Sony Corporation of America. Sony Service Manual, Microcomputer SMC-70G. Cover shows B & W photograph of unit. The Table of Contents includes Operation, Service Information, Circuit Description, Block Diagram, Printed Circuit Board and Schematic Diagram, Troubleshooting, Diagnostics, Sygnature Analyzer Value, Alignment, and Spare Parts and Fixture. The Sony SMC-70G "GENLOCKER" microcomputer utilizes a circuit that enables GENLOCK synchronization of the computer output to a video signal.