Hypertherm Powermax30 AIR Service Manual - Manual (Page 118)

118 Powermax30 AIR Service Manual 808850
6 – Power Supply Component Replacement
Replace the control board
1. Complete the following procedures:
a. Set the power switch to OFF (O), and disconnect the power cord from the power source.
b. See Remove the power supply cover on page 98.
c. See Remove the component barrier on page 100.
d. See Detach the front panel on page 102.
2. Make sure the control board’s ribbon cable is disconnected from the power board . See Figure 40.
3. Test the new control board before installing it:
a. Attach the control board’s ribbon cable to the power
board at J7.
b. Reconnect the power cord to the power source, and
turn the system ON (I).
c. Make sure the Start LED on the control board is the only
LED illuminated. Also, the fault LEDs on the front panel
should be extinguished. See
Control board LEDs on
page 71.
Kit number Description
428404 Kit: Control board (141365)
CAUTION!
Static electricity can damage circuit boards. Use proper precautions when handling
printed circuit boards.
Store PC boards in anti-static containers.
Wear a grounded wrist strap when handling PC boards.
WARNING!
ELECTRIC SHOCK CAN KILL
Stay clear of electrical wires and components while testing the new control board.
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