JVC KS-AR7002J - User Manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited
No.MA347
2007/8
POWER AMPLIFIER
MA34720078SERVICE MANUAL
KS-AR7002J, KS-AX5602E,
KS-AX5602U
COPYRIGHT © 2007 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
KS-AX5602KS-AR7002

JVC KS-AR7002J Specifications

General

Amplifier Class	AB
Number of Channels	2
RMS Power at 4 Ohms	70W x 2
RMS Power at 2 Ohms	100W x 2
Bridged RMS Power at 4 Ohms	200W x 1
Frequency Response	5Hz - 50kHz
Signal-to-Noise Ratio	90 dB
THD at 4 Ohms	0.08%
Power Output	200W
Crossover	50 - 200 Hz

Summary

Product Specifications

KS-AR7002 Specifications

Detailed specifications for the KS-AR7002 model.

KS-AX5602 Specifications

Detailed specifications for the KS-AX5602 model.

Safety Precautions

Chassis Burrs Warning

Caution about burrs on chassis during repair.

Disassembly Procedures

Main Unit Disassembly

Disassembly procedures for the main unit, using KS-AR7002 as reference.

Removing the Bottom Cover

Step-by-step guide to remove the bottom cover of the unit.

Removing Crossover Board Assembly

Instructions for removing the crossover board assembly.

Removing LED Board Assembly

Instructions for removing the LED board assembly.

Removing Illuminator LED Board Assembly

Instructions for removing the illuminator LED board assembly.

Removing Main Board Assembly

Instructions for removing the main board assembly.

Parts List

Exploded View and Parts Identification

Visual guide showing assembly and part identification.

General Assembly Parts

List of parts for the general assembly, including part numbers and descriptions.

Electrical Component Lists

Main Board Components

List of electrical components for the main circuit board.

PWM-C Board Components

List of electrical components for the PWM-C circuit board.

Sub1 Board Components

List of electrical components for the Sub1 circuit board.

Packaging and Accessories

Included Packaging and Accessories

List of packing materials and included accessories.

Schematic Diagrams

Block Diagram Overview

High-level overview of the audio amplifier's functional blocks.

Audio Section Schematics

Detailed circuit diagrams for the audio sections.

Input, Crossover, Front Section Schematics

Schematic for the input, crossover, and front-end circuitry.

Power Section Schematics

Schematic for the power supply and output stages.

Printed Circuit Board Layouts

Main PCB Layout

Layout diagrams for the forward and reverse sides of the main PCB.

Sub PCB Layout

Layout diagrams for the forward and reverse sides of the sub PCB.

PWM PCB Layout

Layout diagrams for the forward and reverse sides of the PWM PCB.