Hypertherm XPR170 - Replace the Ohmic PCB

Torch Connect Console
3
XPR170 Field Service Bulletin 810410 103
Replace the ohmic PCB

Refer to Torch connect console Easy Connect side on page 152 for
location and part number.
1. Complete the following procedures:
a. Remove the power from the
cutting system.
b. Remove the top panel.
c. Remove both side panels.

Refer to Torch connect
console top panel and side
panels on page 126.

Keep all nuts and screws that
you remove.
2. Remove the wire connectors from
the PCB.
3. Remove the ohmic wire from the
PCB.

Note where the wire was
installed.
4. Disconnect the yellow plasma hose.
5. Remove the 3 screws .
6. Make sure that the tabs for J3 and J4 are down .
7. Tilt the PCB up and slide the PCB through the center panel to remove the PCB.
8. Slide the new PCB through the center panel.
9. Use the 3 screws to install the PCB. Tighten to 6.9 kg∙cm (6 in∙lbf).
10. Connect the wires J1, J2, J3, and J4. Make sure that you connect the ohmic wires to where you
removed them. The location of the ohmic wires varies by system setup.

Ohmic PCBs with a revision letter of F or later have 2 parallel connectors
for the ohmic relay (J2 and J2A). Make sure to use the ohmic PCB
connector that corresponds with the ohmic relay connector.