Test 3 – output diodes, Test 3 – output diodes -46, Powermax – Hypertherm Powermax105 Service Manual User Manual
Page 184
Advertising
TroubleshooTing and sysTem TesTs
8-46
powermax
105
Service Manual
test 3 – output diodes
• Turn OFF the power switch and disconnect the power cord.
• Check the four diodes in the bridge with an ohmmeter in diode test mode.
• For each diode, the value should be “open” (very high resistance) with the meter leads in one direction and
0.1V to 1.0V with the meter leads reversed.
- A diode is shorted if the value is less than 0.1V. Replace both bridges.
- A diode is open if the value is greater than 1.0V in both directions. Replace both bridges.
Note: In each case, common (black) should be on 3.
3
2
1
3
2
1
3
2
1
3
2
1
Advertising
This manual is related to the following products: