Hypertherm Powermax30 AIR Service Manual - Manual (Page 119)

Powermax30 AIR Service Manual 808850 119
6 – Power Supply Component Replacement
Figure 40
4. Turn the system OFF (O). Disconnect the power cord from the power source, disconnect the ribbon cable , and
set the new control board aside.
5. Remove the amperage adjustment knob from the front of the power supply by pulling it away from the front panel .
(It does not have a set screw.)
6. Remove the 3 retaining screws from the control board. Lift the board out of the front panel.
Figure 41
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