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Sony ST-JX311 User manual

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SERVICE
MANUAL
ST-JX311:
This
set
is
the
tuner
section
in
SEN-311.
ST-IX311/JX4
11
|
US
Model
Canadian
Model
E
Model
Australian
Model
Photo:
ST-JX411
SPECIFICATIONS
FM
tuner
section
Tuning
range
Antenna
terminals
87.5
-—
108
MHz
75
ohms
unbalanced
300
ohms
balanced
Intermediate
frequency
10.7
MHz
Sensitivity
(at
50
dB
quieting
)
22.1
dBf,
7
nV
(mono),
42.1
dBf,
70
pV
(stereo)
Usable
sensitivity
19.5
dBf,
5
pV
(IHF)
Signal-to-noise
ratio
(at
75
kHz
deviation)
80
dB
(mono),
75
dB
(stereo)
Harmonic
distortion
0.3%
(mono),
0.5%
(stereo)
at
1
kHz
Separation
40
dB
at
1
kHz
Frequency
response
30Hz-
15
kHz
‘33
dB
Selectivity
55
dB
at
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
wV
(30
dBf)
Output
775
mV,
4.7
kohms
(at
75
kHz
deviation)
AM
tuner
section
Tuning
range
US,
Canadian
model:
530—1,710kHz
(10
kHz)
531—1,710kHz
(9kHz)
E,
Australian
model:
531
—1,602kHz
Antenna
AM
loop
antenna,
External
antenna
terminal
Intermediate
frequency
450
kHz
Usable
sensitivity
AM
loop
antenna:
500
pV/m
(999
kHz
or
1,000
kHz)
Signal-to-noise
ratio
54dB
Harmonic
distortion
0.5%
Selectivity
35
dB
(9
KHz)
38
dB
(10
KHz)
General
Power
requirements
—_-
US,
Canadian
model:
120
V
AC,
60Hz
_
E,
Australian
model:
240V
AC,
50Hz
Power
consumption
|
8W
(ST-JX411)
AC
outlet
(U.S.A.
model
only)
1
unswitched,
120W/1
A
max.
Dimensions
Approx.
430
x
80
x
295
mm
(w/h/d)
(17
x
31/4
x
115/g
inches)
Weight
ST-JX311:
Approx.
2.1kg
(4
Ib
1102)
ST-JX411:
Approx.
2.6kg
(5
Ib
1202)
Accessories
supplied
ST-JX311:
Flat
cord
with
11-5-5-pin
connectors
(1),
connected
to
TC-W311.
Flat
cord
with
9-9-pin
connectors
(1)
Remote
commander
RM-S102
(1)
Sony
batteries
SUM
3
(NS)
(2)
Remote
control
cord
(1)
Audio
connecting
cord
(1)
AM
loop
antenna
(1)
FM
toop
antenna
(1)
ST-JX411:
Design
and
specifications
subject
to
change
without
notice.
FM
STEREO/FM-AM
TUNER
SONY.
ST-JX311/JX411
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
(SOO
microampers).
Leakage
current
can
be
measured
by
any
one
of
three
methods.
1.
A
commercial
leakage
tester,
such
as
the
Simpson
229
or
RCA
WT-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
0.75V,
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
0.15
pF
15k
voltmeter
(0.75
V)
=
Earth
Ground
Fig.
A.
Using
an
AC
voltmeter
to
check
AC
leakage.
SAFETY-RELATED
COMPONENT
WARNING!!
COMPONENTS
IDENTIFIED
BY
MARK
A
OR
DOTTED
LINE
WITH
MARK
A
ON
THE
SCHEMATIC
DIAGRAMS
AND
IN
THE
PARTS
LIST
ARE
CRITICAL
TO
SAFE
OPERATION.
REPLACE
THESE
COMPONENTS
WITH
SONY
PARTS
WHOSE
PART
NUMBERS
APPEAR
AS
SHOWN
IN
THIS
MANUAL
OR
IN
SUPPLEMENTS
PUB-
LISHED
BY
SONY.
TABLE
OF
CONTENTS
Section
Title
Page
Specifications
ee
a
l
Safety
Check-out
Cem
meer
eer
e
renee
sre
swerve
sresseove
2
SECTION
1.
GENERAL
1-1.
Location
of
Controls
---+--+++++ree
reese
3
1-2.
Connections
rs
4
SECTION
2.
ELECTRICAL
ADJUSTMENTS
:----
6
SECTION
3.
DIAGRAMS
3-1.
Printed
Wiring
Boards
----+---+--++++-++--
7
3-2.
Schemartic
Diagram
(Tuner
Section)
------
11
3-3.
Semiconductor
Lead
Layouts
------------>
13
3-4.
Waveforms
ee
cr
as
13
3-5.
Schematic
Diagram
(Control
and
Power
Section)
-----------
14
SECTION
4.
EXPLODED
VIEW
....------------
17
SECTION
5.
ELECTRICAL
PARTS
LIST
------
19
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.
ATTENTION
AU
COMPOSANT
AYANT
RAPPORT
A
LA
SECURITE!
LES
COMPOSANTS
IDENTIFIES
PAR
UNE
MARQUE
/\
SUR
LES
DIAGRAMMES
SCHEMATIQUES
ET
LA
LISTE
DES
PIECES
SONT
CRITIQUES
POUR
LA
SECURITE
DE
FONCTIONNEMENT.
NE
REMPLACER
CES
COM.
POSANTS
QUE
PAR
DES
PIECES
SONY
DONT
LES
NUMEROS
SONT
DONNES
DANS
CE
MANUEL
OU.
DANS
LES
SUPPLEMENTS
PUBLIES
PAR
SONY.
—)—
SECTION
1
GENERAL
1-1.
LOCATION
OF
CONTROLS
POWER
switch
(ST-JX411
only)
SHIFT
button
Display
window
MEMORY
SCAN
button
AUTO
TUNING
button
[6]
TUNING
control
BAND
FM/AM
selector
MEMORY
button
[9]
Numeric
buttons
This
section
is
extracted
from
instruction
manual.
1-2.
CONNECTION
°
Connect
the
AC
power
cord
last.
Make
sure
power
is
off.
°
Cord
plugs
and
jacks
are
color
coded.
Red
plugs
and
jacks
are
for
right
channel
(R)
and
white
ones
for
the
left
channel
(L).
«
The
cable
connectors
shouid
be
fully
inserted
into
the
jacks.
A
loose
connection
may
cause
hum
and
noise.
*
Keep
speaker
cords,
connecting
cords
and
power
cords
away
from
the
AM
loop
antenna
and
the
tuner’s
antenna
lead-in
to
avoid
possible
noise
pickup.
ST-JX311
Model
@
FM
wire
antenna
(supplied)
Speaker
system
Right
Left
For
better
FM
reception
Outdoor
FM
antenna
(75-ohm
coaxial
cable)
ST-JX311
For
better
AM
reception
Extend
a
6
to
15-meter
insulated
wire
out
of
doors
ig
also
necessary
to
connect
the
supplied
M
loop
antenna.
CAUTION
Do
not
connect
any
electical
home
appliances
such
as
an
iron,
fan,
TV
or
other
high
wattage
equipment
to
the
AC
OUTLET.
CAUTION
Do
not
put
anything
like
another
unit
to
obstruct
the
ventilation
holes
on
the
top
of
the
amplifier.
The
level
surface
installation
is
required
for
essential
air
ventilation
to
prevent
internal!
heat
built
up
in
the
amplifier.
©
Speaker
cords
You
can
connect
two
pairs
of
speaker
systems:
system
A
and
system
B.
They
can
be
selected
individually
or
simultaneously
with
the
selector
on
the
front
panel.
@
Flat
remote
control
cord
(supplied)
@
AC
OUTLET
Connect
the
blue
and
black
connectors
to
the
same
color
Use
this
to
power
an
audio
component
whose
power
connector
jacks
respectively
for
controlling
each
unit.
consumption
is
less
than
the
wattage
indicated
on
the
AC
OUTLET.
~~
This
outlet
is
controlled
by
the
power
switch
on
the
“
amplifier.
Push
in
until
it
clicks.
To
disconnect.
Adding
Other
Components
to
Your
System
Turntable
system
TA-AX3114
=
to
a
wall
outlet
Line
outputs
Audio
line
outputs
.
CD
player
Note
The
supplied
flat
cords
for
tape
deck
are
already
connected
to
the
TC-W311,
ST-JX411
Model
@
FM
wire
antenna
(supplied)
@
AM
loop
antenna
(supplied)
To
attach
to
a
wall
CONTROLS
OUT
ST-JX414
mS
|@|
t
t
Sy
=
wp
CONTROLS
to
a
wall
outlet
or
an
:
ar
‘
a
AC
outlet
of
For
better
FM
reception
udio
connecting
a
cord
(supplied)
the
ampiifier
Flat
remote
control
P
Extend
a
6
to
15-meter
err
Outdoor
FM
antenna
insulated
wire
out
of
doors.
Amolifier
(75-ohm
coaxial
cable)
CONTROLS
Oe
It
is
also
necessary
to
connect
the
supplied
AM
loop
antenna.
®
Antenna
Ground
To
prevent
hum,
connect
the
ground
wire
to
ANTENNA
ground
terminai
(,4-).
When
an
outdoor
antenna
is
installed,
be
sure
to
connect
the
ground
wire
for
lightning
protection.
@
AC
OUTLET
(U.S.A.
model
only)
Use
this
to
power
an
audio
component
whose
power
consumption
is
less
than
the
wattage
indicated
on
the
AC
OUTLET.
This
outlet
is
controlled
by
the
power
switch
on
the
amplifier.
©
Fiat
remote
control
cord
(supplied)
IN:
Connect
to
the
CONTROL
S
OUT
connector
of
the
Soy
amplifier
for
whole
audio
system
remote
control.
OUT:
Connect
to
the
CONTROL
S
IN
connector
of
other
Sony
equipment
with
the
4-pin
flat
remote
control
cord
for
whole
audio
system
remote
control.
CAUTION
Do
not
connect
any
electicai
home
appliances
such
as an
iron,
fan,
TV
or
other
high
wattage
equipment
to
the
AC
OUTLET.
Note
to
CATV
system
indstaller
This
reminder
is
provided
to
cail
the
CATV
system
installer's
attention
to
Article
820-22
of
the
NEC
that
provides
guidelines
for
proper
grounding
and,
in
par-
ticular,
specifies
that
the
cable
ground
shall
be
connected
to
the
grounding
system
of
the
building,
as
Close
to
the
point
of
cable
entry
as
practical.
Push
in
until
it
clicks.
To
disconnect.
ST-JX311/JX411
SECTION
2
ELECTRICAL
ADJUSTMENTS
FM
SECTION
e
FM
Discriminator
Alignment
(NULL
check)
¢
FM
Stereo
Separation
Adjustment
Setting
:
Setting
:
FM
RF
stereo
signal
generator
FM
RF
stereo
"
signal
generator
Carrier
frequency
:
98
MHz
Output
level:
60
dBy
FM
ANTENNA
3002
terminals
nie
ee
CNJ2
(5
or
7
pin)
VOM
)
(DC
range)
TPi
NULL
terminal
Carrier
frequency
:
98
MHz
Output
level
:
60
dBy
|
|
(Soi
meees
Procedure
:
Tune
the
set
to
98
MHz,
Procedure
:
1,
Tune
the
set
to
98
MHz,
FM
stereo
2,
Adjust
T21
for
0
V
reading
on
the
VOM.
signal
generator
MBAs
VV
Note:
FM
TUNING
LEVEL
adjustment
should
be
macle
after
output.
chanhel
connection
reading
(dB)
FM
discriminator
alignment,
e
FM
TUNING
LEVEL
Adjustment
Adjust
RV21
for
minimum
reading,
Setting
:
FM
RF
stereo
signal
generator
Adjust
RV21
for
minimum
reading,
set
L-CH
Stereo
separation
:
(A)
=
(B)
R-CH
Stereo
separation
:
(c)-
(D)
FY
ONT
ENS
S008
The
separations
of
both
channels
should
be
equal,
terminals
Carrier
frequency
:
98
MHz
Output
level
:
25
dBy
Procedure
:
1.
Tune
the
set
to
98
MHz,
2,
Adjust
RV24
so
that
the
TUNED
LED
goes
on,
AM
SECTION
—TUNER
BOARD
—
(Component
side)
e
AM
Tuned
Indication
Lighting
Level
Adjustment
1C81
ie
t
Setting
:
;
!
14
pegubunas
Put
the
lead-wire
ne
antenna
close
to
Dat
Woe
set
RV21
TP
REO)
as
Oe
|
car
1021
Pu
(emaems
er
tt
RV22
30%
amplitude
modulation
by
400
Hz
signal
Output
level:
94
dBy
Procedure
:
1,
Tune
the
set
to
1,050
kHz
(US,
CANADIAN),
999
kHz
(EK,
AUS).
2,
Adjust
RV22
so
that
the
TUNED
LED
goes
on.
ST-JX311/JX411
{
2
i>
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
ae
oe
48
es
eee
ee
|
eo
|
7
[|
[|
19
|
20
ee
ee
ee
ee ee
ee
SECTION
3
DIAGRAMS
3-1.
PRINTED
WIRING
BOARDS
B
Note:
®
O——=:
parts
extracted
from
the
component
side.
@
|
&&
indicates
side
identified
with
part
number.
)
:
Pattern
on
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pF:
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28C2603-EF
28C3113-AB
285C2669-OY
2SK246GR3
28C2785-HFE
Voltage
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no
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4:
internal
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variations
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to
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e
Waveforms
are
taken
with
a
oscilloscope.
Voltage
variations
may
be
noted
due
to
normal
produc-
tion
tolerances.
Note:
.
.
Note:
@
Circled
numbers
refer
to
waveforms.
The
components
identi-
fied
by
mark
Les
composants
identifiés
par
.
une
marque
/\
sont
critiques
©
Signal
path.
pour
la
sécurité.
c>
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Ne
les
remplacer
que
par
une
piéce
portant
le
numéro
spéci-
or
dot-
ted
line
with
mark
are
critical
for
safety.
Replace
only
with
part
number
specified.
fié.
®
:
Bt
line.
®
(8
-|
:
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line.
©
[_—]:
adjustment
for
repair.
3-4.
WAVEFORMS
ST-JX311/JX411
3-5.
SCHEMATIC
DIAGRAM
—Control
and
Power
Section—
@
Refer
to
page
13
for
note.
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2
22
23
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NOTE:
—XX,
—X
mean
standardized
parts,
so
they
may
have
some
differences
from
the
original
one.
Color
Indication
of
Appearance
Parts
Example:
KNOB,
BALANCE
si
et
ae
SECTION
4
EXPLODED
VIEW
Items
marked
“
*"’
are
not
stocked
since
they
are
seldom
required
for
routine
service.
Some
delay
should
be
antici-
pated
when
ordering
these
items.
The
mechanical
parts
with
no
reference
number
in
the
exploded
views
are
not
supplied,
The
components
identified
by
mark
or
dotted
line
with
mark
are
critical
for
safety.
eplace
only
with
part
number
specified.
Les
composants
identifiés
par
une
marque
sont
critiques
pour
la
sécurité.
Parts
Cabinet's
e
Hardware
(#
mark)
list
is
given
in
the
color
color
last
of
this
parts
list.
Ne
les
remplacer
que
par
une
piéce
portant
le
numéro
spécifé.
@®
Abbreviation
AUS:
Australian
ST-JX411:
E
Model
ST-JX411:
E
Model
ST-JX311
ST-JX411
a
\
pT501
~~
“Howe
ST-JX411
supplied
not
supplied
a“
Ref.
No.
Part
No.
Description
Remark
Ref.No.
Part
No.
Description
Remark
1
4-943-466-01
KNOB
(TUNING)
18
°
€
3-703-244-00
BUSHING
(2104),
CORD
(JX411:AUS)
2
4-$946-017-01
SPRING,
RING
18
#
3-703-571-11
BUSHING
(S)
(4516),
CORD
(JX411:US,
Canadian,
£)
3
A~4323-885-A
PANEL
ASSY,
FRONT
(JX311:US,
Canadian)
3
A~4323-886-A
PANEL
ASSY,
FRONT
(JX311:E,
AUS)
19
1-569-007-11
ADAPTER,
CONVERSION
2P
(JX411:€)
3
A-4323-888-A
PANEL
ASSY,
FRONT
(JX411:US)
20
#1-638-226-11
CONNECTOR
BOARD
(JX311)
3
A-4323-889-A
PANEL
ASSY,
FRONT
(JX411:E,
AUS)
21
3-704-242-01
SCREW,
TERMINAL,
+
BVTP
CLAW
(JX311)
3
A~4325-040-A
PANEL
ASSY.
FRONT
(JX411:Canadian)
22
4-923~-836-21
CUSHION
(JX411:
Canadian)
4
X-4905-269-1
SHAFT
ASSY,
TUNING
CN501
A\1-540-057-11
OUTLET,
AC
(POLAR)
(AC
OUTLET)
6
4-928-6§35-01
SCREW,
+BV
(2.
6X8)
TAPPING
(JX411:US,
Canadian)
CN501
A\1-540-038-11
OUTLET,
AC
(NONPOLAR)
(1P)
(JX411:€)
9
A-4341-787-A
CONTROL
BOARD,
COMPLETE
(JX411:US)
CN604
1-565-949-11
SOCKET,
CONNECTOR
9P
9
A-4341-788-A
CONTROL
BOARD,
COMPLETE
(JX411:Canadian)
(JX311:US,
Canadian,
E,
AUS)
9
A-4341-789-A
CONTROL
BOARD,
COMPLETE
(JX411:E)
9
&
A-4341-790-A
CONTROL
BOARD,
COMPLETE
(JX411:AUS)
CP1
A
1-551-188-XX
CORD,
POWER
(JX411:£)
CP1
AX
1-558-945-11
CORD,
POWER
(JX411:US,
Canadian)
10
4-917-460-41
KNOB,
POWER
(JX411)
CP1
=
AV
1-559-912-11
CORD,
POWER
(JX411:AUS)
1"
3-704-366-01
SCREW
(CASE)
(M3X8)
FL701
1-519-512-11
INDICATOR
TUBE,
FLUORESCENT
12
4-993-457-01
CASE
Pdi
*
1-580-691-11
JACK,
PIN
2P
(JX411)
13
3-318-688-51
FOOT
(F58175S)
(JX411:Canadian)
PT501
A\
1-450-386-11
TRANSFORMER,
POWER
(JX411:AUS,
E)
13
X-4941-228-1
FOOT
ASSY
(JX411:US,
E,
AUS)
PT501
A\
1-450-387-11
TRANSFORMER,
POWER
(JX411:US,
Canadian)
14
&
3-346-265-11
HOLDER,
PC
BOARD
$1
A\
1-572-267-21
SWITCH,
PUSH
(AC
POWER)
(1
KEY)
(JX411)
TMt
*
1-537-264-11
TERMINAL
BOARD
15
*
A-4341-783-A
TUNER
BOARD,
COMPLETE
VS1
AY
1-570-046-21
SWITCH,
VOLTAGE
CHANGE
(JX411:€)
(JX311:US,
Canadian)
15
*
A-4341-793-A
TUNER
BOARD,
COMPLETE
(JX311:E,
AUS)
15
*
A-4341-794-A
TUNER
BOARD,
COMPLETE
(JX411:US,
Canadian)
15
*
A-4341-795-A
TUNER
BOARD,
COMPLETE
(JX411:E,
AUS)
16
*
1-638~-229-11
POWER
BOARD
(JX411)
7
*&
4-943-471-01
PANEL,
BACK
(JX411:US,
Canadian)
Note:
Note:
17
&
4-943-471-11
PANEL,
BACK
(JX411:6)
The
components
identi-
Les
Tmerdue
identifiés
par
,
:
fied
by
mark
or
dot-
|
une
marque
sont
critiques
V7
*
4-943~471-21
PANEL,
BACK
(JX411;:AUS)
ted
line
with
mark
A
pour
la
sécurité.
17
*
4-943-472-01
PANEL,
BACK
(JX311:US,
Canadian,
AUS)
are
critical
for
safety.
Ne
tes
remplacer
que
par
une
7
&
4-943-472-11
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