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Harman Kardon AVR 7300 Service Manual

Harman Kardon AVR 7300
99 pages
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AVR 7300 Audio/VideoReceiver
SERVICE MANUAL
Power for the Digital Revolution
®

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Harman Kardon AVR 7300 Specifications

General IconGeneral
TypeAV Receiver
Channels7.1
THD0.07 %
Input Impedance47 kOhms
Input Sensitivity200 mV
Signal to Noise Ratio100 dB
Component Video Inputs3
Component Video Outputs1
Digital Coaxial Inputs3
Surround SoundDolby Digital
HDMI Inputs0
HDMI Outputs0
Width17.3 inches

Summary

Technical Specifications

Audio Section

Details specifications for stereo and multi-channel audio modes, including power output, input sensitivity, and frequency response.

FM Tuner Section

Provides specifications for the FM tuner, covering frequency range, sensitivity, signal-to-noise ratio, and distortion levels.

AM Tuner Section

Lists specifications for the AM tuner, including frequency range, signal-to-noise ratio, sensitivity, and distortion.

Video Section

Details video specifications such as format, input/output levels, and frequency response for composite, S-Video, and component signals.

General Specifications

Covers general specifications like power requirements, consumption, dimensions, and weight of the receiver.

Exploded View Parts List

Main Components

Lists major external and internal parts of the AVR7300, including chassis, panels, buttons, and heat sinks.

Connectors and Jacks

Details various input/output connectors like speaker jacks, RCA jacks, S-Video, and headphone jacks.

Electronic Components

Lists electronic components such as capacitors, resistors, diodes, and transistors used in the device.

Adjustment Procedures

Offset Adjustment

Procedure for adjusting the DC offset for each channel to ensure proper audio signal output.

Idle Current Adjustment

Procedure for setting the idle current for each channel amplifier to ensure optimal performance.

Block Diagram

Audio Signal Path

Diagram illustrating the flow of audio signals from input sources through processing to output.

Video Signal Path

Diagram showing the video signal processing stages, including input selection and output.

Control and Power Systems

Overview of control signals, remote control interface, and power supply distribution.

Wiring Diagram

Board Interconnections

Illustrates how the various circuit boards (Main, Processor, Tuner, etc.) are interconnected via connectors and cables.

Schematic Diagrams

Video Section Schematics

Detailed circuit diagrams for the video input/output and processing sections.

Supply Section Schematics

Circuit diagrams for the power supply unit, including voltage regulation and filtering.

Processor Section Schematics

Circuit diagrams detailing the main processor and DSP functionalities.

Amplifier Section Schematics

Circuit diagrams for the 3-channel and 4-channel amplifier boards.

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