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Marantz 2275 User Manual

Marantz 2275
42 pages
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Marantz 2275 Specifications

General IconGeneral
Power Output75 watts per channel into 8Ω (stereo)
Total Harmonic Distortion0.25%
Speaker Load Impedance4Ω to 16Ω
AM Sensitivity20uV
Dimensions440 x 365mm
Tuning RangeFM, AM
Tuner SectionAM
Input Sensitivity180mV (line)

Summary

INTRODUCTION AND CIRCUIT OPERATION

Service Notes and Unit Descriptions

Describes the circuit board units and their mounting.

AM Tuner Circuitry

Details the AM tuner's signal path and components.

FM Tuner Circuitry

Explains the FM tuner's functional blocks and signal flow.

Audio Muting and MPX Stereo Decoding

Covers muting controls and MPX stereo decoding.

Amplifier Sections Overview

Describes phono, tone, and power amplifier sections.

Power Amplifier Protection and Troubleshooting

Details protection circuits and power amp troubleshooting.

SERVICING PROCEDURES AND TEST EQUIPMENT

Test Equipment Requirements

Lists essential test equipment for servicing.

AM Alignment Procedures

Provides step-by-step procedures for AM alignment.

FM Alignment and Adjustments

Covers FM alignment, stereo separation, and muting adjustment.

FM Dolby Level and Audio Adjustments

Details FM Dolby adjustment and various audio settings.

MARANTZ 2275 PARTS LIST

FM RF Circuit Board (P100) Components

Lists capacitors, coils, semiconductors for P100.

AM Tuner Board (P150) Components

Lists capacitors, resistors, coils for P150.

FM IF Amplifier Board (P200) Components

Lists resistors and capacitors for P200.

Power Amplifier (P700) Components

Lists capacitors, semiconductors, and miscellaneous parts for P700.

Pre/Tone Amplifier (PE01) Components

Lists resistors, capacitors, and semiconductors for PE01.

TECHNICAL SPECIFICATIONS

Pre-Amplifier and Amplifier Specifications

Details phono, tone, and power amplifier performance metrics.

FM and AM Receiver Specifications

Covers FM and AM section performance metrics.

EUROPEAN MODEL SPECIFIC INFORMATION

European Component Location Diagrams

Identifies fuse, rear panel, and chassis locations for European units.

Voltage Conversion and FTZ Regulation

Explains voltage conversion steps and FTZ compliance.

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