Test 3 – output diodes, Powermax1250 – Hypertherm Powermax1250 Service Manual User Manual
Page 57
MAINTENANCE
3-24
powermax1250
Service Manual
4
Test 3 – output diodes
• Check each diode (connection 1 and 3) with an ohm meter in diode test mode.
• For each diode, the value should be open with meter leads in one direction and 0.1V to 1.0V with the meter
leads reversed.
The diode is shorted if the value is less than 0.1V. Replace the diode.
The diode is open if the value is greater than 1.0V in both directions. Replace the diode.
Note:
In each case, common (black) should be on 3.
3
3
2
1
3
2
1
2
1
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