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Note For Printed Wiring Boards And Schematic Diagrams; Schematic Diagram - Fm Tuner Section - Sony HCD-EP50LIV Service Manual

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Q Q
3 7 6 3 1 5 1 5 0
6-5.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
W : indicates side identified with part number.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
.
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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
4
specified.
: internal component.
f
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : 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
[
] : TAPE PLAY
<
> : RECORD (ISS 1)
〈〈
〉〉 : RECORD (ISS 2)
: Impossible to measure
• 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
E
: TAPE PLAY
a
: RECORD
J
: CD PLAY
x
a o
u 1 6 3
y
i
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8
9
6-6.
SCHEMATIC DIAGRAM – FM TUNER Section – •
(INCLUDED IN MAIN BOARD)
0.001
0.047
0.047
0.047
0.047
0.001
0.047
0.047
FM TRACKING
FM RF AMP/MIX/OSC
B. P. F.
1 2 3
Q
Q
3
7
6
3
1
5
1
c o
.
19
19
2
4
2
9
8
See page 28 for IC Block Diagram.
0.001
FM OSC
L901
3.4
FM FREQUENCY
0.8
COVERAGE
0.047
0.047
FM OSC
BUFFER
L902
FM RF
0.047
L902, TC901
IC901
TA2132AF
IC B/D
0.047
1
5
0.001
1SS133T
4
3
0.047
5
0
8
9
2
4
9
8
m
HCD-EP50LIV
9
9
i
OSCO
i
VCC
G
0.047
MAIN
BOARD
(1/3)
(Page
20)
i
GND
i
GND
i
GND
i
IF OUTPUT
2
9
9
i
RF INPUT
i
VT

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