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Sony CFS-B31 - Schematic Diagram - Tuner;LCD Section; Circuit Schematics and Connections

Sony CFS-B31
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CFS-B31/B31L
5-4.
SCHEMATIC
DIAGRAM
TUNER/LCD
SECTION
*
See
page
8
for
IC
Pin
Function.
(IC901)
1
2
3
4
5
6
7 8
93
10
11
12
13
14
15
16
17
18
*
(_____]
:pane!
designation.
ANTI
¢
IC
Block
Diagram
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TR
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D
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Peay
BH
2|
#
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electrolytics
id
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IN
AM
IN
FM
RF
REG
FM
OSC
AFC
AM
OSC
MUTE
FM
BISCRI
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REG
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GNB
IF
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and
tontolums.
|
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leg
cone
VCO
CHECK
PILOT
BET
8)
25
e
All
resistors
are
in
Q
and
1/4W
or
less
unless
otherwise
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N
7
Hp
Eh
oMz
&
specified,
RIS.
2.2k
!
°
A
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component,
|
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alll
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Geammece
eas
gn
tl
SG
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eter
he
ips
<=
tale
gt
S
5
5
~
ia
g
*
Voltages
and
waveforms
are
dc
with
respect
to
ground
+
z
under
no-Signal
conditions,
gr BS
.
:
:
astbas
no
mark:
FM
-
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MUTE
co
MUT
ING
\;
AM
100°
6,
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Se
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.
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BAND
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4)
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o
VOM(Input
impedance
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F
diay
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9
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3
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INAIABM
Voltage
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SWEGHING
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tolerances,
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2
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Signal
path
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Bac
Att
ttt
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5.7
Switch
27
TF
=
ai
7
=
3
[tu
cee
|
Bae
Si Pe
ss
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z
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:FM
ald
fy
2
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ae
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leafs
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SWITCH
S
5
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=
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|
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Lips
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0903
|
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|
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uA
BUFFER
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«
1
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1!
7
L902
2.2sH
=
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ot
990
28K6794-T
1
=
2
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LPF
1.4
H
3
R902
10x
c901
1
BRY
BATTERY
2
SIZE"AA”
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BES1GNATION)
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SECTION
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SE
09
—15— —16—
47

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