Schematic Diagram - Tuner Section - Sony CFS-616S Service Manual

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6-4. SCHEMATIC DIAGRAM – TUNER Section –
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• IC Block Diagram
IC1 CXA1238S
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FM FRONT-END
AM FRONT-END
REGULATOR
MPX
REGULATOR
VCO
1/2
PD1
COUNTER
1/2
PD2
COUNTER
AUTO
BLEND
MONO/STEREO
MUTING
SELECT
DECORD RIPPLE
AMP FILTER
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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
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specified.
• ¢ : internal component.
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
( ) : MW
m
< > : SW
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F: FM/SW
f: MW
• Abbreviation
EA: Saudi Arabia model.
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CFS-616S
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FM IF/
DISCRI
AM IF/
DET
TUNING
INDICATOR
BAND-PASS
MUTE
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