How to use this section of your manual

Welcome to the world of the X-Y monitor, an electronic device that strikes terror into the heart of many a technician. The main reason it is so intimidating is that the Vector Beam, Quadrascan, or X-Y monitor is TOTALLY UNLIKE the Rasterscan monitor or T.V. set as you probably call it. Since many technicians are generally unfamiliar with the circuit operation, they may not be able to figure out when a symptom correlates with (points to) a particular circuit. If you are a technician, this...

The Power Supply

The best way to begin explaining the innards of the X-Y monitor is at its beginning or the inputs to the monitor. Ignoring the ground or common tie points for many of the components, which represents zero voltage, there is 30 volts AC going in pins seven and ten of P100 the input jack. These voltages meet at DB100 which is a device that has four diodes in it. The 30 volts AC means the voltage and current alternate or jump up and down going positive and negative with zero voltage in between....