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JVC RV-NB50B User Manual

JVC RV-NB50B
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SERVICE MANUAL
COPYRIGHT © 2010 Victor Company of Japan, Limited
No.MB723<Rev.003>
2010/4
POWERED WOOFER CD SYSTEM
MB723<Rev.003>20104SERVICE MANUAL
RV-NB50B, RV-NB50E, RV-NB50EN,
RV-NB50EV, RV-NB51WE, RV-NB51WEN,
RV-NB51WEV, RV-NB52BB, RV-NB52BE,
RV-NB52BEN, RV-NB52BEV, RV-NB50J,
RV-NB50C, RV-NB50US, RV-NB50A,
RV-NB52BJ
COPYRIGHT © 2010 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
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JVC RV-NB50B Specifications

General IconGeneral
TypePortable CD player
Playable CD MediaCD, CD-R, CD-RW
Audio FormatsMP3, WMA
SpeakersBuilt-in stereo speakers
BluetoothYes
USBYes
Audio Input3.5mm AUX input
Power SourceAC adapter or batteries
Microphone InputYes

Summary

SECTION 1 PRECAUTION

Safety Precautions

General safety guidelines, replacement parts, and electrical hazard testing procedures.

Warning and Cautionary Notes

Warnings regarding international standards, repairer responsibility, and chassis burrs.

Critical Safety Components Identification

Identifying safety-critical parts marked on printed circuit boards.

Static Electricity Prevention Methods

Procedures to prevent ESD damage to sensitive components like laser diodes.

Optical Pickup Unit Handling Guidelines

Guidelines for safely handling and replacing the sensitive optical pickup unit.

SECTION 3 DISASSEMBLY

Main Body Disassembly Steps

Procedures for disassembling the main unit, including panels and cabinets.

Board and Mechanism Removal

Steps for removing SMPS, power supply boards, and the CD mechanism.

Main Board and Peripheral Component Removal

Instructions for removing the main board and connected components.

Speaker and Front Panel Disassembly

Steps for disassembling speakers, front panel, iPod, LCD, and key boards.

Left Speaker Assembly Removal

Procedure for removing the left speaker assembly.

SCHEMATIC DIAGRAMS

Block Diagrams Overview

Overview of the system's functional blocks and interconnections.

Standard Circuit Schematics

Detailed circuit diagrams for the main sections of the system.

Printed Circuit Board Layouts

Visual representation of component placement on the main circuit boards.

PARTS LIST

Exploded View and Assembly Parts Identification

Visual breakdown of the unit's assemblies and component identification.

General Assembly Parts Listing

Detailed list of parts for the general assembly, categorized by model.

Electrical Component Listing

Comprehensive list of electrical parts, including ICs, transistors, and passive components.

Key, iPod, and Packing Material Parts

Parts lists for key/iPod boards and packing/accessory items.

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