Sony ST-88 - Diagrams: FM;AM Circuit Boards; FM;AM Front-End;IF;MPX Board Mounting; Schematic Diagram of Tuner Circuitry

5-2. MOUNTING DIAGRAM — Fm (A-m) Front-End/!-F Amp/MPX and Preamplifier Board —
— Conductor Side —
Bor Antenna
Transistors and
Adjustment
Parts
Location
401
ono
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:
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L103
Lid2
Q103
Qio1
Q203
CTiO1 CT40I
CT102 CT402
WHT. |
To
BANO
SW
(S801)
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io
0.0:
|| sagt Pere
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ed A eee
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i
board, R701
To attenuator board,
owyr-8
k 2
rsog,! R503 120k R506 120k
tov i C50!
nev . 33/25V
ofan ev
Pgs
0.6V
Q501
Q503 2SC632A
“10¥”"" D3 01sD504
| ele {T22A
BRN
To MODE Sw (S802)
To MODE SW (S802) —GeN_/ To BANO SW (S801) —»——-244_/
To power supply board, R701
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ec:
qo
j-e
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ace
2SK23A 28K42 ee 28¢710 181555
2SC633A 1SSBIM
2SC632A
2SC634A
—14—
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HF 4./25N
R305,
tke f°
Q301 RWe2 82k
2SCE33A 2303 22x
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or 47/25N
( Path WHT
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pe 1 R223
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er
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“47k
D201 @D202
IT22AF1T22A
C234
BLK
To BAND SW (S801)
To BAND SW (S801)
Note: Audio signals are expressed
C224.4.7/25)
o—{r-~
<
ony
é ?
To AFC SW
(S803)
«
WHT/BLK_ To TUNER INPUT
meter (M201) Q
To BAND SW
($801)
To ground, power
supply board
To TUNER INPUT meter (M201) @
in “dB” referred to {
0.775 V(0 dB) 400 Hz, receiving fm rf signal of 98 MHz
{1000 pV (60 dB), 75 kHz (100 %) Mod. ).
[ ]:
(.. dB ):
stereo operation