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Harman Kardon AVR245 Service Manual

Harman Kardon AVR245
228 pages
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harman/kardon
AVR245
7 X 50W 7.1 CHANNEL A/V RECEIVER
SERVICE MANUAL
CONTENTS
ESD WARNING……………………………….2
LEAKAGE TESTING……………….…..…....3
BASIC SPECIFICATIONS…………………..4
PACKAGING…………………………….……5
FRONT PANEL CONTROLS………..…..…..6
REAR PANEL CONNECTIONS………….…8
REMOTE CONTROL FUNCTIONS……….11
CONNECTIONS/INSTALLATION………....14
OPERATION………………………...………25
TROUBLESHOOTING GUIDE…...……..…32
REMOTE & PROCESSOR RESETS……....33
DISASSEMBLY……………………………….34
UNIT EXPLODED VIEW…………..…….…..38
EXPLODED VIEW PARTS LIST……………39
AMP BIAS ADJUSTMENT……………….…40
BLOCK DIAGRAM…………………………..41
PCB DRAWINGS……………………………42
ELECTRICAL PARTS LIST………..………53
SEMICONDUCTOR PINOUTS…….………97
SCHEMATICS………………………………220
WIRING DIAGRAM…………………………228
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797 Rev 0 1/2007

Table of Contents

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Harman Kardon AVR245 Specifications

General IconGeneral
Number of Channels7.1
HDMI Inputs2
HDMI Outputs1
Dolby DigitalYes
DTSYes
Weight12.7 kg
TypeAV Receiver
Input Sensitivity200mV
Tone controlBass, Treble
Headphone outputYes
DecoderDolby Digital, DTS
DSPYes
Tuner typeAM/FM
Number of preset stations30
Remote controlYes
Width440 mm
Height165 mm
Depth382 mm
Total Harmonic Distortion0.07%
Dimensions440 x 165 x 382 mm
Power Output50 watts per channel
Input Impedance47kohm
Digital inputsOptical, Coaxial
Digital outputs1 Optical
Frequency Response10Hz - 100kHz
Video InputsComposite, S-Video, Component
Video OutputsComposite, S-Video, Component
Audio Outputs7.1 channel
Audio InputsAnalog

Summary

Electrostatically Sensitive Devices

Safety Precautions

Leakage Current Check

Procedure to measure leakage current to earth ground to ensure safety.

Installation

Connect the Speakers

Connect speaker wires to the AVR 245 speaker terminals.

Connect the Subwoofer

Connect the Subwoofer Output to the subwoofer's line-level input.

Connect the Source Components

Connect audio/video source devices to the AVR 245 inputs.

Connect Video Display

Connect the AVR 245 video outputs to your display (TV).

Plug in AC Power

Connect AC power cords to all components.

Troubleshooting Guide

Processor Reset

Reset the AVR 245 to factory default settings.

Disassembly

Amplifier Section Bias Adjustment

Electrical Parts List

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