Sony SRF-29 - Page 3

SECTION 3
DIAGRAMS
1 2 3 4 5 6 7
PRINTED WIRING BOARDS
Jl
(HEADPHONES)
L2
AM FERRITE— ROD ANTENNA
[SOU E DONOR ERO NIE RENN IEY YNNQ00Q0909Q900090 0000000
$2
BAND
FM
AM
S|
FM_SENS
DX ST
DRY BATTERIES
SIZE “AA”
(IEC DESIGNATION R6)
2PCS,3V
LOCAL MONO
@ Semiconductor Lead Layouts
CXA1238M LA4533M
(Top view)
A
SCHEMATIC DIAGRAM
1 2
SRF-29
a
=,
cd
Se
ET
APES
NN
RR
I
ET
III
=
el
[MAIN
BOARD]
x
Te
ele
a
eae
|US,
Canadian
MODEL
|
MODEL
|
22p
j
24p
[5p
|
AEP,
Italian,
E
MODEL
|
24p
|
27p
|
8p
|
mes
L2 FERRITE-ROD
ANTENNA
|
SI
4
aes
car
CT2
#C5
R633
CTS
CSCS
STA
FM
SENS
aaa
Rs
CVI-1
Q
CVI-2
=
a)
AM
OSCI"_
iC
Si
ni
tags)
Aas8
|
3..|
pear
aed
ez
FM
en
1
Ox
|
Cl
20p
C3
30p
|
a
ei
Osc)
ec7
7
|
|
!
Dees
ete
Ao
RT.
{LOCAL
}
c2
AEP
Italian
US,Canadian
22p
ak
SS
E
MODEL
MODEL
:
|
|
STEREO
|
I
|
i
i
Mono
!
fc
rte
|
CXAI238M
FM/AM
FRONT-END
IF
DET
MPX
FM
LF/
DISCRI
>
Emseaem
fa
a
AUTO
3
{
DET
|
aunt
ae
(0)
ie
C32
L6
u
BAND
PASS
H
CIRCUIT
C27]
RI7
~—-
C30
a
MUTE
il
rien
OW
33
1
206V
TET
<q
|
|
J
on
Bano
ahi
Roo
|
{HEADPHONES}
cae
Wo
LUFIN
€
me
Ie
a
ee
|
P
(2)—)
wish
P
aes
i
\)
()
ts
=
BATT
$3
DRY
BATTERIES
AEP,
Italian
CEP
HON
POWER]
4g
AS
SIZE
“AA”
CF
10.7MHz
E MODEL th, ) + ON ps (IEC DESIGNATION R6)
C25 1/50V RI6 f
8.2k
OFF
|
R24
0
- All capacitors are in uF unless otherwise noted. pF: u uF
5OWV or less are not indicated except for electrolytics
and tantalums.
- All resistors are in Q and 14 Wor less unless otherwise
specified.
* “A: internal component.
- [] : adjustment for repair.
- Power voltage is 3V dc and fed with regulated dc power
supply from battery ternminal.
- Voltage and waveforms are dc with respect to ground under
no-signal (detuned) conditions.
no mark : FM
( ): AM
Voltages are taken with a VOM. (input impedance 10 MQ)
Voltage variations may be noted due to normal produc’
-tion tolerances.
Signal path.
c : FM