Schematic Diagram - Main Section - Sony ICF-CD873 Service Manual

Fm/am cd clock radio
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6-5.
SCHEMATIC DIAGRAM – MAIN Section – •
See page 31 for Waveforms.
See page 37 for IC Block Diagrams.
– 27 –
– 28 –
– 29 –
ICF-CD873
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.
• C : panel designation.
Note:
Note:
The components identi-
Les composants identifiés par
une marque ! sont critiques
fied by mark ! or dotted
line with mark ! are criti-
pour la sécurité.
cal for safety.
Ne les remplacer que par une
Replace only with part
piéce por tant le numéro
number specified.
spécifié.
• U : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
[
] : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD PLAY
• Abbreviation
AUS : Australian model
CND : Canadian model
IT
: Italian model
– 30 –

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