Hypertherm powermax1000

MAINTENANCE
1
powermax1000 Service Manual 3-21
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 the meter leads in one direction and 0.1V to 1.0V with the
meter leads reversed.
T
he 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.
80
C
100
3
3 2 1
3 2 1
2
1
Top
3 to 2 = .179V
3 to 1 = 1.8V
Bottom
3 to 2 = .180V
3 to 1 = 1.8V