Schematic Diagram - Tuner Section - Sony CFD-S28L Service Manual

6-5. SCHEMATIC DIAGRAM – TUNER Section –
Q Q
3 7 6 3 1 5 1 5 0
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
• See page 45 for IC Block Diagrams.
x a o
y
. i
– 27 –
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8
Q Q
3 7 6 3
u 1 6 3
.
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2 4
9 9 8
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
specified.
• : internal component.
¢
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveform are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : MW
[ ] : LW
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveform is taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveform.
• Signal path.
F : FM
f : MW/LW
1 5 1 5 0 8 9 2 4
(Page 37)
(Page 33)
• Waveform
1 IC2 @º XIN (FM mode)
500 mV/DIV, 5 µs/DIV
m
c o
– 28 –
2
9 9
1 / W or less unless otherwise
4
9 8 2 9 9
1.8 Vp-p
13.3 µ s