Read Sony ICF-S79 / ICF-S79L / ICF-S79V Service Manual online
4-3.
SCHEMATIC DIAGRAM (ICF-S79V)
•
See page 11 for Waveforms and IC Block Diagrams.
– 11 –
– 12 –
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.
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.
•
: panel designation.
•
: B+ Line.
•
: adjustment for repair.
•
Power voltage is dc 4.5 V and fed with regulated dc power
supply from battery terminal.
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)
(
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 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
•
Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
Voltage variations may be noted due to normal production
tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
: FM
: AM
: TV
: AM
: TV
ICF-S79/S79L/S79V
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