Sony ST-JX411 User Manual

3-753-100-21(1)
FM Stereo/FM-AM Tuner
ST-JX411
Operating Instructions
Before operating the unit, please read this manual thoroughly
and retain it for future reference.
Owner's Record
The model and serial numbers are located at the rear.
Record the serial number in the space provided below.
Refer to them whenever you call upon your Sony dealer
regarding this product.
Model No. ST-JX411 Serial No._
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol is intended to alert the
user to the presence of uninsulated
“dangerous voltage* within the prod¬
uct's enclosure that may be of suffi¬
cient magnitude to constitute a risk of
electric shock to persons.
This symbol is intended to alert the
user to the presence of important
operating and maintenance (servicing)
instructions in the literature accompa¬
nying the appliance.
* The graphical symbols are on the rear enclosure.
Precautions
On safety
• Before operating the unit, be sure that the operating
voltage of your unit is identical with that of your local
power supply.
• The name plate indicating operating voltage, power
consumption, etc. is located on the rear of the unit.
• Should any solid object or liquid fall into the unit, unplug
it and have it checked by qualified personnel before
operating it any further.
• Unplug the unit from the wall outlet if it is not to be used
for an extended period of time. To disconnect the cord,
pull it out by grasping the plug. Never pull the cord itself.
On Installation
• Place the unit on a level surface.
• Do not install the unit in a location near heat sources such
as radiators or air ducts, or in a place subject to direct
sunlight, excessive dust, mechanical vibration or shock.
• Good air circulation is essential to prevent internal heat
buildup in the unit. Place the unit in a location with
adequate air circulation. Do not place the unit on a soft
surface.
On cleaning the cabinet
Clean the cabinet, panel and controls with a soft cloth
lightly moistened with mild detergent solution. Do not use
any type of abrasive pad, scouring powder or solvent such
as alcohol or benzine.
On repacking
Do not throw away the carton and the packing material. It
makes an ideal container to transport the unit in.
For the customers in the U.S.A.
For detailed precautions, see the leaflet "IMPORTANT
SAFEGUARD*.
If you have any question or problem concerning your unit,
please consult your nearest Sony dealer.
© 1991 by Sony Coro oration

Sony ST-JX411 Specifications

FM Tuner Section

tuning range	87.5 - 108 MHz
antenna terminals	75 ohms unbalanced, 300 ohms balanced
intermediate frequency	10.7 MHz
sensitivity (at 50 dB quieting)	22.1 dBf, 7 μV (mono), 42.1 dBf, 70 nV (stereo)
usable sensitivity	19.5 dBf, 5 μV (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	30 Hz - 15 kHz ±1 dB
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 μV (30 dBf)
output	775 mV, 4.7 kohms (at 75 kHz deviation)

AM Tuner Section

tuning range	U.S.A. model: 530-1, 710 kHz (10 kHz), Australian model: 531-1, 602 kHz
antenna	AM loop antenna, External antenna terminal
intermediate frequency	450 kHz
usable sensitivity	AM loop antenna: 500 μV/m (999 kHz or 1, 000 kHz)
signal-to-noise ratio	54 dB
harmonic distortion	0.5%
selectivity	35 dB (9 kHz), 38 dB (10 kHz)
frequency response	30 Hz - 15 kHz ±1 dB

General

power requirements	U.S.A. model: 120 V AC, 60 Hz, Australian model: 240 V AC, 50 Hz
power consumption	8 W
dimensions	Approx. 430 x 80 x 295 mm (w/h/d) (17 x 3 1/4 x 11 5/8 inches)
weight	Approx. 2.6 kg (5 lb 12 oz)

Summary

Operating Instructions

Precautions

On Safety

General safety guidelines for operating the unit.

On Installation

Proper placement and environmental considerations for installation.

On Cleaning the Cabinet

Instructions for cleaning the unit's exterior.

On Repacking

Advice on retaining packing materials for transport.

Connections

Location of Controls

Identifies and describes the various controls and buttons on the unit.

AC Outlet (U.S.A. model only)

Details on the AC outlet for powering other components.

Antenna Ground

Instructions for grounding the antenna for optimal performance and safety.

Receiving Broadcast

Tuning in Automatically

Step-by-step guide for automatic radio tuning.

Tuning in Manually

Step-by-step guide for manual radio tuning.

Storing Station Frequencies into Memory

How Many Stations Can Be Stored

Information on the maximum number of stations storable in memory.

Station Storage Troubleshooting

Troubleshooting tips for when station storage fails.

Station Memory Retention

Details on the duration station presets are maintained.

Tuning into a Stored Station Directly

Instructions for directly tuning to preset stations.

Memory Scanning

Guide to sequentially scanning through stored radio stations.

Skipped Stations During Memory Scan

Explanation of which stored stations are skipped during scanning.

Troubleshooting

No Sound

Diagnoses and remedies for the 'No sound' issue.

Unable to Receive Stored Stations

Troubleshooting steps for issues with receiving stored stations.

STEREO Indicator Blinks

Explanation and solutions for a blinking STEREO indicator.

Too Many Noises

Causes and remedies for excessive noise during operation.

Unable to Scan Stored Stations

Steps to resolve issues when unable to scan stored stations.

Specifications

FM Tuner Section Specifications

Technical specifications for the FM tuner.

AM Tuner Section Specifications

Technical specifications for the AM tuner.

General Specifications

General technical details including power, dimensions, and weight.