Sony ICF-S79 Service Manual page 9

ICF-S79/S79L/S79V
• See page 11 for Waveforms and IC Block Diagrams.
4-3. SCHEMATIC DIAGRAM (ICF-S79V)
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 / W or less unless otherwise
4
specified.
•
¢ : internal component.
•
: panel designation.
•
: B+ Line.
•
: adjustment for repair.
• Power voltage is dc 4.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : FM (TV 2 – 6 ch)
( ) : AM
<< >> : TV (7 – 13 ch)
• 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.
: FM
: AM
: TV
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