Sony Shower Mate ICF-S79, Руководство по обслуживанию

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– 9 – – 10 –
ICF-S79/S79L/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
/
4
W or less unless otherwise
specified.
•
¢ : internal component.
•
: panel designation.
•
B+ : 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
under no-signal (detuned) conditions.
no mark : FM (TV 2 – 6 ch)
(
) : AM (MW)
[ ] : LW
4-2. SCHEMATIC DIAGRAM (ICF-S79/S79L)
•
See page 11 for Waveforms and IC Block Diagrams.
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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 (MW/LW)