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Sony SRF-A100 User manual

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SERVICE
M
ANUAL
US Mo
de
l
Canadian M
ode
l
1!!!11
,1
••••
MICROFILM
S
PE
C
IFIC
ATIONS
Fr
e
quency
range FM
87.6-108
MHz
AM
530-
1,605 k
z
(566-
-1
87
m)
Antenn
as FM:
Teles
copic
antenna or headphone
cord
a enna
AM;
Buil!•i ferrite
ba
ante na
Speaker
App
rox.
7.7
cm
{3!" inches) dla.
Power
output
(at 10
°,
o
harmonic
distort
io
)
Speakers· 360 W---3&0mW
Headp
ones:
40
mW
..-40
mW
Ou
tput
Headphone-
jac
1ste
eo
minijack)
for
32
-
ohm
impedance headphones
Power
requ,rernents
4.5V de. three
s1~e
A ba
teru~s
(I
EG
des
ig a
10 w,
DC
I 4.5V Jae . a
ccepts
· Sony
AC
-1
20
rv
ac ower
ada
pto
(op 1onal) for
use
on
120
V
ac.
60
H~
S
ony
DCC
-127A ca
battery
co
rd
(optional) for use
Ilh
12V car
batte
ry
Dimens
ions
Approx.
22
8 100 •
38
.5
mm
t
/hid)
(9
4 P,u
inc
es)
inc
l. pro
jecting
parts and
co
trols
Weight
ApproY. 62
0g
(1
lb
202
1
i
ncl
. bat eries
Batte
ry
lite
You can
expect
the ollowIng
batte
ies to last
to
r the
indicated
number of hours.
er.
listening four
ho
rs
a day a! a normal
volurne.
t oug e
bu1l
-in spetil ers
or
headphones.
Eveready
0
015
batleries
Eve
ready
No
.
121
5
Heavy
Duty
bat
erl
es
Spea
e
s
16
28
Headp
hones
35
61
(h
our,
FM
STEREO
/AM
STER
EO
RECEIVER
SONY.
www.SteamPoweredRadio.Com
SRF-A100
FEAT
URES
The Sony SRF-A1
00
is
a compact size stereo receiver
which
allows you to en1oy
lis
tening
to
AM
stereo broadcasting
recently put i
nto
service. The rece
iv
er is capable
of
receiv
in
g
for all tour
AM
stereo broadcasti
ng
systems being used.
• AM BANDWIDTH/
FM
SENS (sens1t
1v1
1y)
switch
to
obtain
better recep
ti
on
from each
st
a
tion
under different conditions
• H
ig
h
-qu
al
ity stereo sound from the two bu
il
t-in speakers.
• The one-chip IC developed
by
Sony assures high sensitivity
and high reliabili
ty
.
• Listening
w1tn
optional
stereo headphones 1s possible.
HOW
TO USE
Follow
the
steps
1
to
6 in sequence
to
lune
in
the
st
at
i
on
.
1 POWER switch
Depress
to
turn
on
the
power
(
.:::.
ON).
To turn the receiver
off,
press it
again
to
OFF
).
2
BAND
selector
Select t
he
des
ired band.
FM
ST: For FM reception,
set
it
to
this
pos
ition.
The receiver operates
in
stereo mode
for
FM stereo pro-
gr
am
s
and
will
automatically
switch
to
mono
for monaural
progra
ms
.
AM
ST: For
AM
stereo program reception. The rece
iv
er
ope
r-
ates
in
stereo
mo
de
for
AM
ste
reo programs.
AM:
For
AM
monaural program reception. When
it
is hard
to
hear
th
e
AM
stereo program
due
to
noise,
set
,t
10
this posi-
tion
.
3
AM
ST MODE (
AM
stereo mode)
selector
Set
11
to
the
appropriate
po
s
ition
a
ccording
to
the
AM stereo
broadcasting system
being
used.
A:
For Harris, Mag
nav
ox
or
Motorola
System
8: F
or
Kahn Hazel
tine
System
If
you
do
not
kno
w w
hich
system is being used, you can deter-
mine
the
appropriate
posit
i
on
of
this
selector
by
comparing
the
qua
li
ty
of
the stereo reception
at
each position.
4
AM
BANDWIDTH/FM SENS (sensitivity)
selector
This
2-position
selector
has a
dua
l purpose: the AM BAND-
WIDTH select
or
in AM reception,
and
th
e FM SENS
selector
in
FM reception.
No
rmal
ly
set
this
selec
to
r
to
NORMAULOCA
L.
For
AM
reception, when you want
to
enjoy
th
e AM
st
ereo pro-
gram·s high-qualtty sound, set
it
to WIDE.
For
FM reception, if
th
e re
ception
is interrupted
by
adjacent
station
noise,
set
it
to
DISTANT.
- 2-
5 VOLUME
control
Turn
it
clockw
is
e
lo
gel
sound.
After
tuning.
adjust
the
vo
lume
10
your
preference.
6
TUNING
knob and TUNING indicator
Turn it
to
tune
in
the
desired freq
uency
observing
the
dial
scale. When a
signal
is received,
th
e TUNING
in
dicator
wil
l
lig
ht
up.
O Telescopic antenna
O TONE control
Turn It
to
ad
Just
the
tone
to
your prelerence.
O Carrying strap
attachmen
t
®
DC
IN 4.5V
(e
xternal
power
input)
jack
The
ac
power
adaptor
or
car
baltery
cord
can be connected
to
this 1ack.
G)
PHONES
jack (stereo minijack)
For
li
stening
with
o
ptional
headphones.
lD
Dial scale
~
Battery
compartment
(b
ottom)
)
l
J
www.SteamPoweredRadio.Com
( 1-1.
BLOCK
DIAGRA
M
(
(
SECTION 1
OUTLINE
- 3-
SRF-AlOO
www.SteamPoweredRadio.Com
SRF-AlOO I
2
·1
REMOVAL
·ca1
order.
• .
the
numen
R
emove
the
parts InNote:
CABINET REMOVAL
@
rear
cabinet
,,,
SECTION 2
DISASSEMBLy
<:
, '
)
)~/'
./c.:..,
'S-
;
1P
'
~
r---:;
2.6d6
/"';
~
~
main
board
0.
'
I
@
PTP3x
25
I
i .
~
,
z:_r
front
cabinet
7,,
@ 0
Pull
off
knobs.
~
- 4-
)
)
www.SteamPoweredRadio.Com
C
SRF-A100
2-2.
DIAL
CORD
STRINGING
1)
Dial
Cord Preparation
251 mm (9
'/•
inche
s}
2) Dial
Cord
String
ing
dial
drum
0
3)
Pointer
Settin
g
•
Afte
r
the
stringing,
tum
th
e
dial
drum
fully
counterclock
wise.
9-911-
825·52
dial
cord;
0.3
mm
d
ia.
dial d
rum
Set rhe
left
side of t
he
dial
po
inter
at
this
ma
rk.
- 5-
dial
p
ointer
Aft
er
sett
ing
di
al
po
inter,
app
ly a
locking
compound.
0
N
I!)
0
I!)
0
CX)
N
I
- I
r
u
C
0
www.SteamPoweredRadio.Com
SRF-Al
OO
IFM SECTION I
BAND
selector
switch:
FM
ST
FM
SENS
selector
switch
: D1STANT
FM
rf
signal
generacor
OOlµF
sec
ce
lesco,:,ic
SECTION 3
ADJUSTMENTS
VTVM
r-
se
---,t
~.......__"{
l~I
PHONES
22.
5
kH
z
frequency
deviation
by
400
Hz
sign
al
an
cenna l
ead
•
Repeat
the
procedures
in
each
adjustment
seve
ral
times
,
and
the
frequency
cove
rage
and
tracking
adjustments
should
be
finally
done
by
the
trimmer
ca
pa
citors.
I
FM
TRACKING
ADJUSTMENT
Adjust
for
a
maximum
reading
on
VTVM.
86.5
MHz
109.5
MHz
L2
CT2
-
6-
FM
FREQUENCY
COVERAGE
ADJUSTMENT
Adjust
fo
r a
maximum
re:iding
on
VTVM
.
109.5
MHz
86.5 :.!Hz
CT3
L3
)v
)J
www.SteamPoweredRadio.Com
C
RV2
VCO
Adjustmen
t
A)
R
egular
Meth
od
Procedur
e:
FM
rf
stereo signal
gener
ator
I
~
!
0.01
"'
r:-::::-7
<t=====,--i~
Carr
i11r
frequency;
Output
lev
el;
~
ant
enna
terminal
98.1
MHz
1
mV
(60
dB)
frequency
counter
_____
[a
I.
Connect
10
µF
capacitor
between
IC pin (I)
and
R24.
2.
Adjust
RV2
for
76
kHz±
100
Hz
on
the
counter.
B)
Simpl
e Meth
od
Procedure:
I.
T
une
the
set
to
the
FM
stereo
broadcasting
signal.
2.
Tum
RV
2 clockwise
or
counterclockwise
and
memorize
the
lighting-up range
of
the
stereo
lamp.
3.
Secure
R
V2
at
the
center
of
the
lighting-up range
of
both
turns
as
shown
below.
0
I \ / I
'
.....
_
.,,
/
'
.,
.....
_
--
cent
er
of
lighting-up
ranges
l1gh
ting-up range
7-
AM SECTION
I
AM
rf
s
ignal
ge
nera
to
r
30
9'
amplitude
modulation
by
400
Hz signal
P
ut
me
lead-wire
anrenna close
ro
the set.
•
Repeat
the
proc-edure~
in
each
adjustment
several times, and
the
frequency
co1
erage and
tiacking
adjustment<
should
be
finall)
done
bi
th
e
trimmer
cap
a
citors.
BAND
selector
sw
itch:
AM
(mono)
AM
BANDWIDTH switch: WIDE
1,400
kHz
CTI
Ad
just
for
a
maximum
re
adin~
on
vn
·
~1.
TRA
CK
IN
G
ADJUSTMENT
SRF-AlOO
www.SteamPoweredRadio.Com
SR
F-AlOO
AM
IF
ALIGNMENT
.
·
mum
readmg
.
1·
or a maxi
,\dJUSI
on
VTV~t.
45
0
kHz
JFT2
IFT
I
.
~
:~
~l;\j
~n:;.
I
i1
-
8-
VCO
Adjustment
Procedure:
AM
rf
sig
nal
I
~~!:J=
.
===-r--1_0.0T
µ
I---F-
_
__
-____:::c::!-----
:-~
--
.
450kHz
Carrier frequency. o
modulacion
)
Modular
ion:
;2
m V
(9
0
dB
Outpuc
level:
0 ·
0 05 V reading
on
f I 7 ± ·
Adjus
t LS or .
VTVM.
www.SteamPoweredRadio.Com
,-
--
_o_
__
-----
---
-.
I - I
:
---Of)
:
I I
I
I 0
,
__
_-
--
- -
I
I
I
I
I
-
----
--
__
,
VTVM
B
RV1
St
ereo
Distortion
Adjustment
Setting:
AM B
ANDWIDTH
switch:
WIDE
AM
ST
MODE
switch:
B
A)
Regular
Method
Procedure:
SRF-AlOO
AM
ri
stereo signal distortion
generator
~
Carrier frequency:
Output
level:
Modulation:
s
et
1,400
kHz
PHONES
50mV
(94
dB)
15
kHz,
30 %
(AM)
tel
escopic
antenna
lead
I.
Set
the
BAND
switch
to
AM.
meter
~
os
cillosc
ope
B
2.
Adjust
the
output
level
of
the
am
rf
ster
eo
signal
generator
for
dip
point
as
shown
in Fig. 1.
point
m
Fig. 1
3.
Set
the
BAND
switch-to
AM
ST.
4.
Set
the
VOLUME
knob
to
the
mechanical
cente
r.
5.
Adjust
RV
J
for
minimum
reading
on
distortion
meter.
B)
Simple
Method
Adjust
RV
1
to
the
mechanical
center
in
rotation
angle.
-
9-
www.SteamPoweredRadio.Com
:»Kt-AIUU
4-
1.
MOUNTING
DIAGRAMS
Semiconductor
Lead
Layouts
2SA1048-GR
258811
2SC2785
OTC124ES
CX857
;.·
~
o,,
~-1
s,
;:
"'7
~-~I
1
2
'I
(To
p
v,ewl
CX20075
1Marktn,;i s,de
v,aw)
No
te:
TA7331P
TA7342P
CUI~~
o,
Lf1!
dot-
1 , i "
1S1555
1T261
GL9PA21
cathode
anooe
•
o--
:
parts
extra
cted
from
th
e
compo
n
en
t side.
• - :
part
s e
xtracted
fro
m
the
con
du
ctor
si
de
.
• [ ] - :
indi
ca
tes
side
ide
nt
ified
with
pa
rt
nu
mber.
• : B +
pa
tt
ern
•
-•-
: si
gn
al
path
•
__
.,_.
:
L-CH
sig
nal
path
•
-••--+
:R-CH signal p
ath
SEC
TION 4
DIAGRAMS
-10
-
-4--
:::::A!..__....L
__
~B:..___-1-
___
,__---1._
1
2
3
4
5
6
7
8
9
0
IC
D
ORY
8ATT
SI
SE
"
AA
"
!t
EC
OES
IG
NATIO
N R6l
3PCS
,4.5V
•1•1
--
.- - - 4---
J (
I
PHON
ES
I
IL--
--1f--+
--o
I
'
'
,
L----
J2
~
(t)-
~- 0
S4
~~1
ST
\t
OOE
9
I
<l
t :[
A
I
.Cl.
F"\t
TEL
ANT
Il
~
T
l
r
I
l,-
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1
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