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SECTION
5
DIAGRAMS
Note on Schematic Diagram:
@
All capacitors are in uF unless otherwise noted.
pF: uur
5OWV
or
less are not
indicated
except
for electrolytics
and tantalums.
@
All
resistors are in
Q and
,W
¢ or less unless otherwise
specified.
@
Tota! current is measured with no cassette installed.
@
Power voltage is de 9 V and fed with regulated dc power
supply from external power voltage jack.
e
Voltages
are dc with
respect to ground
under
no-signal
(detuned) conditions.
RADIO
SECTION
no mark: FM
(
): AM
AUDIO
SECTION
no mark: PB
(
):
REC
((
):
AMS
©
Voltages are taken with a VOM
(10 MQ/V).
Voltage
variations
may
be
noted
due to normal
produc-
tion tolerances,
@
Signal path.
=
:FM
XD
:PB
xX»
: REC
5-1.
SEMICONDUCTOR
LEAD
LAYOUTS
BA338
2SA952
123456789
|
Ec
8
BA5410
TLR124
tong i
anode
cathode
DTA114ES
DTC114ES
DTC143TS
i
cathode
t
|
&
+
ode
c
&
=
188119
2S8A733-K
2S8C1815GR
28C2001
28D 1387
1
2
3
5-2,
SCHEMATIC
DIAGRAM (Tuner Section)
(TUNER BOARD)
ANTI
TELESCOPIC
ANTENNA
188133
188133
—,\S
bat
=O
oO
NyeclQ
N
Jala
<
m
oO
s1-1
$1-3
@
IC Block Diagram
C1
CXA1238S
on
eee
Ie CXAT
2385
Yo
FM/AM FRONT- END.
FM/AM IF AMP. DET
FM STEREO DEMODULATION
IC1
CXAI238S
1a)
MONO:
0.6 (0.6)
St:
10)
\
1.0010}
0.9
(0.9)
"C7 47n 10V
R7 220k
RS 220k
Sl;
270p (p.p)
CV.
13U3) 4
vei
[FINE TUNING
2sc2410s\\f)
100k B
DEPENDING
ON
POSITION
C30 20p CH
~=R20 700
OF NR
MIN:
:1,2 (1.2)
Q2
CENTER : 0.6 (0.6)
FINE
TUNING
MAX
+0{0)
oO 4
Zw
oO
O
i
oO
ar
ee
ae
ea
rd
TE
aga
\N
5
[alee
[on
+
a
a
© ee ©)
Ik
x
se
Z
odcdt
LH
kb
™
WwW
o
eso
SF m
< <
aa
=
C7421)
(3)
(2)
Ge)
R10
10k
1.70.7)
x
oO
e)
>
ox
RV1
22k
i cis
7 104 50V
R16
22k
C20
R15
10k
KO
4.2
(4.2) es O| ne
g9mA
(7mA)
11
Refer to page 9.
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