Machine Interface Receptacle with Voltage Divider PCB
6 806980 Field Service Bulletin Powermax65/85/105/125, Powermax65/85/105 SYNC
4. Remove the component barrier from the power-PCB side of the plasma power supply.
Remove the end panel bracket
Remove the end panel bracket . Some models have 
2 screws  on the end panel bracket that you must first 
remove.