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Sony ICF-SW7600 - User Manual

Sony ICF-SW7600
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SONY
LW/MW/SW/FM Stereo
PLL Synthesized Receiver
3-75M55-2a (1)
ICF-SW7600
Operating Instructions page 2
Before operating the unit, please read this manual thoroughly and
retain it for future reference.
Owner’s Record
The model number is located on the front panel and the serial
number is under the rear stand. Record the serial number in the
space provided below. Refer to these numbers whenever you call
upon your Sony dealer regarding this product.
Model No. ICF-SW7600 Serial No..
Mode d’emploi
PROPERTY Cf lui
NATiOKAL TECHNICAL DEPT.
page 36
Avant de faire fonctionner cet appareil, prière de lire attentivement
ce mode d'emploi et de le conserver à titre de référence ultérieure.
FILE СОРУ
©1989 by Sony Corporation

Table of Contents

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Preview: Service Manual
Service Manual27 pages
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Summary

Warning and Information

Safety Warnings

Crucial safety precautions to prevent fire and electrical shock hazards.

Features and Precautions

Receiver Features Overview

Highlights wide band coverage, PLL synthesizer, and tuning capabilities.

Usage Precautions

Essential guidelines for operating the unit safely and maintaining performance.

Location and Function of Controls

Front and Side Panel Controls

Description of buttons and indicators on the front and side panels.

Top and Rear Panel Connections

Power Sources

Battery Power

Details on using AA batteries for the receiver's operation.

External Power Adapters

Guidance on using AC power adapters for different voltage requirements.

How to Set the Clock

Direct Tuning Operation

Manual and Scan Tuning

Manual Tuning Method

Preset Tuning and Scan Notes

Preset Tuning Procedure

Tuning Preset Stations

How to Tune in SSB Transmissions

Automatic Timer Standby Function

Recording Radio Programs and Specifications

Troubleshooting Guide

Summary

Warning and Information

Safety Warnings

Crucial safety precautions to prevent fire and electrical shock hazards.

Features and Precautions

Receiver Features Overview

Highlights wide band coverage, PLL synthesizer, and tuning capabilities.

Usage Precautions

Essential guidelines for operating the unit safely and maintaining performance.

Location and Function of Controls

Front and Side Panel Controls

Description of buttons and indicators on the front and side panels.

Top and Rear Panel Connections

Power Sources

Battery Power

Details on using AA batteries for the receiver's operation.

External Power Adapters

Guidance on using AC power adapters for different voltage requirements.

How to Set the Clock

Direct Tuning Operation

Manual and Scan Tuning

Manual Tuning Method

Preset Tuning and Scan Notes

Preset Tuning Procedure

Tuning Preset Stations

How to Tune in SSB Transmissions

Automatic Timer Standby Function

Recording Radio Programs and Specifications

Troubleshooting Guide

Overview

  1. Function Description
  2. Important Technical Specifications
  3. Usage Features
  4. Maintenance Features

The Sony ICF-SW7600 is a versatile LW/MW/SW/FM Stereo PLL Synthesized Receiver, designed for worldwide band coverage and precise tuning.

Function Description

The ICF-SW7600 operates as a multi-band radio receiver, capable of receiving Long Wave (LW), Medium Wave (MW), Short Wave (SW), and FM stereo broadcasts. It utilizes a Quartz controlled PLL (Phase Locked Loop) synthesizer system with a microcomputer for accurate and easy pinpoint tuning, with the tuned frequency digitally displayed.

Key features include:

  • Direct Tuning: Allows users to tune into a station by directly inputting its frequency.
  • Manual Tuning: Enables precise tuning even if the exact frequency is unknown.
  • Scan Tuning: Automatically searches for and stops on receivable stations within a specified frequency range.
  • Preset Tuning: Up to 10 stations (FM and AM combined) can be stored for quick, button-touch access.
  • Fine Tuning Control: Provides precise adjustment for difficult-to-receive stations, particularly useful for SSB transmissions.
  • SSB (Single Side Band) Reception: Capable of receiving SSB transmissions, which are popular in ham and business radio, offering improved signal intelligibility. It supports both Lower Side Band (LSB) and Upper Side Band (USB) modes, as well as CW (Continuous Wave) reception.
  • Timer Standby: Allows the radio to automatically turn on at a desired time to receive a preset station.
  • Sleep Timer: Automatically turns off the radio after 65 minutes, useful for listening before sleep.
  • Recording Output: Features a TAPE REC OUT jack and a REMOTE control jack, enabling connection to an optional Sony TCM-27 cassette-corder for recording programs at a desired time.
  • Sensitivity Selector (SENS DX - LOCAL): Helps improve reception by adjusting sensitivity, with DX for distant stations and LOCAL for strong local signals to prevent distortion.
  • Tone Selector (MUSIC/NEWS): Optimizes audio output for either music or human voice (news) for clearer listening.
  • MW Channel Step Selection: The MW channel step can be switched between 9 kHz and 10 kHz to match the frequency allocation system of different countries (e.g., North America, South America use 10 kHz; other countries use 9 kHz).
  • Key Protect Function: Prevents accidental changes to the receiving station by disabling front panel buttons.

Important Technical Specifications

  • Circuit System: FM: Superheterodyne; AM: Dual conversion superheterodyne.
  • Frequency Range:
    • FM: 87.5-108 MHz (Other countries), 76-108 MHz (Saudi Arabia, France, Germany, Scandinavian countries).
    • LW: 150-285 kHz (Saudi Arabia), 150-528 kHz (Other countries).
    • MW: 531-1611 kHz (with 9 kHz step), 530-1610 kHz (with 10 kHz step).
    • SW: 1615-26100 kHz (Saudi Arabia), 1615-29995 kHz (Other countries).
  • Antennas: Telescopic antenna (FM/SW), Built-in ferrite bar antenna (MW/LW).
  • Speaker: Approx. 77 mm (3 1/9 inches) diameter, 8 ohms.
  • Power Output: 400 mW (at 10% harmonic distortion).
  • Recording Output Jack (minijack): Output level 0.775 mV (-60 dB), output impedance 1 kilohm.
  • Headphone Jack (stereo minijack): For 16 ohm stereo earphones.
  • Power Requirements: 6 V DC.
    • Four size AA (R6) batteries.
    • Supplied AC power adaptor (120 V AC for U.S.A. model; 110, 120, 220, or 240 V AC adjustable for Canadian model).
    • Optional DCC-127A car battery cord for 12 V car battery.
    • Optional DCC-240 car battery cord for 24 V car battery.
  • Battery Life: Approx. 10 hours of listening for four hours a day at normal volume using Sony SUM-3 (NS) batteries.
  • Dimensions (W/H/D): Approx. 191.2 x 118 x 32.3 mm (7 5/8 x 4 3/4 x 1 5/8 inches) including projecting parts and controls.
  • Weight: Approx. 615 g (1 lb. 5.7 oz.) including batteries.
  • Accessories Supplied: Stereo earphones (1), Ear adaptor (2), AC power adaptor (1), Compact antenna (1), Antenna connector (1), Carrying case (1), Wave handbook (1).
  • Optional Accessories: Car battery cords (DCC-127A, DCC-240), Connecting cords (RK-G69), Plug adaptor (PC-261M), Cassette-corder (TCM-27), LW/MW/SW wide range antenna (AN-1, AN-102).

Usage Features

  • Ease of Use: The digital display and PLL synthesizer system make tuning straightforward.
  • Portability: Designed for portable use with battery power and a compact form factor, including a carrying case.
  • Versatile Power Options: Can be powered by internal batteries, house current via an AC adaptor, or a 12 V car battery with an optional cord.
  • External Antenna Support: Includes an EXT ANT jack for connecting optional external antennas (like the supplied SW compact antenna or other commercially available antennas) to enhance reception, especially in challenging environments like steel-frame buildings or mountainous areas.
  • Stand: Features a rear stand for convenient tabletop placement.
  • Display Illumination: A LIGHT button illuminates the display window for about 15 seconds for viewing in low light.

Maintenance Features

  • Battery Replacement: All four AA (R6) batteries should be replaced when sound becomes weak or distorted. It's important to do this within ten minutes to prevent the erasure of preset stations and current time, which are backed up by the built-in computer.
  • Cleaning: The casing should be cleaned with a soft cloth dampened with a mild detergent solution. Abrasive cleansers or chemical solvents should be avoided to prevent marring the casing.
  • Environmental Considerations:
    • Avoid leaving the unit near heat sources, in direct sunlight, or in places with excessive dust or mechanical shock.
    • Operate within a temperature range of 0°C to 40°C (32°F to 104°F) to ensure proper display and frequency function.
  • Safety Precautions:
    • Do not expose the unit to rain or moisture.
    • Do not open the cabinet; refer servicing to qualified personnel.
    • If any solid object or liquid falls into the unit, remove batteries and have it checked by qualified personnel.
    • Keep personal credit cards and spring-wound watches away from the speaker due to its strong magnet.
    • When using an external antenna, disconnect its AC power adaptor immediately if there is lightning.
    • When receiving MW or LW without an external antenna, disconnect any SW external antenna to ensure the built-in ferrite bar antenna functions correctly.
  • Troubleshooting Guide: The manual provides solutions for common issues such as no power, dim display, no sound, weak reception, and problems with tuning or timer functions.

Sony ICF-SW7600 Specifications

General IconGeneral
BrandSony
ModelICF-SW7600
CategoryStereo Receiver
LanguageEnglish

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