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Marantz 2240 User Manual

Marantz 2240
43 pages
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2240

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Marantz 2240 Specifications

General IconGeneral
Power Output40 watts per channel into 8Ω (stereo)
Total Harmonic Distortion0.3%
Damping Factor45
Input Sensitivity2.2mV (MM), 180mV (line)
Speaker Load Impedance4Ω to 16Ω
Tuning RangeFM, MW
Semiconductors32 x transistors, 2 x IC
Signal to Noise Ratio85dB (line)

Summary

Introduction

Service Notes

FM Front End Unit

Describes the FM Front End unit, mounted on P.W. Board P100.

AM Tuner Unit

Details the AM Tuner section, composed of an IC and three transistors.

FM IF Amplifier Unit

Describes the FM IF Amplifier unit, mounted on P.W. Board P200.

MPX Unit

Describes the MPX Stereo Decoding Circuit, mounted on P.W. Board P300.

Power Amplifier Unit

Describes the Power Amplifier unit, mounted on P.W. Board P700.

Power Supply Unit

Describes the Power Supply unit, mounted on P.W. Board P800.

Suggestions for AM Tuner Trouble Shooting

FM Tuner

Audio Muting and Stereo Mode Auto-Selecting Circuit

Explains the solid-state muting circuit and stereo auto-selection.

MPX Stereo Decoding Circuit

Phono and Tone Amplifiers

Power Amplifier

Power Supply Unit

Speaker Protector Relay Circuit

Suggestions for Trouble Shooting of Power Amplifier

Test Equipment Required for Servicing

AM Alignment Procedure

FM Alignment Procedure

Stereo Separation Alignment

Muting Circuit Alignment

Dolby FM Tape Output Setting

Audio Adjustment

Parts List

Specifications

Audio Circuits

Detailed specifications for audio performance parameters.

FM Sections

Technical specifications for FM reception and performance.

General

General specifications including power requirements and dimensions.

Service Information for European Model

Voltage Conversion

FTZ Regulation

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