Speco Technologies VM-1201

Appendix B. Schematics and PCB Layout Diagram

1. Schematics Page 1 -- Main Board, Video Board.

2. Schematics Page 2 – Power Supply, Video Amplifier

3. PCB Layout -- Video Board, Circuit Trace

4. PCB Layout -- Main Board, Silk Screen

Contents

Main Disclaimer Table of Contents Page Audience Purpose 1. Introduction 1.1 Operational Specification 1.2 Functional Specification Page 1.3 Controls and adjustments 1.4 Physical Specifications 2. Theory of Operation 2.1 Main Power Supply Block 2.2 Video input block 2.3 Vertical & horizontal processor 2.4 Vertical Deflection Block 2.5 Horizontal Deflection Block 3 Troubleshooting Instructions 3.1 No Display, No Power 3.2 No Display, power output normal. 3.3 No Display (No Raster). 3.4 Vertical Deflection Failure Appendix A. Spare Parts List Page OPTION POWER BOARD VR BOARD CRT BOARD VM-901B/1201/1501B POWER/B CRT/B VR/B DY VM-901B/1201/1501B W/AUDIO MAIN BOARD