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Harman Kardon hk440 Vxi User Manual

Harman Kardon hk440 Vxi
54 pages
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Harman Kardon hk440 Vxi Specifications

General IconGeneral
Frequency Response20Hz to 20kHz
Total Harmonic Distortion0.09%
Input Sensitivity (MM)2.5mV
Input Sensitivity (line)150mV
Signal to Noise Ratio (MM)80dB
Signal to Noise Ratio (line)95dB
Speaker Load Impedance (minimum)4 ohms
Tuning RangeFM, MW
Damping Factor40
Speaker Impedance8Ω

Summary

Specifications

Leakage Test Procedures

Safety Checks for Service Engineers

Procedures to ensure safety after servicing the unit.

Disassembly Procedures

Block Diagram

Signal Flow Overview

Visual representation of signal paths and component interconnections.

Alignment Procedures

Idling Current Adjustment

Procedure for adjusting the unit's idling current.

AM and FM Signal Alignment

Steps for tuning and calibrating AM and FM tuner sections.

IC Block Diagram

Printed Circuit Board Layouts

PCB-1 Power Amp. P. C. Board

Layout diagram for the Power Amplifier PCB.

PCB-13 Tuner P. C. Board

Layout diagram for the Tuner PCB.

Wiring Diagram

General Model Wiring

Schematic showing wiring connections for the general model.

Electrical Parts List

Schematic Diagram (1)

FM TUNER

Detailed circuit diagram for the FM tuner section.

Schematic Diagram (2)

FM Signal Path

Circuit diagram showing FM signal processing and ICs.

AM Signal Path

Circuit diagram showing AM signal processing and ICs.

Schematic Diagram (3)

Phono, CD, Video Inputs

Circuitry for input signal selection and pre-amplification.

Tone, Balance, and Volume Controls

Circuitry for audio equalization and level adjustment.

Amplifier Output Stages

Circuitry for power amplification and speaker output.

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