Hypertherm Powermax105 Service Manual - Manual (Page 239)

Power SuPPly ComPonent rePlaCement
powermax
105 Service Manual 9-41
Remove the power board
Complete the instructions below while referring to the applicable figure:
• 200-600 V CSA power board on page 9-42
• 230-400 V CE, 380 V CCC/230-400 V CE power board on page 9-43
• 380 V CCC/400 V CE power board on page 9-44
1. Unplug the five wire connectors located at the J1, J2, J3, J5, and J6 headers on the back side of the power board.
2. Disconnect the gate drive wire connectors from the power board.
3. Disconnect the PFC temperature sensor connector (all models except 380 V CCC and 400 V CE) from the power
board.
4. Remove the two 3uF capacitors from the power board.
5. Remove all the screws and bolts securing wires to the power board.
6. Remove all the remaining screws from the power board except the four board mounting screws and the two
transformer mounting screws.
7. Remove the four board mounting screws. Do not remove the two transformer mounting screws.
8. Pull the right-hand edge of the power board forward, while pushing the gate drive wires and PFC temperature
sensor wires through the openings in the board.
Note: Silkscreen printing above the openings in the board denotes the color and order of the gate drive wires.
The printing is “BLK” (black), “RED” (red), “BLK” (black), “RED” (red) from left to right.
9. Unplug the J11 and J17 wire connectors from the left side of the power board.
10. If a CNC interface receptacle is installed on the rear of the power supply, unplug the J18 and J32 wire connectors
from the left side of the power board.
11. Remove the power board from the power supply and set aside.