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Sony STR-AV270X Service Manual

Sony STR-AV270X
26 pages
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Sony STR-AV270X Specifications

General IconGeneral
BrandSony
ModelSTR-AV270X
CategoryReceiver
LanguageEnglish

Summary

Receiver Specifications

Audio Power and Distortion

Details on power output and total harmonic distortion for amplifier section.

Amplifier Performance Specs

Specs for amplifier power, distortion, frequency response, and inputs.

Tuner Section Performance

Specifications for FM and AM tuning, sensitivity, selectivity, and separation.

Output and Control Features

Details on audio outputs, tone controls, muting, and DBFB.

General Unit Information

Power, Dimensions, and Accessories

Covers power requirements, consumption, dimensions, weight, and included accessories.

Safety Procedures

Leakage Current Testing

Describes methods to test AC leakage current for safety compliance.

Unit Controls and Operation

Front Panel Controls Overview

Explains the function of each control on the receiver's front panel.

Remote Commander Usage

Details the buttons and functions of the RM-S103 remote control.

FM/AM Broadcast Tuning

Broadcast Reception Methods

Explains tuning by frequency or presets, and automatic/direct tuning.

Manual and Preset Tuning

Details manual AM tuning and memorizing/recalling preset stations.

Electrical Adjustments

FM Discriminator and Stereo Adjustments

Procedures for FM discriminator, stereo level, and separation adjustments.

Ceramic Filter Replacement Notes

Guidance on replacing ceramic filters and FM IF offset adjustment.

Circuit Diagrams and Layouts

Block Diagram

Overall system block diagram showing signal flow.

Circuit Board Locations

Visual guide to the placement of major circuit boards.

Semiconductor Lead Configurations

Pinout details for various transistors, ICs, and diodes.

Printed Wiring Board Layouts

Layouts for the main and tuner sections' printed wiring boards.

Schematic Diagrams

Detailed circuit schematics for the main and tuner sections.

Tuner Section Diagrams

Specific diagrams and layouts for the tuner section.

Microcomputer IC Explanation

IC301 Pin Functions

Detailed explanation of the pins and functions of IC301 (µPD75206).

IC301 Signal and Function Mapping

Continuation of IC301 pin functions, including input/output and active states.

Exploded Views

Front Panel Assembly

Illustrates the parts and assembly of the front panel.

Chassis Section Components

Shows the parts and assembly of the receiver's chassis.

Electrical Parts List

AC Switch and Display Components

Lists parts for AC switch and display sections.

Power and Standby Components

Lists parts for power and standby sections.

Volume Control Components

Lists parts related to the volume control circuit.

Main and Tone Control Components

Lists parts for the main audio and tone control circuits.

Speaker, Muting, and HP Components

Lists parts for speaker selection, muting, and headphone circuits.

Tuner Section Components

Lists parts for the tuner section, including filters and oscillators.

Filter and Connector Components

Lists parts like filters, connectors, and front-end components.

Transistor and Resistor Lists

Lists transistors and resistors used in various sections.

Resistor Lists

Continues listing various resistors used throughout the unit.

Capacitors and ICs

Lists capacitors, ICs, and front-end components for tuner and other sections.

Tuner Transistors and Resistors

Lists transistors and resistors specific to the tuner section.

Miscellaneous and Hardware Parts

Lists wires, fuses, transformers, accessories, and hardware.

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