Marantz PM64II - Volume & Push Switch Assembly (PS01) Schematic Diagram and Component Locations (Model PM-54 II); Tone Volume Assembly (PE01) Schematic Diagram and Component Locations (Model PM-54 II); Tone Defeat Switch Assembly (PE51) Schematic Diagram and Component Locations (Model PM-54 II); Power Switch Assembly (P901) Schematic Diagram and Component Locations (Model PM-54 II)