Service Procedures for the PCBs and Related Components
98 810440 Service Parts and Procedures Powermax65/85 SYNC
Replace the power PCB
For kit contents, refer to Plasma power supply interior, power PCB side on page 26.
Refer to page 100 through page 100 for an image of your power PCB.
Remove the power PCB
1. Set the plasma power supply switch to OFF (O), disconnect the power cord from the power
source, and disconnect the gas supply.
2. Remove the plasma power supply cover and the component barrier. Refer to page 49.
3. Remove the end panel bracket. Refer to page 53.
4. Get a photograph of the power PCB so that you have a record of how all the screws and wires
are attached.
5. Remove the DSP PCB, as follows:
a. If you are using a serial connection, remove the DSP connector from J7 at the top of the
DSP PCB.
b. Remove the 2 mounting screws from the DSP PCB.
c. Be careful not to bend the pins as you pull the DSP PCB away from the power PCB.
d. Disconnect the ribbon cable from J6 on the DSP PCB.
e. Set aside the DSP PCB in an anti-static bag.
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