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Sansui 300 User Manual

Sansui 300
34 pages
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Sansui 300 Specifications

General IconGeneral
Damping Factor20
Frequency Response20Hz to 20kHz
Channel Separation50dB (line)
Speaker Load Impedance8Ω to 16Ω
Input Impedance50kΩ
Speaker Impedance4-16Ω
Input Sensitivity2.5mV

Summary

Front Panel Controls and Indicators

Dial Scales and FM Stereo Indicator

Illuminated FM/AM tuning scales and the FM stereo reception indicator.

Tuning, Power, and Headphone Controls

Tuning knob, tuning meter, power switch, and headphone jack for device operation.

Tone, Volume, and Balance Controls

Bass, Treble, Volume, and Balance controls for adjusting audio output.

Additional Operational Controls

Tuning Knob and Selector Switch

Tuning knob for station selection and selector switch for input sources.

Mode, Loudness, and Tape Switches

Mode, Loudness, MPX Noise Canceler, and Tape Monitor switches for audio features.

Operation: Speaker and Record Player Setup

Speaker Connection and Polarity

Guide for connecting speakers, matching polarity, and impedance considerations.

Record Player Connectivity Options

Instructions for connecting turntables to PHONO or AUX inputs.

Playing a Record

Record Playback Procedure

Steps for setting selector, mode, and balancing sound levels for record playback.

Monophonic Record Playback Notes

Tips for optimal playback of monophonic records on a stereo system.

Antenna Connections and Radio Reception

AM Antenna Setup and Usage

Details on using the built-in ferrite bar and external AM antennas.

FM Antenna Setup and Options

Methods for connecting indoor dipole, 300-ohm, and 75-ohm FM antennas.

FM Radio Reception Tuning

Steps for tuning and receiving FM broadcasts using the receiver.

Radio Reception Procedures

AM Radio Tuning Guide

Instructions for setting the selector and tuning AM broadcasts.

Antenna Connection Diagrams

Illustrations for connecting FM and AM antennas for optimal reception.

Tape Recorder Operations

Tape Recorder Connectivity Options

Connecting tape recorders via DIN or pin plug cables.

Tape Monitoring Procedure

Instructions for monitoring recorded tapes during the recording process.

Tape Recording and Playback Procedures

Tape Recording Steps

Setting selector, mode, and starting tape recording.

Tape Playback Steps

Setting tape monitor switch and starting playback of recorded tapes.

Tape Recorder Connection Diagrams

Diagrams illustrating tape recorder connections for recording and playback.

Maintenance: Noise Reduction and Heat

Reducing AM Broadcast Noise

Tips for minimizing AM noise from location or electrical interference.

Reducing FM Broadcast Noise

Methods for minimizing FM noise from weak signals or appliances.

Addressing Persistent Noise

Troubleshooting general noise from electrical appliances or interference.

Ensuring Proper Heat Dissipation

Recommendations for maintaining optimal heat dissipation for the amplifier.

Maintenance: Connectivity and Grounding

Connecting External Audio Components

Guidance on connecting phonographs and tape recorders using shielded cables.

Troubleshooting Playback Noise

Resolving booming or howling noise during record or tape playback.

Grounding Procedures for Noise Reduction

Instructions for grounding the receiver to reduce noise and improve stability.

Rear Panel AC Outlet Usage

Information on the use and capacity of the rear panel AC outlet.

Maintenance: Power and Speaker Management

Voltage Adjustment Procedure

Steps for setting the receiver voltage selector for different regions.

Main Power Fuse Replacement

Procedure for identifying and replacing a blown main power fuse.

Quick-Acting Fuse Troubleshooting

Diagnosing and replacing quick-acting fuses in the amplifier channels.

Speaker Power Handling Guidelines

Advice on matching speaker power ratings to the amplifier's output capacity.

Technical Specifications

Troubleshooting Guide

Disassembly and Dial Mechanism

Front Panel, Bonnet, Bottom Plate Removal

Instructions for disassembling the front panel, bonnet, and bottom plate.

Dial Mechanism Diagram

Illustration of the dial mechanism components and their arrangement.

Block Diagram

Alignment Test Points

FM Alignment Procedures

FM IF Transformer Alignment

Procedure for aligning the FM intermediate frequency transformer circuit.

FM Discriminator Alignment

Procedure for aligning the FM discriminator circuit for optimal signal.

FM Local Oscillator Alignment

Procedure for aligning the FM local oscillator and associated tuning coils.

FM HF Amplifier Circuit Alignment

Procedure for aligning the FM high-frequency amplifier circuits.

FM Multiplex Alignment Procedures

FM Multiplex 67kHz Trap Alignment

Procedure for tuning the 67kHz trap in the FM multiplex section.

FM Multiplex 19kHz Tuning Coil Alignment

Procedure for aligning the 19kHz tuning coil for FM multiplex reception.

FM Multiplex 38kHz Tuning Coil Alignment

Procedure for aligning the 38kHz tuning coil for FM multiplex reception.

FM Multiplex Separation VR Adjustment

Adjusting the separation VR for optimal stereo separation in FM multiplex.

AM Alignment Procedures

AM IF Transformer Alignment

Procedure for aligning the AM intermediate frequency transformers.

AM Local Oscillator Alignment

Procedure for aligning the AM local oscillator and tuning trimmer.

AM HF Amplifier Circuit Alignment

Procedure for aligning the AM high-frequency amplifier circuits.

Printed Circuit Boards: Power and Tone Control

Power Block F-1152A Parts List

List of components and their locations for the Power Block F-1152A.

Tone Control Block F-1156 Parts List

List of components and their locations for the Tone Control Block F-1156.

Printed Circuit Boards: Equalizer Amplifier

Equalizer Amp. Block F-1157 Parts List

List of components and their locations for the Equalizer Amplifier Block F-1157.

Printed Circuit Boards: FM IF and Driver Amp

FM IF Block F-1165B Parts List

List of components and their locations for the FM IF Block F-1165B.

Driver Amp. Block F-1119B Parts List

List of components and their locations for the Driver Amplifier Block F-1119B.

Printed Circuit Boards: AM Tuner

AM Tuner Block F-1172A Parts List

List of components and their locations for the AM Tuner Block F-1172A.

Printed Circuit Boards: Multiplex Block

Multiplex Block F-10991 Parts List

List of components and their locations for the Multiplex Block F-10991.

Printed Circuit Boards: FM Stereo Indicator and Other Parts

FM Stereo Indicator Block F-1203A Parts List

List of components and their locations for the FM Stereo Indicator Block F-1203A.

Other Parts and Chassis Positions

List of miscellaneous components and their physical locations on the chassis.

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