Sony ST-JX295 User manual

SERVICE MANUAL
ST-JX290: This set is the tuner section in
SEN-290 (CND, E)/SEN-390 (US).
US Model
E Model
ST-JIX295/IX390
Canadian Model
ST-JX295
Photo: ST-JX390
SPECIFICATIONS
FM tuner
Frequency range
Antenna terminal
87.5 — 108 MHz
300 ohms, balanced
75 ohms, unbalanced
iF 10.7 MHz
Sensitivity
S/N 50 dB sensitive
22.1 dBt (7 nV)
42.1 dBI (70 2V)
19.5 dBf (5 pV)
Usable sensitivity (IHF)
80 dB (mono), 75 dB (stereo)
0.3% (mono), 0.5% (stereo) at 1 KHz
Signal-to-noise ratio
Harmonic distortion
Separation 40 dB (1 KHz)
Frequency response 30 Hz — 15 kHz “20 dB
Selectivity 55 dB (400 kHz) :
AM suppression ratio 54 dB
Image response ratio 50 dB
IF response ratio 90 dB
Spurious response ratio 70 dB
Automatic tuning threshold 17.8 nV (30 dBf)
Output 775 mV, 4.7 kohms (at 75 kHz deviation) (ST-JX390)
Sony: Corporation Printed in
AM tuner
Frequency range
Antenna
IF
530 — 1,710 kHz (10 kHz)
531 — 1,710 kHz (9 kHz)
530 — 1,710 kHz (10 kHz)
531 — 1,602 kHz (9 kHz)
Loop antenna, External antenna terminal
450 kHz
\usica Model
E Model
Sensitivity (999 kHz or 1,000 kHz)
Signal-to-noise ratio
Harmonic distortion
Selectivity
Frequency response
General
Power requirements
Power consumption
500 »nV/m (when the loop antenna is in use)
54 dB (mono, normal)
0.5% (mono, normal)
35 dB (9 kHz, normal)
38 dB (10 KHz, normal)
40 Hz — 3.5 kHz +8 dB (normal)
120 V AC, 60 Hz
-JX
8 W ST-JX390
Dimensions Approx. 430 x 80 x 260 mm (w/h/d)
(17 x3 %4x 10 “I, inches)
Weight Approx. 2.4 kg (5 Ib 5 oz) (ST-JX390)
Approx. 2.0 kg (4 Ib 7 oz) (ST-JX295)
Supplied accessories (ST-JX390)
Remote control cord (1)
Connecting cord (1)
FM wire antenna (1)
AM loop antenna (1)
Design and specifications subject to change without notice.
FM STEREO/FM-AM TUNER

ST-JX295/JX390
SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:
Check the antenna terminals, metal trim, ‘‘metallized”
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5mA (500 microampers). Leakage
current can be measured by any one of three
methods.
1. A commercial leakage tester, such as the
Simpson 229 or RCA WYT-540A. Follow the
manufacturers’ instructions to use these instru-
ments.
2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
voltmeter
(0.75 V)
—= Earth Ground
Using an AC voltmeter to check AC leakage.
TABLE OF CONTENTS
section Title Page
Specification Coe eee ree rere renee eee ee sere ee eee eee ees eee OHeseeeseene ]
Safety Check-out POUTITTRTTTTILESTTTITITI TELE TILT E TTT TTT TT TT 2
A HGENERRE Git ees aes 3
2. ELECTRICAL ADJUSTMENT
FM Section POUTTETETITITITITETITIET TEES TTT TT TILT T TTT TTT) 4
AM Section POUT TULTITISETITETIT TUTTLE LITTER TTT TTT TTT 4
3. DIAGRAM
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5. ELECTRICAL PARTS LIST -v:-ssssseseeoe 20
To change the AM tuning interval
The AM tuning interval is preset at the factory to 10 kHz
to match the frequency allocation system of your
country. To change the interval to 9 KHz, proceed as
follows.
1 Depress the POWER switch to turn on the unit.
2 Set the BAND FM/AM selector to AM.
3 Press the POWER switch to turn off the unit.
4 Hold the TUNING knob in the “+” position, and
depress the POWER switch to turn on the unit.
To reset the interval to 10 kHz, follow the same
procedure.
Note
When the interval is changed, all preset stations which
you have memorized using the numeric buttons will be
erased from the memory. After changing the interval, be
sure to preset the stations again.

ST-JX295/JX390
SECTION 1
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ST-JX295/JX390
SECTION 2
ELECTRICAL ADJUSTMENT
FM SECTION
e@ FM Discriminator Alignment (NULL check)
Setting :
FM RF stereo signal
generator
Carrier frequency : 98 MHz
Output level : 60 dBy
FM ANTENNA 3002
terminals
VOM
TP1 (DC range)
NULL terminal
Procedure :
1. Tune the set to 98 MHz,
2, Adjust T21 for 0 V reading on the VOM,
Note: FM TUNING LEVEL adjustment should be macle after
FM discriminator alignment,
e FM TUNING LEVEL Adjustment
Setting :
FM RF stereo signal
generator
Carrier frequency : 98 MHz
Output level : 25 dBy
FM ANTENNA 300Q
terminals
Procedure :
1, Tune the set to 98 MHz,
2, Adjust RV24 so that the TUNED LED goes on,
AM SECTION
e AM Tuned Indication Lighting Level Adjustment
Setting :
AM RF signal
generator
Put
the
lead-wire
antenna close to
ye the set,
C=
30% amplitude
modulation by
400 Hz signal
Output level : 58 dBy
Procedure :
1, Tune the set to 1,050 kHz (US, CANADIAN), 999 kHz (E),
2, Adjust RV22 so that the TUNED LED goes on,
@ FM Stereo Separation Adjustment
Setting :
FM RF stereo
signal
generator VTVM
ANTENNA ST-JX295 : CNJ4 (1 or 3 PIN)
FM ANT (3002) S7T-3xX390: PJ1
Carrier frequency : 98 MHz
Output Jevel : 60 dBy
Procedure :
Tune the set to 98 MHz,
FM. stereo
signal generator
output channel
VTVM VTVM
connection reading (dB)
Adjust OM for
minimum reading,
Adjust RV21 for
minimum reading,
L-CH Stereo separation : (A) = (B)
R-CH Stereo separation: (C) ~ (D)
The separations of both channels should be equal,
RV22: Tuned Level Adjustment (AM)
RV24 : Tuned Level Adjustment (FM)
T21 : Null Adjustment
RV21 : Stereo Separation Adjustment

ST-JX295/JX390
SECTION 3
DIAGRAMS
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3-2. PRINTED WIRING BOARDS
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Tuner Board]
® Insert the cord to the connector fitting Pin @
of the cord in accordance with the white mark
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CN701 Fi TO CONNECTOR ,- t CN601
BOARD CN602 4 ST-JxX390 b-—-——
ST“JX295L ae
45>
=
O=

ST-JX295/JX390
@ FE1(Front End) Schematic Diagram
ROIO 68
2503494 ROO 220k
OF OUT
@ Wave Forms
: 0.25y Sec
0.14 Sec |
; | 0.14p Sec
| 2.6mSec
=

ST-JX295/JX390
3-4. SCHEMATIC DIAGRAM
— Control and Power Section —
Note :
® All capacitors are in uF unless otherwise noted.
pF: uyF 50 WV or less are not indicated except for
electrolytics and tantalums.
e
All
resistors
are
in
Q
and
%
W
or
less
unless
otherwise
=
=
%
~
a
aa
a
a
pin
ea
Tae
eae
eine
Se
ee
ee
ity
ee
Aa
eet
Ga
ee,
Seek
ee
7
specified.
FL701
FLUORESCENT
INDICATOR
TUBE
ST-JX390
|
=
a
eer
ey
ee
ee
8K
eye
°
A:
internal
component.
86
«7G
5G
46
36
26
4G
[CONTROL
BOARD)
]
[POWER
BOARD)
ar
e
-EWel-
:
nonflammable
resistor.
pies
see
alee
ee
eee
eee
Saree
©
-fwU}
:
fusible
resistor.
|
ci
Fee wm ee mM enw eww mew OTe “
| = \ ! US MODEL 14 |
PT504 !
Note
:
Note
:
,
|
5
3
Ds02
1
ROWER
1
S41
4
The
components
identified
Les
composants
identifies
\
1
>
o
aoe
|
Fe
,
by
mark
A
A
dotted
line
|
par
une
marque
A\
sont
|
_
in
aa
rt
|
with
mark
are
critical
critiques
pour
la
securite
|
1!
.
1
for
safety.
Ne
les
remplacer
que
par
|
y
ee
aa.
a
~
13.2
1!
i
3
2
Pal
4
.
a
Replace
only
with
part
|
une
piece
portant
le
numero
|
'
AG
130V
rae
1
|
|
number
specified.
specifie.
I
Oy
ATE
'
UNSWITCHED
|
1
|
CN1 100W MAX
;
|
LT
+1
510
Gf
c508
4|
C507
t
ie
|
1
MUTING
col
2.2
Ay
pone
ALY
a
F508
|
i
°
reo
B+
Line.
|
a
.
022
SOV
70.
V
.
022
\
°
same:
B—
Line.
“We
E710
330
|
43V
513
4
C512
4
1
|
|
.
2
=
1
e
C._]:
adjustment
for
repair.
2.
R709
1k
__
LIGHT
ON
:0
1
:
5V
R505
D506
aay Sov
us
beoM
C504
1
1
!
Vv
,
Z
Eley
eres
D714
$705
$710 S714
S717
l
@
Boos
T80e
=
E0AD2~30
509
ie
®
Voltage
and
waveforms
are
de
with
respect
to
ground
7
US1060M
Senene
—
pp
50
1
14
|
under
no-signal
(detuned)
conditions.
-30V
4
0
SHIFT
oF
TO
TUNER
D504
!
'
VF
|
BOARD
VF
=]
B
IS
|
1k
172¥
USTO60M
\
'
®
no
mark
:
FM
vF
IL
;
TUNING
CNJ3
VF
rB—|
DS0S
til
°»
(
)
:AM
@®
REMOCON
ls
s705
|.
$713
S716
|
any
—-
4
£0A02-06
ma
|
:
’
=F
AC
4V
‘&
®
Voltage
are
taken
with
a
VOM
(Input
impedance
10
MQ).
a
orNER
[aI
—KH
9
MEMORY
+
4
usideou
aot
4
Voltage
variations
may
be
noted
due
to
normal
production
BOARD
|
MUTING
Lit
East
h
tolerances.
one
3708
|
|
a,
a
eee
[Ap
oo
ot
Sea
fall
oe
7
|
©
Wavefroms
are
taken
with
a
oscilloscope.
1
—{~
8
|
-{WEMORY
SCAN
|
;
;
Fe
MODEL
(Ct
a
Ne
hae
4
Voltage
variations
may
be
noted
due
to
normal
production
RESET
Vv
4
:
:
:
BV
|
[CONTROL
S$]
Oe
le,
<5
ee
AC
ouTteT]
|
!
tolerances.
Fa)
{
power
ee
ae
v
AC
120V
60Hz|
|
!
i" . Co
©
Circled
numbers
refer
to
wavefroms.
rien
g
J
|
=
Hr
;
|
TRANSFORMER
j
UnOOW
MAX.
|
1
|
TMP47C670N-
1282
¥
ie
ae
80
;
1
°
=
path.
®
one
DISPLAY
CONTROLLER
i
;
al
eff
ee
ty
|
FM
TO
TUNER
=)
@
=
CNS
t
1
|
BOARD
cLK
"4
|
tg
|
est
|
80
:
[6
{AUTO
TUNING}
BAND
FM/AM],
‘
<a
.
:
{
[Service
Note]
is
p79
Musiaéou
us
060M
Wysiogou
l
‘
0.07
400V
ire
are
US1060N
\
Ly
|
4
F
IF-SO
|
|
INDICATOR
TUBE
ALL
LIGHT-UP
MODE
Ge
STG
OL
ls
:
peeies
|
'
>
oon
it
|
When
turning
POWER
switch
on
while
pressing
PRESET
1
a
mt
i
Te
;
ner
i
'
:
|
!
L
tia:
cP
:
A
|
'
uf
1
i
me
ED
gee
ae
RB
SS
I
ewe
rw
me
wee
men
owe
4
and
AUTO
TUNING
KEYS
simultaneously,
all
the
segments
g
eebeeeeeees
Gace
t
|
ysvoeou!
Miaka
rset
ee
haces
Sb
ca
a
ea
A
acpi
a)
of
FL701
will
light.
—|
Rte
!
----4
nae
dee
ee
sears
ede
Veet
Ne
ee
Vege
a
ee
a
yc
ees
Ae
pee
ae
Be
ee
oe
age
ee
all
ana
CP701
G76
CP702
+
Be
a
MG
oe,
erp
ee
he
ge
5
Sage
eg
Meat,
hate
wether
poke
Re,
Ciasy
Go
ba.
cat:
lag
1
10k
LIGHT
ON
:0_-~
:
Cae
T
$1-5x295
LIGHT
OFF:5
|
| jcnso2
|
-30V
[ AC VF |
]
|
AC
VF
|
{ -30V REMOCON @
roe
G78
TO8E_
Be
ec
|
| D.C 5V TO TUNER BOARD
—
REMOCON
43V
CNJ3
|
eee
ee
C8
LN
+
ee
ee
eee
|
GND
GND |
| 13V |
|
: Ie |
|
| (SYSTEM CONTROL] ,
|
| CN601 |
L CH L CH
| [oo GND 1 2 GND ® |
R
CH
3
R
CH
|
l | Q601; 602 TO TUNER BOARD
BAIL4M
CNJ4
RESET
$e 8d, ay Pac a nek, Sepa eta Cr et ae, eee tune gee a eh eee fem ees Moh ee
='13— —19— uIO=

ADDITIONAL
iE
INFORMAT!
a SECTION 4
EXPLODED VIEW
NOTE:
@ The mechanical parts with no reference @ Due to standardization, parts with part
number in the exploded views are not
supplied.
® The construction parts of an assembled
part are indicated with a collation num- r
ber in the remark column.
number suffix -XX and -X may be dif-
ferent from the parts specified in the
components used on the set.
Color Indication of Appearance Parts
Example:
(RED) ...KNOB, BALANCE (WHITE)
The components
mark
ST-JX295/JX390
identified by
or dotted line with mark
are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque
sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spéci fé.
ae
& —10
Description
Remarks _
PLATE (ST), GROUND
(JX295:US ,Canadian)
e Items marked “*"’ are not stocked since A
they are seldom required for routine t
service. Some delay should be antici- Cabinet's Color Parts’ Color
pated when ordering these items.
(1) ST-JX295
ST-JX390
| iin
ST-JX390
not supplied
net supplied
No. Part No. Description Remarks No. Part No.
] 4~922-790-11 KNOB (TUNING) 21 *4-924-988—1 |
901 *A~4333~-249—A
2 X-4905-263-1 (JX295)...PANEL ASSY, FRONT
.
X-4905~-264—]
(JX390)...PANEL
ASSY,
FRONT
*
A-4333-250-A
*A~4333-480~—A
3
7-682-548-04
SCREW
+BVTT
3X8
(S)
*
A—4333-481
~A
4 4-91 7-460-01 (JX390)...KNOB, POWER
5 7-685-534-19 SCREW +BTP 2.6X8 TYPE2 N-S 902 *1-630-2 99-1 ]
6 4-9] 7-050-41 CASE 903 *] -630-297-11
7 3~704-366-01 SCREW (CASE) (3X8) 904 *A-4303-176-A
*A-4303-177-A
8 *4-917-058-01 (JX295)...... PANEL, BACK #430 3-174-A
*4--917-065-01 (JX390:US)...PANEL, BACK * A=-4303-175-A
*AR —!| - .
4-~-917-065—11
(JX390:E)....PANEL,
BACK
911
A.1-526-565~12
9 7-685-646-79 SCREW +BYTP 3X8 TYPE2 N-S
10
7-682-550-04
SCREW
+BVTT
3X12
(Ss)
ee
eee
1
*4-~363-146-31
.(JX390)...HEAT
SINK,
V.OUT
CN5O1A.1-540-057—
12
*3-703-244-00
(JX390:US)...BUSHING
(2104),
CORD
ne
Oe
PeylpRht
*3~-703-571-12
(JX390:E)....BUSHING
(4516),
CORD
C
0
TES
ESSE
ES
13
*4-917-044—11
(3X390)...BRACKET
(PT)
FL70)
$-519-512-11
14
%3-346-265-11
HOLDER,
PC
BOARD
PJl
=
1-565-352-21
15 X-4904-496-1 FOOT ASSY
16
4-917-063-01
BUTTON
(T)
abs
epereecemen
17 *4-917-061-01 SHAFT, TUN PTSOIA.1-449-527~
18 4-917-064-11 BUTTON (10 KEY) (6—0)
19
4+917~064-01
BUTTON
(10
KEY)
(1-5)
isl
RI
esocoaenat
20
*4~924-989-01
HOLDER
(FL
TUBE)
.
«MOUNTED PCB, CONTROL
(JX295:E)....MOUNTED PCB, CONTROL
(JX390:£)....MOUNTED PCB. CONTROL
(JX390:US)...MOUNTED PCB. CONTROL
(JX295)...PC BOARD, CONNECTOR
JX390)...PC BOARD, POWER
(
(JX295:
(JX295:
( JX390:
( JX390:
(
JX3 90:
(JX390:
(JX390:
(JX390:
(JX390:
US Canadian )..-MOUNTED PCB TUNER
E
ran MOUNTED PCB TUNER
US). eeeeeeee-MOUNTED PCB TUNER
2 ee “.+eMOUNTED PCB TUNER
E)...AC PLUG ADAPTOR
E)....OUTLET, AC (NONPOLAR)
US)...OUTLET, AC (POLAR)
E)....CORD, POWER
US)...CORD, POWER
INDICATOR TUBE, FLUORESCENT
(JX390)...JACK, PIN 2P
(JX390:
(JX3 90:
E)....TRANSFORMER, POWER
US)... TRANSFORMER, POWER
(JX390)..SWITCH, PUSH (AC POWER)(1 KEY)
(JX390:
E)....SWITCH, VOLTAGE CHANGE

ST-JX295/JX390
SECTION 5
ELECTRICAL PARTS LIST
NOTE:
e Due to standardization, replacements in the parts CAPACITORS:
list may be different from the parts specified in MF: wF, PF: uwuF.
the diagrams or the components used on the set. RESISTORS
@ Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
e (If there are two or more same circuits in a set
such as a stereophonic machine, only typical
circuit parts may be indicated and capacitors and
@ All resistors are in ohms.
@ F: nonflammable
COILS
@ MMH: mH, UH: wH
SEMICONDUCTORS
In each case, U: uw, for example:
UA...: wA..., UPA...: uPA...,
The components identified by
mark or dotted line with mark
A are Critical for safety.
eplace only with part number
specified.
Les composants identifiés par une
marque sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
resistors in other same circuits may be omitted.
UPC...: uPC, UPD...: uPD...
Ref.No. Part No. Description Ref.No. Part No.
901 ¥*A-4333-249-A (JX295:US,Canadian) C49: 1-162-524-11
..«MOUNTED PCB, CONTROL C51 1-124-477-11
*A-4333-250-A (JX295:E)....MOUNTED PCB, CONTROL 52 1-124-902-11
*A-4333-480-A (JX390:£)....MOUNTED PCB, CONTROL C61 1-163-063-00
*A~4333-481-A (JX390:US)...MOUNTED PCB, CONTROL
C62. 1-163~063-00
902 *1-630-299-11 (JX295)...PC BOARD, CONNECTOR C63. ~—«- 1-163 -063-00
903. *1-630-297-11 (JX390)...PC BOARD, POWER C64 ~—s-: 1-163 -063--00
904. *A-4303-176-A (J3X295:US Canadian )...-MOUNTED PCB TUNER
#AW4303-177-A (OX295:E Joseoeresses MOUNTED PCB TUNER Wei cael on
*A-4303-174-A (JX390:US)e ee cececee MOUNTED PCB TUNER C23 1163-059 00
*A-4303-175-A (JX390:E)..eeeeee++ MOUNTED PCB TUNER Tape oes
911 A.1-526-565-12 (JX390:£)...AC PLUG ADAPTOR C84 ~—s-: 1-163 -059-00
C85 —- 1~163-059-00
Cl 1=162-294-31 CERAMIC CHIP 0.001MF 20% 25V C860 s:« 1=124-477-11
C2 1-124-477-11 CAP, ELECT 47MF 20% ~=+i16V
3 1-163-059-00 CERAMIC MELF 0.01MF 20% ~=+16V C87. —s-:«1-163-059--00
C88 1-163-059-00
C4 1-162-294-31 CERAMIC CHIP 0.001MF 20% 25V C101 1-124-925~11
C5 1-163-059-00 CERAMIC MELF 0.01MF 20% 16V
C6 1-163-059-00 CERAMIC MELF 0.01MF 20% 16V C102: 1-124~463-00
C105: 1-124~477-11
c9 1-163-059-00 CERAMIC MELF 0.O1MF 20% 16V C103. -—- 1-163--059-00
C21 1-161-021-11 CAP, CERAMIC 0.047MF 10% 25V
(22 1-163-059-00 CERAMIC MELF 0.01MF 20% ~~ 16V C104 1-163-059-00
C501 A.1-161-744-00
23 1-124-477-11 CAP, ELECT 47MF 20% + +«16V C502. -—«1-101-004-00
(24 1=123-382-00 CAP, ELECT 3.3MF 20% 50V
C25 = 1=163-059-00 CERAMIC MELF 0.01MF 20% 16V C503 ~=—« 1-101 -004-00
C504 1-124-910-11
C26 1-162-527-11 CERAMIC CHIP 0.0068MF 20% 12V C506 1-101-005~00
C27. = 1=-162~516~11 CERAMIC CHIP 100PF 10% 50V
(28 «©1-124-499-11 CAP, ELECT 1.0MF 20% 50 C507. —« 1=123-356-00
C508 1-123-356-00
C30 1-124-499-11 CAP, ELECT 1.0MF 20% 50V C509 1-101-005-00
31 1+124-902-00 CAP, ELECT 0.47MF 20% 50V
32 1-124~463-00 CAP, ELECT 0.1MF 20% 50V C510 1-124-925-11
C511 ~—-1-101-005-00
33 1-130-481-91 (JX390/JX295:E)...CAP ,PE TEREPHTHALATE C512: 1-124~910-11
OO068MF 5% 50V
(33 1-130~482-00 (JX390:US/JX295:US Canadian)... C513. 1-124~911-11
CAP, PE TEREPHTHALATE 0.0082MF 5% SOV C514: 1-126-105-11
C601 1-123-332-00
(34 = 1=123-382-00 CAP, ELECT 3.3MF 20% 50V
C603. ~=—« 1-101-004-00
C35 1-130-481-91 (JX390/JX295:E)...CAP .PE TEREPHTHALATE C604 1-101-004-00
OOO68MF 5% 50V C605 1-101-004-00
C35 1-130-482-00 (JX390:US/JX295:US,Canadian)...
CAP, PE TEREPHTHALATE 0.0082MF 5% 50V C606 1-101-004-00
C607 1-136-173-00
(36 4 «=—- 1=123-382-00 CAP, ELECT 3.3MF 20% 50V C608 = 1-124-122~11
(37. =: 1=123=875-11 CAP, ELECT 10MF 20% 50V
(38 1-123-875-11 (JX390)...CAP,ELECT 10MF 20% 50V C609 1-101-004-00
C701. =-1-126-157-11
C39 =1-163-059-00 CERAMIC MELF 0.01MF 20% +~=«dz16V C702»: 1-161-379-00
C40 =—s-: 1-12 4~-463-00 CAP, ELECT 0.1MF 20% 50V
C4) 1-124-927-11 CAP, ELECT 4.7MF 20% 50V C703. « 1-125-486~11
C704 1-126-094-11
C42 1-163-059-00 CERAMIC MELF 0.01MF 20% 16V C705 1-161-379-00
C43 1-126-176-11 CAP, ELECT 220MF 20% 10V
C44. = 1=-163-059-00 CERAMIC MELF 0.01MF 20% 16V
C45 1-123-382-00 CAP, ELECT 3.3MF 20% 50V
C46 =: 1-162-524~11 CERAMIC CHIP 0.0022MF 20% 25V
C48 =: 1-123-382-00 CAP, ELECT 3.3MF 20% 50V
Description
CERAMIC CHIP 0.0022MF 20% 25V
CAP, ELECT 47MF 20% 16V
(JX390)...CAP,ELECT 0.47MF 20% 5S0V
CERAMIC MELF 0.022MF 25V
CERAMIC MELF 0.022MF 25V
CERAMIC MELF 0.022MF 25V
CERAMIC MELF 0.022MF 25V
CAP, CERAMIC 27PF 5% 50V
CAP, CERAMIC 27PF 5% 50V
CERAMIC MELF 0.01MF 20% 16V
CERAMIC MELF 0.01MF 20% 16V
CERAMIC MELF O.O1MF 20% 16V
CAP, ELECT 47MF 20% 16V
CERAMIC MELF 0.O1MF 20% 16V
CERAMIC MELF 0O.01MF 20% 16V
CAP, ELECT 2.2MF 20% 50V
CAP, ELECT O.IMF - 20% 50V
CAP, ELECT 47MF 20% 16V
CERAMIC MELF O.O1MF 20% 16V
CERAMIC MELF 0.01MF 20% 16V
CERAMIC 0.01MF 400
CERAMIC 0.01MF 50V
CERAMIC 0.01MF 50V
ELECT 47MF 20% 50V
CERAMIC 0.022MF 50V
ELECT 1 0OMF 20% 25V
ELECT 1 OMF 20% 25V
CERAMIC 0.022MF 50V
ELECT 2 .oMF 20% 50V
CERAMIC 0.022MF 50V
ELECT 47MF 20% 50V
ELECT 220MF 20% 50V
ELECT 1 O00MF 20% 35V
(JX295).. ELECT 47MF 20%
(JX295)...CERAMIC O.OIMF 20%
(JX295)...CERAMIC 0.01MF.20%
{JX295)...CERAMIC O.01MF 20%
(JX295)...CERAMIC O.O1MF 20%
(JX295)...FILM O.47MF 5%
(JX295)...ELECT 1OOMF 20%
(JX295)...CERAMIC O.OIMF 20%
ELECT 1OMF 20% 16V
CERAMIC 0.01MF 30% 16V
CAP ,DOUBLELAYEKS 0.22F 5.5
ELECT 4.7MF 20% 25V
CERAMIC 0.01MF 30% 16V
Vv
16V
50V
50V
50V
50V
50V
50V
50V
V

Ref.No.
C706
C707
C708
C709
C710
C711
C712
C713
C714
CCl
CC2
C3
CF]
CF2
CF21
CF701
CFT21
CN]
CN2
CNB
Part No.
1-162-286-3 1
\=162~2 86-31
1-162-2 86-31
1-1 62-2 86-31
1-162-2 86-31
1-162-2 86-31
1-1 62-2 86-31
1-1 62-2 86-31
1-13 6-1 73-00
1-249-366-1 1
1-249-366-11
1-249-366-11
1~567~3 89-11
1-567~3 89-1 1
1-577-075=11
1-577-359-21
1-404~853-11
*] -568-2 84-1 |
1~564-980-11
1~564-980-1 |
CN501 A, 1-540-03 8-11
CN501A.1-540-057-11
CN601
CN602
CN603
CN604
CN701
CN702
CNJ1
CNJ2
CNJ3
CNJ4
CPI
CPI
CP701
D21
022
023
024
0501
0502
D503
0504
D505
0506 -
0507
0601
0602
D603
0701
D702
D703
D707
D708
0709
0710
0711
0712
1-568-2 78-11
1-568-2 83-1 1
1~566-856-1 |
1-566~858-1 |
1-568-2 82-11
*] ~568~-2 84-11
*| -568-2 76-11
*| -568-2 73-11
*1 568-2 7511
|-568-269-1 1
A.1-551-1 88-XX
A.1-557-577-11
J-233-148~11
8-71 9-000-2 6
8-71 9-000-2 6
8-71 9-000-26
8-71 9-~-000-26
8-71 9-200-77
8-71 9~200-77
8-71 9-000~2 6
8-71 9-000-26
8-71 9-1 09-89
8-71 9-904-93
8-71 9-000-26
8-71 9-000-26
8-71 9-000-51
8-71 9-109-89
8-71 9-000-26
8-71 9-000~2 6
8~71 9-000~26
8-71 9-000~2 6
8-71 9-000-26
8-71 9-000-26
8-71 9-000-26
8-71 9~000-26
8-71 9-000~26
(JX390:E)...OUTLET, AC (NONPOLAR)
(JX390:US)...OUTLET, AC (POLAR)
CONNECTOR 3P
CONNECTOR 8P
CONNECTOR 5P
(JX295)...SOCKET ,
(JX295)... SOCKET ,
(JX295)...SOCKET ,
(JX295)...SOCKET , CONNECTOR 11P
SOCKET , CONNECTOR 7P
SOCKET , CONNECTOR 9P
10P
7P
9P
CONNECTOR 3P
SOCKET , CONNECTOR
SOCKET , CONNECTOR
SOCKET , CONNECTOR
(JX295)...SOCKET ,
(JX390:E)...CORD,
(JX390).....CORD,
POWER
POWER
COMPOSITION CIRCUIT BLOCK
(JX390)...DIODE US1060M
(JX390)...DIODE USI060M
(JX390)...DIODE USI060M
(JX390).. DIODE USI1O60M
DIODE 10E2N
DIODE 10E2N
DIODE US! 060M
DIODE US1060M
DIODE RDS .6ES~B2
DIODE EQA02-308
DIODE US1060M
(JX295)....DIODE US1060M
(JX295)....DIODE UZL-6L2
(JX295)... DIODE RDS .6ES-B2
DIODE US1060M
DIODE US1060M
DIODE US1060M
(JX390/JX295:E).. DIODE US1060M
DIODE US1060M
DIODE US1060M
DIODE US1060M
DIODE US1O60M
DIODE US1060M
Description Ref.No.
CERAMIC 220PF 10% -50V 0713
CERAMIC 220PF 10% -50V D714
CERAMIC 220PF 10% 50V 0715
CERAMIC 220PF 10% 50V 0716
CERAMIC 220PF 10% -50V D717
CERAMIC 220PF 10% 50V 0718
CERAMIC 220PF 10% -50V FE]
CERAMIC 220PF 10% 80V FE61
FILM 0.47MF 5% «5 0V
FL701
CARBON MELF O 5% 1/5W so
CARBON MELF O 5% 1/5W aa
CARBON MELF 0 5% 1/5W a
FILTER, CERAMIC 16701
FILTER, CERAMIC i
OSCILLATOR, CERAMIC a
VIBRATOR, CERAMIC
L601
TRANSFORMER ,IF (CERAMIC FILTER) L701
SOCKET , CONNECTOR 9P Ae
(JX390)...PIN, CONNECTOR 4P
(JX390)...PIN, CONNECTOR 4P afi
Part No.
8~71 9-000-26
8-71 9-000-26
8~71 9-000-26
8-71 9-000-26
8~71 9-000-26
8-71 9-000-26
1-463 -862-21
1-236~-461-11
1-519-512-11
8-759-821-45
8-759-820-91
8-759-82 0-09
8-759-23 4-26
1=410-521-11
1-410-171-11
1-410-521-11
1-410-521-11
1-23 5-1 64-00
1-235-1 64-00
1-565-352-21
PT501A.1-449-526-11
PT501A.1-449-527-11
Q1 8-72 9-2 66-93
Q2 8-72 9-2 66-93
Q21 8-729-119~78
Q22 8-72 9-1 19-78
Q26 8-72 9-900-80
Q27 8-72 9-1 19-78
Q28 8~729-119-78
Q81 8-72 9-806-10
Q82 8-72 9-900-80
Q83 8-72 9=2 02-67
Q84 8-72 9-201~-84
Q601 = 8-729-11.5-77
Q602 8+-729-115-77
RI A.1-249-401~11
R2 1-249-32 9-11
R3 1-2 49-32 9-11
R4 1-249-329—11
R5 1-249-329-11
R6 1-249-350—1 1
R7 1-249-329-11
R8 1-249-332-11
R9—-—«1-249-352-11
R21 A.1-249-404-00
R22 1-249-42 8-1 |
R22 1-249-433-00
R23 1-249-335-11
R24 1-249-353-11
R25 1-249-42 8-11
R27 1-249-350-11
R29 1-249-347-11]
R31 1=249-331-1]
R32 1-249-347-11]
R33 1-249-3 47-11]
Note:
The components identi-
fied by mark
ted line with mark
are critical for safety.
Replace only with part |
number specified.
ST-JX295/JX390
Description
DIODE US1060M
DIODE US1060M
DIODE US1060M
DIODE US1060M
DIODE USI060M
DIODE US1060M
FRONT END, FM
ENCAPSULATED COMPONENT
INDICATOR TUBE, FLUORESCENT
IC LAI851N
TCL C72'6
IC LA5667
IC TMP47C670N—1282
MICRO INDUCTOR
MICRO INDUCTOR
(JX295)... INDUCTOR
INDUCTOR 100UH
100UH
FILTER, LOW PASS
FILTER, LOW PASS
(JX390)...dACK, PIN 2P
(JX390:£)....TRANSFORMER, POWER
(JX390:US)...TRANSFORMER, POWER
TRANSISTOR 2S(2669
‘TRANSISTOR 2S(2669
TRANSISTOR 2S(2785
TRANSISTOR 2SC2785
TRANSISTOR DTCI14ES
(JX390)...TRANSISTOR 2SC€2785
(JX390)...TRANSISTOR 2SC2785
TRANSISTOR 2SA1348
TRANSISTOR DTCI14ES
TRANSISTOR 2SK246GR3
TRANSISTOR 2S03112-13
(JX295)...TRANSISTOR BAIL 4M
(JX295)...TRANSISTOR BAIL4M
RES, CARBON (SMALL) 47 5% 1/4w F
CARBON MELF 330 5% 1/8W
CARBON MELF 330 5% 1/8W
CARBON MELF 330 5% 1 /8W
CARBON MELF 330 5% 1/8W
CARBON MELF 18K 5% 1 /8W
CARBON MELF 330 5% 1/8W
CARBON MELF 560 5% 1 /8W
CARBON MELF 27K 5% 1 /8W
RES, CARBON (SMALL) 8&2 5% 1/4W F
(JX390:US/JX295:US ,Canadian)
.«RES, CARBON (SMALL) 8.2K 5% 1/4W
(JX390/J3X295:E)
..RES, CARBON (SMALL) 22K 5% 1/4W
CARBON MELF 1K 5% 1/8
CARBON MELF 33K 5% 1 /8W
RES, CARBON (SMALL) 8.2K 5% 1/4W
CARBON MELF 18K 5% 1/8
CARBON MELF 10K 5% 1/8W
CARBON MELF 470 5% 1/8W
CARBON MELF 10K 5% 1/8
CARBON MELF 10K 5% 1/8
Note:
Les composants identifiés par
une marque A\ sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro spéci-
fié.
or dot-

ST-JX295/JX390
Ref.No. Part No. Description Ref.No. Part No. Description
R34 1-249-425-11 (JX390)...RES,CARBON(SMALL) 4.7K R690 A.1-212-942-00 (JX295)...FUSIBLE 2.2 5% 1/2W
R34 1-249~-437—~11 (JX295)...RES,CARBON(SMALL) 47K 5% 1/4W R701 1-249-~405-11 CARBON 100 3=5% 1/4W
R702 1 -249~441—11 CARBON 1OOK 5% 1 /4W
R35 1-249-355-11 CARBON MELF 47K 5% 1/8W
R37 1-249-359-11 CARBON MELF 100K 5% 1/8W R703. 1~249~441-11 CARBON 100K 5% 1/4W
R38 1-249-363-~11 CARBON MELF 220K 5% 1/8W R704 1-249-441~11 CARBON 100K 5% 1/4W
R709 1-249-417-11 CARBON 1K 5% 1/4W
R39 1-249-339~-11 CARBON MELF 2.2K 5% 1/8W
R40 1~249-338-11 CARBON MELF 1.8K 5% 1 /8W R710 1-249-411-—11 CARBON 330 5% 1/4W
R4}
1-249-344-11
CARBON
MELF
5.6K
5%
1/8W
R711
1-249-411~11
CARBON
330
5%
1/4W
R712 1~249-42 9-11
R42 1-249-359-1] CARBON MELF 1OOK 5% 1/8W CARBON ue oF 1/4M
R43 1-249-363-11 CARBON MELF 220K 5% 1/8W R713 ]=249~429—11 CARBON 10K 5% 1/4W
R44 1-249+-339-11 CARBON MELF 2.2K 5% 1/8W R714 = 1-2 49=429-11 CARBON 1OK = 5% 1/4W
R715 1=249~429~11 CARBON 10K 5% 1/4W
R45 1~249-338-11 CARBON MELF 1.8K 5% -1/8W
R46 1=249-344-11 CARBON MELF 5.6K 5% 1 /8W R716 1~249-429-11 CARBON 10K 5% 1 /4W
R47 A.1-249-409-11 RES, CARBON (SMALL) 220 5% 1/4W F R717 | 249-42 9~11 CARBON 10K 5% | /4W
R718 1-249-429-11 CARBON 10K = «5% 1/4W
R48 1-249-359-11 (JX390)...CARBON MELF 100K 5% 1/8W .
R49 1+249-359-11 (JX390)...CARBON MELF 100K 5% 1/8W R719 1-2 49-429—11 CARBON 10K 5% 1/4W
R61 1-249-359-11 CARBON MELF 100K 5% 1 /8W R720 1-249-441-11 CARBON TOOK 5% 1/4W
R721 }-249~441-11 CARBON 100K 5% 1/4W
R62 1+249~355-11 CARBON MELF 47K 5% 1/8W
R63 ]-249~315-11 CARBON MELF 22 5% 1/8W RV21 1=238-013=11 RES, ADJ, CARBON 2.2K
R81 ]~249~335-11 CARBON MELF JK 5% 1/8W RV22 1-238-017-11 RES, ADJ, CARBON 22K
RV24 1 1#238~017-11 RES, ADJ, CARBON 22K
R82 1-249-335-1] CARBON MELF 1K 5% 1/8W
R83 ]-249-335~-11 CARBON MELF 1K 5% 1/8W S] A\.1~554-920—11 (JX390)..SWITCH, PUSH (AC POWER) (1 KEY)
R84 1-249~-335~11 CARBON MELF 1K 5% 1 /8W $701 ]~554-~303-21 SWITCH, KEY BOARD (1)
$702 1~554~303-21 SWITCH, KEY BOARD (2)
R85 1~249-347—11 CARBON MELF 10K 5% 1/8W
R86 1=249-335~11 CARBON MELF 1K 5% 1/8W $703 1~554-303-21 SWITCH, KEY BOARD (3)
R87 1+249-347~11 CARBON MELF 10K 5% 1/8W $704 1-554-303-21 SWITCH, KEY BOARD (4)
S705 1 -554-303-21 SWITCH, KEY BOARD (5)
R88 1-249-343-11 CARBON MELF 4.7K 5% 1/8W
R89 1-249~335—11 CARBON MELF 1K 5% 1/8W S706 1-554-303-21 SWITCH, KEY BOARD (6)
R90 1-249-347~1]1 CARBON MELF 10K 5% 1/8W $707 1~554-303-21 SWITCH, KEY BOARD (7)
.
$708
1-554-303-21
SWITCH,
KEY
BOARD
(8)
R91 ]-249-335~11 CARBON MELF IK 5% 1/8W
R92. A.1-249-401~11 RES, CARBON (SMALL) 47 5% 1/4W F S709 1-554~303-21 SWITCH, KEY BOARD (9)
R101 1][phone] CARBON MELF 3.3K 5% 1/8W $710 ][phone] SWITCH, KEY BOARD. (0)
$71] ]-554-303-21 SWITCH, KEY BOARD (AUTO TUNING)
R102 ]-249-332—-11 CARBON MELF 560 5% 1/8W ‘
R103 J <2 49-335-11 CARBON MELF 1K 5% 1/8W $712 1~554~303-21 SWITCH, KEY BOARD (MEMORY SCAN)
R104 1-249-328-11 CARBON MELF 270 5% 1/8W $713 }-§54~303-21 SWITCH, KEY BOARD (MEMORY)
$714 1-554~-303-21 SWITCH, KEY BOARD (SHIFT)
R105 1-2 49--343~11 CARBON MELF 4.7K 5% 1/8W
R106 1-249-339—11 CARBON MELF 2.2K 5% 1/8W S715 1-554~303-21 SWITCH, KEY BOARD (BAND FM/AM)
R107) = 1=249-343~1]1 CARBON MELF 4.7K 5% 1 /8W S716 1-554-088-00 SWITCH, KEY BOARD (TUNING +)
S717 1-554-088-00 SWITCH, KEY BOARD (TUNING -)
R108 1-249-323-11 CARBON MELF 100 5% 1 /8W
R109 = 1-249-343~11 CARBON MELF 4.7K 5% 1 /8W T2] ]-404-807-11 TRANSFORMER, DISCRIMINATOR
R110 A.1-249~405-11 RES, CARBON (SMALL) 100 5% 1/4W F
TB501 *1~535-141-00 (JX390:US)..BASE POST 22MM(10MM PITCH)4P
R501 1-202-725-00 SOLID 3.3M 10% 1/2W TB501 *1-535-142-21 (JX390:E)...BASE POST 22MM(10MM PITCH)5P
R502 1=249-43 7-11 CARBON 47K 5% 1/4W
R503 A.1-247~752-11 CARBON 1K 5% 1/aWw F TMI ]-536-708-00 TERMINAL BOARD, PUSH 4P
R504 -1-249-393-11 CARBON 10 5% = «1 /4W TPT —*1-560-060-00 PIN, CONNECTOR 2P
1 -249-441~-1] ARBON TOOK 5% 1/4W
ts oie yo 5 hacGaRach 10 a 1/4W VSI A.1-570-046-21 (JX390:E)...SWITCH, VOLTAGE CHANGE
R602 A.1-247-741-11 (JX295)...CARBON 150 5% 1/2W XT81—-1-577-126-11 VIBRATOR, CRYSTAL
R603 1-249~429-11 (JX295)...CARBON 10K 5% 1/4W
R604 = 1=-249-429~11 (JX295)...CARBON 10K 5% 1/4W
R605 1+249-435~11 (JX295)...CARBON 33K 5% 1/4W
R606 }-249-438-11 (JX295)... CARBON 56K 5% 1/4W
R607 1+249-441=11 (JX295)...CARBON 100K 5% 1/4W
Note:
Les composants identifiés par
sont critiques
Note:
The components identi-
fied by mark or dot-
ted line with mark
are critical for safety.
Replace only with part
number specified.
une marque
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro spéci-
fié.
a ae

ST-JX295/JX390
ACCESSORY & PACKING MATERIAL
1-501-374-11 (3X390)...ANTENNA, LOOP
1-558-232-11 (JX390)...CORD (WITH CONNECTOR) (SIRCS)4P
1-558-543-11 (JX390)...CORD, CONNECTION
3-750-169-11 (JX390:£)....MANUAL, INSTRUCT ION
3-750-169-21 (JX390:US)...MANUAL, INSTRUCT ION
*3~704-339-01 (JX390)...SHEET (STANDARD), PROTECT ION
*4917-057-01 (JX390)...CUSHION
*4-917-066-01 (JX390)... INDIVIDUAL CARTON
—25—

ST-JX295/JX390
English
: 89C0537-1
Sony
Corporation
Printed
in
Japan
9-953-698-11
Audio
Group
©
1989.
3
—2 6— Published by A/V Engineering Service Dept.

SONY. US Model
SERVICE MANUAL sree
Canadian Model
ST-JX295 |
SUPPLEMENT-1
File this supplement with the Service Manual.
Subject: Australian model has been added.
ST-JX390 Australian model has been added for E model. |
This supplement only contains the difference between the models.
Therefore, refer to the service manual for the other information.
ST-JX390 E model ST-JX390 Australian model
Page No. Part No. Description Part No. Description
12 *3-703-571-12 | BUSHING (4516), CORD *3-703-244-00 BUSHING (2104), CORD
21 911 A\1-526-565-12 AC PLUG ADAPTOR A\1-506-401-00 ADAPTOR, CONVERSION
CP1 A\1-551-188-XX CORD, POWER | A\1-555-795-00 CORD, POWER,EURO PLUG
* Items marked “*” are not stocked since they are seldom
required for routine service. Some delay should be
anticipated when ordering these items.
English
. 89K0511-1
Sony Corporation Printed in Japan
9-953-698-81
Audio
Group
.
©
1989.11
Published
by
Customer.
Relations
and
Service
Group

ST-JX299/JX390
SONY.
|
US
Model
SERVICE
MANUAL
Betitipsee
Canadian Model
SUPPLEMENT-2
Subject:
TUNER BOARD MODIFICATION
The tuner board has been modified.
File this supplement with the service manual.
e DIFFERENCE BETWEEN NEW TYPE AND FORMER TYPE
FORMER NEW
[TUNER BOARD] — Component Side — [TUNER BOARD] — Component Side —
FET
FE1
7 pins
10 pins
Note: The mounted tuner board can be replaced with the new type as a whole block.

Note on Printed Wiring Board:
® o-——— ; parts extracted from the component side.
® [be : indicates side identified with part number.
[PRINTED WIRING BOARD]
[Note on Inserting the Cord to the Connector on
Tuner Board]
e Insert the cord to the connector fitting Pin @ of the
cord in accordance with the white mark on the board at
the connector as shown in the figure.
ST-JX390
i
A B c D F E
> ona 6 H 6 *
cord
DG
Y
rn
.
i
17,
Ss
pin @ A dn Allele te 1 ST-JX295
x x
(TUNER
BOARD)
walalale
alae
wala
a}
wala
connector
white mark
Note on Schematic Diagram:
e
All
capacitors
are
in
»F
unless
otherwise
noted.
pF:
wyF
rin
50
WV
or
less
are
not
indicated
except
for
electrolytics
ANTENNA
and tantalums.
e
All
resistors
are
in
Q
and
%
W
or
less
unless
otherwise
AM
|—
specified.
®
A
:
internal
component.
e
—wd
:
nonflammable
resistor.
ae
Note:
Note:
The
components
identified
|
Les
composants
identifiés
par
in
by
mark
A\
or
dotted
line
|
une
marque
A.
sont
critiques
750
with
mark
A\
are
critical
for
|
pour
la
sécurité.
safety.
Ne
les
remplacer
que
par
une
Replace
only
with
part
|
piéce
portant
le
numéro
spéci-
number
specified.
fié.
e
(2yge.
3002
e
[ER
:
B-Line.
|
e
[C__]
:
adjustment
for
repair.
®
Valtages
and
waveforms
are
de
with
respect
to ground
under
no-signal
(detuned)
conditions.
no
mark:
FM
e
Voltages
are
taken
with
a
VOM
(10
MQ/V).
FES4
ae
rei
Voltage variations may be noted due to normal production
4 rg TO = r
| 3on4 5 6 o7 | 3 8 1
tolerances.
'
1613
JA
ee
ar
ot
I
AL?
4e?
|
a
i
2,!
;
:
|
20f!
ho-F
169
Zi
o8
|
1S
Log
|
4
$
@
Wavefroms
are
taken
with
a
oscilloscope.
F
o®
amy}
f
1
j2
st
4
ne
:
1
“1
|
‘
[
oO
t
|
Voltage
variations
may
be
noted
due
to
normal
production
is
epee
aise
ee
ee
ne
kane
me
ee’
oa
tolerances.
e Circled numbers refer to wavefroms.
® Signal path.
> : FM

[SCHEMATIC DIAGRAM]
1
2
3
4
5 6
7
8
9
10
11
12
13
14
15
[(TUNER
BOARD)
ae
|
|
[ouTPUT]
4
2502669 ST-JX390 [OUTPUT] '
FE1
FM
FRONT-END
FM
IF
AMP
ONT
:
rR)
a2
x,
|
6
|
!
iw
t
'
$
ee ees
eM
it
RV26
a
ANTENNA]
“—|©
5
s
heey
ft
Lam
:
oe
:
RY22 a7 bed
* Sov a
hows 1
|
16
aes
1.8) feyak LA1851N Q21, 22 oe
AM
RF,
MIX,
OSC,
IF
BUFFER,
DET
i
530KHz: (4.3) FM IF BUFFER, DET, MPXx Boy i ! '
17
40KHz
:
(7.8)
bo
We Og
87.5MHz:
2
; H
H
408MHz:
7.6
ah iy
(cs
4 2 oy PMN mene 4)
|
at
ee
eae i
FE61
AM
FRONT-END
i
ay
a
oy rat oe cer a icles a
GO)
16]
7
a
ae
i
:
marae
eit
3
ca
3
:
UTING:
0.6
|
yt
ae
(1)
=
ROE
MUTE
:
6.3
Jj
"
ies
i
ee
8
OTHERS
:
0
CS
:
oe
ie
tt
|
FEGI
HY
WW)
(14)
G5)
(10)
38}
|
CBI
26
'
cari,
ase!
1!
a
RV 1 : 16 A y 022 23 D24 oN ie 1! a
STEREO 1 D22-23 ih fae
L_
eh
tet
Te]
|:
Bae
a
ia
=
avz1
asa
ago
Gy
gy
hg
i
re
1
eG
3
F
2.
2k
10k
10k
MS
!
Flee
pot
a
ait
some
gn
SEER
aes
re
!
.
St
17
4OKHz
:
(2:5)
a8
Q82
D21
US1
Irie
cia
§
oe
oo
oT
oeMie.
28
PRESCALER
PLL
2SA1348
2SC3402
ST-JX390
#
tee
ie
Q27,
28
i
i
!
FM
B+
SWITCHING
—
begs
b¢SC8K02
|
MUTING
OS:
«
2$62785
1
La
cc1 L a | MUTING MUTING rt
-
°
ST-JX295
L---———------H
Se
38
ST-JX390
7
:
Hi
R110 '
ae
630KHz
:
-
|
Q83
ass
ae
SM
eet
Dana
Dee
Oe
On
Un
Og
gn
Cc
Ml
MMI
IID
ARGS
GAM
(2
SRM
|
Cra
ere
eee
ern
ner
en
err
ones
ed
ee
Pre
se
eNO
Sele
ete
ea
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