diode and pilot arc
IGBT module (D38)
PFC IGBT (Q2)
Inverter IGBT
(Q3)
Work lead connection (J21) Test points
200–240 V CSA and 230 V Ce power supply overview
TP 19
W
- + - +
TP 18
R
TP 17
B
192 VDC 192 VDC
older power board
Input diode bridges
(D29, D39)