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Sony ST-S311 Service Manual

Sony ST-S311
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SERVICE.
MANUAL
FM
tuner
Frequency
range
Antenna
terminals
ST-S311
SPECIFICATIONS
AM
tuner
87.5
-
108
MHz
Frequency
range
75
Q
unbalanced
Intermediate
frequency
10.7
MHz
Sensitivity
Usable
sensitivity
Signal-to-noise
ratio
Harmonic
distortion
Frequency
response
Separation
Selectivity
Output
(mono
S/N
26
dB)
10.3
dBf,
0.9
nV/75
Q;
(stereo
S/N
46
dB);
38.5
dBf,
23
uV/75
Q
10.3
dBf,
0.9
uV/75
Q.
(IHF)
(at
40
kHz
deviation)
80
dB
(mono)
76
dB
(stereo)
WIDE
0.04%
(mono)
0.05%
(stereo)
NARROW
0.06%
(mono)
0.08%
(stereo)
30
Hz
-
15
kHz,
(+0.2
dB,
—0.5
dB)
50
dB
(at
1
kHz)
(at
400
kHz)
WIDE
80
dB
NARROW
90
dB
(at
300
kHz)
WIDE
45
dB
NARROW
70
dB
(at
40
kHz
deviation)
600
mV
Selectivity
Signal-to-noise
ratio
Harmonic
distortion
EXCEPT
IT
Model
:
MW:
531-1,602
kHz
(9kHz
step)
LW:
153-279
kHz
(1
kHz
step)
IT
Model
:
MW:
522-1,611kHz
(9
kHz
step)
LW:
144-288kHz
(1
kHz
step)
Intermediate
frequency
450
kHz
Usabie
sensitivity
(with
AM
loop
antenna)
300
wV/m
(999
kHz);
1
mV/m
(216
kHz)
54
dB
(50
mV/m,
999
kHz).
50
dB
(50.mV/m,
216
kHz)
0.3%
(50
mV/m,
400
Hz)
32
dB
Power
requirements
Power
consumption
Accessories
supplied
AEP
Model
UK
Model
UK
Model
:
240
V
AC,
50/60Hz
EXCEPT
UK
Model
:
220
230V
AC,
50/60
Hz
12W
Approx.
430
mm
(W)
x
85
mm
(H)
x
295
mm
(D)
(17
x
3°/s
x
115/s
inches)
Approx.
3.0
kg
(6
Ib.
10
0z.)
Connecting
cord
(1);
AM
loop
antenna
(1);
FM
antenna
(1)
Design
and
specifications
are
subject
to
change
without
notice.
*
IT:
Italian
model
FM
STEREO
/FM-AM
TUNER
SONY.
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Sony ST-S311 Specifications

General IconGeneral
Tuner TypeAnalog
TypeStereo Tuner
Tuning BandsFM, MW
Tuning ScaleAnalog
Frequency Range MW531 - 1602 kHz
Sensitivity MW300 µV/m
Signal to Noise Ratio FM70 dB
Signal to Noise Ratio MW45 dB
Distortion FM0.3%
Frequency Range FM87.5 - 108.0 MHz
Distortion MW0.5%
Frequency Response20 Hz - 15 kHz
Power SupplyAC 230V, 50/60Hz
Dimensions430 x 85 x 280 mm

Summary

Specifications

FM Tuner Specifications

Detailed technical parameters for the FM receiver section.

AM Tuner Specifications

Detailed technical parameters for the AM receiver section.

General Specifications

Power, dimensions, mass, and included accessories for the unit.

Model Identification and Safety

Model Identification

How to identify the specific model and its label details.

Safety Warnings

Critical warnings for safe component replacement and operation.

Section 1 General

Tuner Setup Guide

Step-by-step instructions for connecting and setting up the tuner.

Control Identification

Overview and naming of all front panel controls and indicators.

Section 2 Adjustments

FM Discriminator Adjustment

Procedure for tuning FM distortion and null points.

FM Muting Level Adjustment

Procedure for setting the FM signal muting threshold.

FM Signal Level Adjustment

How to adjust the FM signal level meter indication.

FM Narrow Gain Adjustment

Procedure for optimizing the narrow IF band gain.

FM Stereo Separation Adjustment

Steps to adjust FM stereo channel separation.

AM Signal Level Adjustment

Procedure for setting the AM signal strength indicator.

Tuner Board Adjustment Locations

Diagram showing the physical location of adjustment points on the tuner board.

Section 3 Diagrams

Block Diagram

Overall functional block diagram of the tuner's electronic system.

Semiconductor Lead Layouts

Physical pinout diagrams for semiconductor components.

Printed Wiring Board Layouts

Layouts of the main printed circuit boards.

Schematic Diagram

Detailed electronic circuit schematic of the tuner.

IC Block Diagrams

Internal functional diagrams for key integrated circuits.

IC Pin Descriptions

Detailed pinout and function descriptions for integrated circuits.

Section 4 Exploded Views

Exploded View Parts List

List of parts identified in the exploded view diagrams.

Section 5 Electrical Parts List

Capacitors

List of all capacitors, including part numbers and values.

Resistors

List of all resistors, including part numbers and values.

Coils

List of all coils, including part numbers and inductance.

Semiconductors

List of all semiconductor components and their part numbers.

Miscellaneous and Accessories

Miscellaneous Items

Listing of various items like cords and hardware.

Accessories and Packing Materials

Included accessories and packing materials list.

Hardware List

Inventory of screws and fasteners.

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