Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
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4.1 Part Numbering<br />
As this section refers to individual components, you should be familiar with the<br />
part numbering scheme used. Although parts on the various circuit boards and<br />
circuit board drawings may be marked with identical reference numbers, each<br />
component in the transmitter has a unique part reference number.<br />
The circuit boards and component placement drawings use designators such as<br />
“R1”, “R2”, and “C1.” These numbers represent only a portion of the full part<br />
numbers (as shown on the schematic). To find the full number, refer to the chart<br />
below. R401, for instance, is marked “R1” on the Metering board and on its<br />
component placement drawing.<br />
Circuit Name<br />
Part numbers<br />
Audio Processor 0-199<br />
Stereo Generator 200’s<br />
RF Exciter/Synthesizer 300’s<br />
Metering/Protection 400’s<br />
Motherboard 500’s<br />
Display 600’s<br />
Voltage Regulator 700’s<br />
<strong>Power</strong> Regulator 800’s<br />
RF Predriver 900’s<br />
Chassis Wiring<br />
RF <strong>Power</strong> Amplifier<br />
RF <strong>Low</strong>-Pass Filter<br />
1000's<br />
1100's<br />
1200's<br />
Illustration 4–1 Component Part Numbering<br />
4–2 FM30/FM100/FM250 User's Manual