Aiwa SX-WNA555 User Manual

anua
NSX=MA545
NSX-AV540
COMPACT DISC STEREO SYSTEM
REVISION PUBLISHING
SYSTEM CD - CASSIVER
SPEAKER
NSX-MA545 CX-NMA545
SX-WNA555
NSX-AV540 CX-NAV540
SX-NS552
● This Service Manual is the “Revision Publishing” and replaces “Simple
Manual” NSX-MA545 (MM Code No. 09-98C-323-OT1).
alwa
SERVICE
● If requiring information about the CD mechanism,see Service Manual of 4ZG-1
(SLM Code No. 09-983-249-3S2).

Aiwa SX-WNA555 Specifications

General

Brand	Aiwa
Model	SX-WNA555
Category	Stereo System
CD Player	Yes
Aux Input	Yes
Remote Control	Yes
Type	Mini Hi-Fi System
Tuner Bands	FM, AM

Summary

Specifications

FM and MW Tuner Specifications

Details tuning range, sensitivity, and antenna terminals for FM and MW bands.

Amplifier Section Specifications

Power output, harmonic distortion, input/output levels for amplifier sections.

Cassette and CD Player Specifications

Track format, frequency response, heads, laser, D-A converter, S/N, distortion.

Safety and Precautions

Laser Beam Safety During Servicing

Instructions to protect eyes from laser radiation during maintenance.

Optical Block Replacement Precautions

Guidelines for replacing optical blocks, preventing damage from static.

Pre-Repair Procedures

Electrolytic Capacitor Discharge

Procedure to safely discharge power supply capacitors before repair.

Microcomputer Exchange Checks

Steps to verify microcomputer functionality before replacement.

Electrical Main Parts List

IC Parts

List of integrated circuits used in the main unit.

Transistor Parts

List of transistors used in the main unit.

Diode Parts

List of diodes used in the main unit.

Schematic Diagrams

Schematic Diagram 1 (Main: U)

Schematic for the main unit (U model).

Schematic Diagram 2 (Main: LH)

Schematic for the main unit (LH model).

Schematic Diagram 5 (Prologic: U)

Schematic Diagram 6 (Amp: U)

Schematic Diagram 7 (Deck)

Schematic Diagram 8 (Tuner)

Schematic Diagram 9 (PS: U)

Schematic Diagram 11 (Tuner Front End)

Schematic Diagram 2 (Main-Deck)

Schematic Diagram 3 (Main-Prologic)

Schematic Diagram 4 (Amp)

Schematic Diagram 6 (PS)

Tuner Adjustment Procedures

Clock, VT, and Tracking Checks (AM/FM)

Procedures for checking clock frequency, VT, and tracking for AM/FM.

IF and Balance Adjustments

Procedures for adjusting AM IF, DC balance, and mono distortion.

Auto Stop Level Check

Deck Adjustment Procedures

Tape Speed and Azimuth Adjustments

Procedures for adjusting tape speed and head azimuth.

Response and Sensitivity Checks

Procedures for checking PB frequency response and sensitivity.

REC/PB Adjustments and OSC

Procedures for REC/PB response, sensitivity, and µ-con OSC adjustment.

Practical Service Figures

Tuner Section Service Figures

Deck Section Service Figures

Mechanical Exploded Views

Exploded View 1/1 (Main Unit)

Tape Mechanism Exploded View 1/1 (U)

Tape Mechanism Exploded View 1/1 (LH)

Mechanical Parts List

Mechanical Parts List 1/1

Tape Mechanism Parts List 1/1 (U)

Tape Mechanism Parts List 1/1 (LH)

Speaker Service

Speaker Disassembly Instructions

Step-by-step guide for disassembling speaker units.

Speaker Panel Handling

Speaker Parts Lists

Speaker Parts List SX-WNA555

Speaker Parts List SX-NS552