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Sony ICF-S79 User Manual

Sony ICF-S79
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ICF-S79
FM/AM SYNTHESIZED RADIO
ICF-S79L
FM/MW/LW SYNTHESIZED RADIO
ICF-S79V
TV/WEATHER/FM/AM SYNTHESIZED RADIO
MICROFILM
US Model
ICF-S79V
AEP Model
ICF-S79/S79L
UK Model
ICF-S79L
SPECIFICATIONS
SERVICE MANUAL
ICF-S79/S79L/S79V
Photo: ICF-S79V
Notes on chip component replacement
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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Sony ICF-S79 Specifications

General IconGeneral
Product colorWhite
Radio typeClock
Tuner typeAnalog
Number of batteries supported3

Summary

Specifications

Frequency Range

Details radio frequency bands and channel steps for different regions.

Time Display

Specifies 12-hour or 24-hour system based on model and region.

Speaker Specifications

Details speaker size and impedance.

Power Output

Specifies power output level with distortion.

Power Requirements

Details power source and battery type.

Dimensions

Provides physical measurements of the unit.

Mass

Indicates the weight of the unit.

Supplied Accessories

Lists items included with the radio.

Chip Component Replacement Precautions

General Section

Before You Begin

Provides initial instructions and model differences.

Key Features

Highlights splash resistance, timer, AUTO OFF, and PLL tuner.

Installing the Batteries

Battery Life

Estimates operating hours with different battery types.

Replacing the Batteries

Battery Notes

Provides important precautions regarding battery handling.

Setting the Clock

Operating the Radio

Manual Tuning

Instructions for tuning stations manually.

Weather Band Operation

Guide for listening to the weather broadcast band.

Preset Tuning

Instructions for storing and recalling preset stations.

Presetting a Station

Step-by-step guide to saving a station to a preset button.

Countdown Timer

Using Preset Timer Buttons

How to use timer functions with preset buttons.

Presetting a Countdown Time

Other Features

AUTO OFF Function

Explains the automatic radio shut-off feature.

Using the Strap

General Precautions

Water Immersion Warning

Critical warning against submerging the unit in water.

Disassembly

Rear Cabinet Disassembly

Step-by-step guide to disassembling the rear cabinet.

Electrical Adjustments

FM Frequency Coverage Adjustment

Procedure for adjusting FM frequency coverage.

FM Tracking Adjustment

Procedure for adjusting FM signal tracking.

LW Frequency Coverage Adjustment

Procedure for adjusting LW frequency coverage.

LW Tracking Adjustment

Procedure for adjusting LW signal tracking.

AM (MW) Frequency Coverage Adjustment

Procedure for adjusting AM (MW) frequency coverage.

AM (MW) Tracking Adjustment

Procedure for adjusting AM (MW) signal tracking.

TV Frequency Coverage Adjustment

Procedure for adjusting TV frequency coverage.

TV Tracking Adjustment

Procedure for adjusting TV signal tracking.

TV IF Adjustment

Procedure for adjusting TV Intermediate Frequency.

AM IF Adjustment

Procedure for adjusting AM Intermediate Frequency.

Adjustment and Connection Locations

FM Adjustments and Connections

Locations for FM frequency and tracking adjustments.

AM (MW) Adjustments and Connections

Locations for AM (MW) frequency and tracking adjustments.

LW Adjustments and Connections

Locations for LW frequency and tracking adjustments.

TV Adjustments and Connections

Locations for TV frequency, tracking, and IF adjustments.

AM IF Adjustment and Connection

Location for AM IF adjustment.

Diagrams

Printed Wiring Boards

Layout diagrams of the main and key boards.

Changing Ceramic Filters

Instructions for replacing ceramic filters, including color codes.

Semiconductor Locations

Reference table for semiconductor component locations.

Printed Wiring Board Notes

Key for understanding printed wiring board markings.

Schematic Diagram (ICF-S79/S79L)

Schematic Diagram Notes

Explanations of symbols and notations used in the schematic.

Signal Path

Indicates signal flow for FM, AM, and LW.

Waveforms

IC Block Diagrams

IC1 TA7358P Block Diagram

Block diagram for IC1 TA7358P, specific to ICF-S79V.

IC Pin Function Descriptions

IC6 (μPD17071GB-517-1A7) Pin Functions

Detailed pin functions for IC6, the system controller.

Band Select Signal Logic

Explanation of band select signal logic for BAND1 and BAND2 pins.

Exploded View

Electrical Parts List

Key Board Parts

List of switches and components for the key board.

Band Pass Filter Parts

List of band pass filter components.

Capacitor and Chip Conductor Parts

List of capacitors and chip conductors.

Diode and Chip Conductor Parts

List of diodes and chip conductors.

IC Components

List of integrated circuits used in the device.

Ceramic Filter Parts

Trimmer Parts

Chip Conductor Parts

Transistor Parts

Resistor and Chip Conductor Parts

Liquid Crystal Display Part

Variable Resistor Part

Transformer Parts

Vibrator Part

Miscellaneous Parts

Accessories and Packing Materials

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