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Kenwood KR-V8020 User Manual

Kenwood KR-V8020
61 pages
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Kenwood KR-V8020 Specifications

General IconGeneral
Total Harmonic Distortion0.08%
Speaker load impedance4 - 16 ohms
Dimensions17.1 x 5.5 x 14.9 inches
Weight22.5 lbs
TypeReceiver
Tuning rangeFM
Power Output100 W per channel (8 ohms)
Frequency Response20Hz to 20kHz
Input Sensitivity2.5mV (MM), 200mV (line)
Signal-to-Noise Ratio100dB (line)
Speaker Impedance8Ω to 16Ω
Video ConnectionsComposite

Summary

External Component Identification

Front Panel Components

Identification of key components on the front panel.

Rear Panel Connectors

Identification of key connectors on the rear panel.

Other External Parts

Identification of other external parts like feet and cords.

Included Accessories

Antenna Accessories

Identification of FM and AM antennas and adaptors.

Power Accessories

Identification of batteries and remote control unit.

System Connections

Audio Component Connections

Guidance on connecting audio components to the unit.

Speaker System Connections

Guidance on connecting speaker systems to the unit.

Remote Control Operation

Remote Control Controls and Functions

Explanation of the remote control buttons and their functions.

Remote Control Operation Modes

Explanation of different operating modes for the remote control.

Disassembly Procedure - Front Panel

Removing Front Panel Assembly

Step-by-step guide to disassembling the front panel.

Disassembly Procedure - PC Boards

Removing PC Boards

Step-by-step guide to removing main PC boards.

Disassembly Procedure - Specific Boards

Removing the (X05-) (A/2) Board

Steps to remove the X05-(A/2) board.

Installing the (X05-) (A/2) Board

Steps to install the X05-(A/2) board.

Disassembly Procedure - Other Boards

Removing the (X08-) (A/7) Board

Steps to remove the X08-(A/7) board.

Installing the (X08-) (A/7) Board

Steps to install the X08-(A/7) board.

Block Diagram Overview

Audio and Tuner Signal Flow

Diagram showing audio and tuner signal paths.

Digital Processing and Amplifier Stages

Diagram showing digital delay and amplifier signal paths.

Circuit Description - Tuner Unit

Description of Tuner Components

Lists and describes components in the tuner unit.

Circuit Description - Pre-Amplifier Unit

Description of Pre-Amplifier Components

Lists and describes components in the pre-amplifier unit.

Circuit Description - Audio Unit

Description of Audio Components

Lists and describes components in the audio unit.

Circuit Description - Display Unit

Description of Display Components

Lists and describes components in the display unit.

Circuit Description - Main Amplifier Unit

Description of Main Amplifier Components

Lists and describes components in the main amplifier unit.

Microprocessor Peripheral Block Diagram

Main Microprocessor Connections

Diagram of main microprocessor connections to peripherals.

Display Microprocessor Connections

Diagram of display microprocessor connections.

Main Microprocessor Terminal Connections

Main Microprocessor Terminal Explanation

Explanation of each terminal on the main microprocessor.

Main Microprocessor Key Matrix

Describes the key matrix inputs for the main microprocessor.

Main Microprocessor Port Assignments

Main Microprocessor Port Status

Explains the port status for video functions.

Port Extension IC Assignments

Details pin assignments for port extension ICs.

Port Extension IC Terminal Explanations

IC5 Terminal Explanation

Explanation of IC5 terminals for relay and volume control.

IC6 Terminal Explanation

Explanation of IC6 terminals for display control.

Switch IC and PLL IC Port Assignments

Switch IC Assignments

Details assignments for TC9164N, TC9163N, and TC9162N ICs.

PLL IC Port Assignment

Details port assignment for the LM7001 PLL IC.

GE VR and EQ/SPI Display IC Control

Explains control for LC7522 and LC7565 ICs.

Electronic Volume Control

Explains control for TC9176P IC.

Sub Microprocessor (1) Terminal Connections

Sub Microprocessor (1) Terminal Explanation

Explanation of terminals for µPD7537ACU-220 (IC2).

Sub Microprocessor (1) Key Matrix

Describes the key matrix for the first sub microprocessor.

Sub Microprocessor (1) Terminal Explanations

Sub Microprocessor (1) Terminal Details

Detailed explanation of IC2 terminals (RESET, CL1, CL2, etc.).

Sub Microprocessor (2) Terminal Connections

Sub Microprocessor (2) Terminal Explanation

Explanation of terminals for µPD7537ACU-220 (IC3).

Sub Microprocessor (2) Key Matrix

Describes the key matrix for the second sub microprocessor.

Sub Microprocessor (2) Terminal Explanations

Sub Microprocessor (2) Terminal Details

Detailed explanation of IC3 terminals (RESET, CL1, CL2, etc.).

Test Mode Operations

Initial Setting Function

Describes the initial setting function of the unit.

Test Mode Setting

Describes how to enter and exit test mode.

Test Mode Contents

Details functions active in test mode (tuner frequencies, LEDs, volume).

Compressor/Expander IC - µPC1571C

Analog Converter Circuit

Explanation of the analog converter circuit for noise reduction.

Features of µPC1571C

Lists key features of the µPC1571C IC.

Standard Transfer Characteristics

Graph showing input/output characteristics of the IC.

Application Circuit Examples

Shows standard application circuit examples.

Compressor/Expander Circuit Examples

Compressor Application Circuit Example

Circuit diagram for compressor application.

Expander Operation Circuit Example

Circuit diagram for expander operation.

Headroom and Noise Level with Compressor/Expander

Theoretical values for headroom and noise level.

Digital Delay IC - YM3428

Digital Delay IC Outline

Overview of the YM3428 digital delay IC.

Digital Delay Function Outline

Explanation of the digital delay function and processing.

Digital Delay IC Terminal Connections

Digital Delay IC Terminal Diagram

Terminal connection diagram for YM3428.

Digital Delay IC Block Diagram

Block diagram of the digital delay system.

Digital Delay IC Terminal Explanations

Explanations for YM3428 IC terminals.

Dolby B Type Noise Reduction IC - LA2730

Dolby B NR IC Outline

Overview of the LA2730 IC for Dolby B noise reduction.

Modified B Type Processor Decode Characteristics

Table showing decode characteristics.

Dolby B NR IC Terminal Connections

Terminal connection diagram for LA2730.

Dolby B NR IC Block Diagram

Block diagram for the noise reduction circuit.

Adjustment Procedures - FM Section

FM Section Adjustments

Covers detector, distortion, VCO, separation, and tuning level adjustments.

Adjustment Procedures - AM Section

AM Section Adjustments

Covers band edge, RF alignment, IF transformer, and tuning level adjustments.

Adjustment Procedures - Audio Section

Audio Section Adjustment

Covers idle current adjustment.

Réglage FM Section

Réglage FM - Detecteur

Tuning detector adjustment steps.

Réglage FM - Distorsion (Mono)

Tuning distortion adjustment for mono.

Réglage FM - Oscillateur Contrôlé

Tuning voltage controlled oscillator adjustment.

Réglage FM - Distorsion (Stereo)

Tuning distortion adjustment for stereo.

Réglage FM - Séparation

Tuning separation adjustment.

Réglage FM - Niveau d'Accorder

Tuning level adjustment.

Réglage AM Section

Réglage AM - Bord de Bande (Bas)

AM band edge adjustment (low).

Réglage AM - Bord de Bande (Haut)

AM band edge adjustment (high).

Réglage AM - Alignement H.T.

AM RF alignment adjustments.

Réglage AM - Transformateur F.I.

AM IF transformer adjustment.

Réglage AM - Niveau d'Accorder

AM tuning level adjustment.

Réglage Audio Section

Réglage Audio - Courant de Polarisation

Audio section idle current adjustment.

Abgleich FM Section

Abgleich FM - Detektor

FM detector adjustment.

Abgleich FM - Klirrfaktor (Mono)

FM mono distortion adjustment.

Abgleich FM - Spannungs-Geregelter Oszillator

FM voltage-controlled oscillator adjustment.

Abgleich FM - Klirrfaktor (Stereo)

FM stereo distortion adjustment.

Abgleich FM - Trennung

FM separation adjustment.

Abgleich FM - Abstimm Pegel

FM tuning level adjustment.

Abgleich AM Section

Abgleich AM - Bandkante (Niedrig)

AM band edge adjustment (low).

Abgleich AM - Bandkante (Hoch)

AM band edge adjustment (high).

Abgleich AM - HF-Abgleich

AM RF alignment adjustments.

Abgleich AM - ZF-Übertrager

AM IF transformer adjustment.

Abgleich AM - Abstimm Pegel

AM tuning level adjustment.

Abgleich Audio Section

Abgleich Audio - Leerlaufstrom

Audio section idle current adjustment.

Wiring Diagram Overview

Tuner Unit Wiring

Wiring connections for the tuner unit.

Audio Unit Wiring

Wiring connections for the audio unit.

Pre-Amplifier Unit Wiring

Wiring connections for the pre-amplifier unit.

Display Unit Wiring

Wiring connections for the display unit.

PC Board Layout - Pre-Amplifier Unit

Pre-Amplifier Unit Component Layout

Component layout for the pre-amplifier board.

Surround Speaker Connections Layout

Layout for surround speaker connections.

PC Board Layout - Amplifier and Speaker Connections

Main Amplifier Unit Component Layout

Component layout for the main amplifier board.

Speaker Connections Layout

Layout for speaker connections.

PC Board Layout - Display Unit

Display Unit Component Layout

Component layout for the display unit board.

PC Board Layout - Main Controls

Main Control Area Layout

Component layout for main control keys and volume.

Volume Control Area Layout

Component layout for the volume control section.

PC Board Layout - Audio Unit

Audio Unit Component Layout

Component layout for the audio unit board.

PC Board Layout - Tuner and Main Amplifier Units

Tuner Unit Component Layout

Component layout for the tuner unit board.

Main Amplifier Unit Component Layout

Component layout for the main amplifier unit board.

Schematic Diagram - Tuner and Pre-Amplifier Units

Tuner Unit Schematic

Schematic diagram for the tuner unit.

Pre-Amplifier Unit Schematic

Schematic diagram for the pre-amplifier unit.

Schematic Diagram - Audio and Digital Delay Units

Audio Unit Schematic

Schematic diagram for the audio unit.

Digital Delay Unit Schematic

Schematic diagram for the digital delay unit.

Schematic Diagram - Amplifier and Control Units

Main Amplifier Unit Schematic

Schematic diagram for the main amplifier unit.

Control Circuit Schematic

Schematic diagram for control circuits.

Schematic Diagram - Microprocessors and Drivers

Main Microprocessor Schematic

Schematic diagram for the main microprocessor.

Sub Microprocessor Schematic

Schematic diagram for sub microprocessors.

Driver Circuit Schematic

Schematic diagram for driver circuits.

Schematic Diagram - Audio and System Control

Audio Circuit Schematic

Schematic diagram for the audio circuits.

System Control Schematic

Schematic diagram for system control circuits.

Schematic Diagram - Display and Remote Control

Display Unit Schematic

Schematic diagram for the display unit.

Remote Control Interface Schematic

Schematic diagram for remote control interface.

Schematic Diagram - Tuner and Front-End

Tuner Unit Schematic Details

Detailed schematic of the tuner unit.

Front-End Circuit Schematic

Schematic diagram of the front-end circuit.

Schematic Diagram - Audio and System Control

Audio Unit Signal Paths

Schematic showing signal paths in the audio unit.

System Control Signal Paths

Schematic showing signal paths in system control.

Exploded View - Main Unit Assembly

Main Unit Frame and Front Components

Exploded view of the main unit frame and front parts.

Internal Unit Assembly

Exploded view of internal unit assemblies.

Front Panel Controls and Buttons

Exploded view of front panel controls and buttons.

Rear Panel Connectors and Jacks

Exploded view of rear panel connectors and jacks.

Parts List - KR-V8020 Unit

Unit Chassis and External Parts

Parts list for chassis, panels, glass, and accessories.

Tuner Unit Parts

Parts list for the tuner unit.

Parts List - Pre-Amplifier Unit Components

Pre-Amplifier Unit Capacitors and Inductors

Parts list for capacitors and inductors in the pre-amp unit.

Pre-Amplifier Unit Resistors and Switches

Parts list for resistors and switches in the pre-amp unit.

Parts List - Pre-Amplifier Unit Continued

Pre-Amplifier Unit Other Components

Parts list for other components in the pre-amp unit.

Parts List - Display Unit Components

Display Unit Capacitors and Fuses

Parts list for capacitors and fuses in the display unit.

Display Unit Connectors and Jacks

Parts list for connectors and jacks in the display unit.

Parts List - Miscellaneous Components

Resistors and Potentiometers

Parts list for resistors and potentiometers.

Diodes and Switches

Parts list for diodes and switches.

Parts List - Integrated Circuits (ICs)

ICs for Audio and Signal Processing

Parts list for audio and signal processing ICs.

ICs for Microprocessors and Drivers

Parts list for microprocessor and driver ICs.

Parts List - Capacitors (Continued)

Capacitors C49-C82

Parts list for capacitors C49 through C82.

Capacitors C83-C102

Parts list for capacitors C83 through C102.

Parts List - Capacitors and Connectors

Capacitors C103-C183

Parts list for capacitors C103 through C183.

Connectors and Fuses

Parts list for connectors and fuses.

Parts List - Capacitors and Transistors

Capacitors C184-C54

Parts list for capacitors C184 through C54.

Transistors Q1-Q15

Parts list for transistors Q1 through Q15.

Parts List - Diodes and ICs

Diodes D1-D68

Parts list for diodes D1 through D68.

Parts List - Transistors and Display Unit Components

Transistors Q1-Q15 (Continued)

Parts list for transistors Q1 through Q15.

Display Unit Components

Parts list for the display unit components.

Parts List - Resistors and Diodes

Resistors R39-R64

Parts list for resistors R39 through R64.

Diodes D1-D68 (Continued)

Parts list for diodes D1 through D68.

Audio Section Specifications

Front and Rear Power Output

Specifications for front and rear power output.

Maximum Continuous Output Power

Specifications for maximum continuous output power.

Video Section Specifications

Video Inputs/Outputs

Specifications for video inputs and outputs.

FM Tuner Section Specifications

Tuning Frequency Range and Sensitivity

FM tuner frequency range and sensitivity specifications.

FM Tuner Signal-to-Noise Ratio and Distortion

FM tuner S/N ratio and distortion specifications.

FM Tuner Frequency Response and Separation

FM tuner frequency response and separation specifications.

AM Tuner Section Specifications

AM Tuner Tuning Range and Sensitivity

AM tuner tuning range and sensitivity specifications.

AM Tuner Signal-to-Noise Ratio and Distortion

AM tuner S/N ratio and distortion specifications.

AM Tuner Selectivity

AM tuner selectivity specifications.

General Specifications

Power Consumption and Dimensions

Specifications for power consumption and unit dimensions.

Net Weight

Specification for the net weight of the unit.

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