RCA Service Company Training Manuals.
For the SJT100/200/300. Covers in depth the operation of the "J and K line players. Included is a full technical explanation of how the player works with ample photos and diagrams. And flow charts to help track down problems. 79 pages.
For the SJT400 ( SKT400). Covers the Random Action functions, microprocessor operation and data, on-screen display. Includes a workbook section and service exercises.
For F and G line players. The SFT100 Workshop Manual. Describes the theory of the CED videodisc system. Covers in depth player operation and servicing. Well illustrated. Servicing fault and problem finding charts are very useful. 96 pages.