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Aiwa NSX-DR4 User Manual

Aiwa NSX-DR4
48 pages
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SERVICE MANUAL
COMPACT DISC STEREO
CASSETTE RECEIVER
BASIC TAPE MECHANISM : ZZM-2 YR1NFS
BASIC CD MECHANISM : AZG-1 ZA3RNDM
NSX-DR4
EZ
S/M Code No. 09-008-428-8R5
• If requiring information about the CD mechanism, see Service Manual
of AZG-1 (S/M Code No. 09-001-335-3NC).
NSX-DR4
SPEAKER
SYSTEM
CD
CASSEIVER
REMOTE
CONTROLLER
CX-NDR4 SX-NBL11
RC-ZAS02
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Aiwa NSX-DR4 Specifications

General IconGeneral
CD PlayerYes
Remote ControlYes
DisplayLCD
EqualizerYes
Radio TunerAM/FM

Summary

System Specifications

Tuner and Amplifier Specifications

Details FM, MW, LW tuner specs and amplifier power, distortion, inputs/outputs.

CD and Cassette Deck Specifications

Covers CD player specs (laser, D-A) and cassette deck specs (format, response, heads).

Speaker System and General Specs

Details speaker system parameters and general unit requirements, consumption, dimensions.

Laser Safety Precautions

General Laser Beam Warnings

Critical safety warnings for eye protection during laser servicing, including international advisories.

Optical Block Replacement Safety

Precautions regarding static discharge when replacing the optical pickup block.

Pre-Repair Procedures

Electrolytic Capacitor Discharge

Procedure for safely discharging power supply capacitors before starting repairs.

Microcomputer Diagnostic Checks

Essential checks before replacing the microcomputer, focusing on the HOLD terminal and reset.

Electrical Main Parts List

ICs, Transistors, and Diodes

Lists of integrated circuits, transistors, and diodes with part numbers and descriptions.

Circuit Board Components

Detailed listing of capacitors and other components on the main circuit board.

Chip Resistor Coding and Transistor Outlines

Explanation of chip resistor coding and visual representations of transistors.

Component Grid Assignment

FL Display Grid Assignment

Diagram showing grid assignment for the FL display component (10-BT-224GNK).

Wiring Diagrams

Main Circuit Board Wiring

Wiring diagram for the main circuit board, detailing connections.

Front Circuit Board Wiring

Wiring diagram for the front circuit board, covering controls and display.

Tape Mechanism Wiring

Wiring diagram for the tape mechanism, showing Deck 1 and Deck 2 connections.

Schematic Diagrams

Amplifier and Tuner Sections

Detailed schematics for the amplifier (p.13) and tuner (p.14) sections.

Front and PT Circuit Boards

Detailed schematics for the front (p.16) and PT (p.17) circuit boards.

3CD Circuit Board Schematic

Detailed schematic diagram for the 3CD circuit board.

Integrated Circuit Details

IC Block Diagrams

Block diagrams showing internal structure and pin functions of key ICs.

Specific IC Pinout Descriptions

Detailed pinout and functional descriptions for specific ICs like LC78622NE.

Adjustment Procedures

Tuner Section Adjustments

Procedures for tuning, VT, tracking, and IF adjustments for tuner sections.

Deck Section Adjustments

Procedures for tape speed, azimuth, and frequency response adjustments for decks.

Front Section Oscillator Adjustment

Procedure for adjusting the u-CON OSC in the front section.

Mechanical Information

Overall Mechanical Exploded View

Exploded view of the main unit's mechanical components.

Mechanical Parts Lists

Comprehensive lists of mechanical parts and tape mechanism parts.

Color Name Table

Table mapping basic color symbols to their corresponding color names.

Speaker Disassembly

Speaker Disassembly Instructions

Step-by-step instructions for disassembling speaker units.

Speaker Panel Removal Methods

Specific methods for removing the speaker's front panel using tools.

Accessories and Speaker Parts

Speaker Parts List

List of parts for the SX-NBL11 speaker system.

Accessories and Package Contents

List of included accessories and package contents.

Gear Phase Adjustment

Gear Main Cam Phase Adjustment

Procedure to adjust the rotating phase of the gear and main cam for correct operation.

Waveform Analysis

Signal Waveforms at Key Test Points

Oscilloscope waveforms for key IC test points to verify signal integrity.

System Block Diagram

Overall System Block Diagram

Diagram illustrating interconnections between major system sections and ICs.

Test Mode Operations

CD Test Mode Activation and Functions

Instructions for activating, cancelling, and using functions within the CD test mode.

Specific IC Pinout Descriptions

Detailed pinout and functional descriptions for specific ICs like LC78622NE.

Reference Name Lists

Electrical Component Glossary

Glossary of terms for electrical components and their functions.

Mechanical Part Glossary

Glossary of terms for mechanical parts and their functions.

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