SONY SRFPSY04
Service Manual

4-3.

SCHEMATIC DIAGRAM

• See page 13 for Waveforms.

• See page 14 for IC Block Diagrams.

SRF-PSY04

Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise • • • • • • specified. ¢ : internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from battery terminal. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

no mark : FM ( ) : AM 〈〈 〉〉 : POWER OFF • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. • Circled numbers refer to waveforms. • Signal path. F : FM f : AM

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