Hypertherm Powermax1650 Service Manual - Manual (Page 35)

MAINTENANCE
3-8 powermax1650 Service Manual
1
Resistance Check #2
• Remove the linkage bar as shown below.
• Check each diode (connection 1 and 3) with an ohm meter in diode test mode.
• Value should be open with meter leads in one direction and 0.1V to 1.0V with meter leads reversed.
Diode is shorted if value is less than 0.1V. Replace diode.
Diode is open if value is greater than 1.0V in both directions. Replace diode.
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Linkage bar
Note: Black marker on wire
to lower diodes.