Sony STR-NX3 Service Manual

SERVICE MANUAL
MICROFILM
Sony Corporation
Home Audio Company
MINI Hi-Fi COMPONENT SYSTEM
99H001688-1
Printed in Japan ©1999.8
Published by Quality Assurance Dept.
• MHC-NX1/NX3AV is composed of following models.
As for the service manual, it is issued for each component model,
then, please refer to it.
ACCESSORIES & PACKING MATERIALS
********************************
1-418-548-11 REMOTE COMMANDER (RM-SX10) (NX1)
1-418-549-11 REMOTE COMMANDER (RM-SX15) (NX3AV)
1-501-374-11 ANTENNA,LOOP
1-501-594-11 ANTENNA (FM) (AEP,UK)
1-501-659-41 ANTENNA (FM) (US,CND,E,AU,JE)
1-769-306-11 CORD,SPEAKER (1.5m) (FOR SS-NX1)
1-769-433-11 CORD,SPEAKER (1m) (FOR SS-RC100)
1-769-433-21 CORD,SPEAKER (2.5m) (FOR SS-RC100)
3-867-106-11 MANUAL,INSTRUCTION (ENGLISH)
(NX1:US,CND,AEP,UK,CIS,MY,SP,JE)
3-867-106-21 MANUAL,INSTRUCTION (FRENCH,SPANISH)
(NX1:CND,AEP,MY,SP)
3-867-106-31 MANUAL,INSTRUCTION (GERMAN) (NX1:AEP,G)
3-867-106-41 MANUAL,INSTRUCTION
(DUTCH,ITALIAN,PORTUGUESE) (NX1:AEP)
3-867-106-51 MANUAL,INSTRUCTION
(DANISH,FINISH,SWEDISH) (NX1:AED)
3-867-106-61 MANUAL,INSTRUCTION (POLISH,RUSSIAN)
(NX1:CIS)
3-867-106-71 MANUAL,INSTRUCTION (CHINESE) (NX1:MY,SP)
3-867-106-81 MANUAL,INSTRUCTION (KORIAN) (NX1:KR,JE)
3-867-106-91 MANUAL,INSTRUCTION (PORTUGUESE)
(NX1:JE)
3-867-107-11 MANUAL,INSTRUCTION (ENGLISH)
(NX3:US,CND,AEP,UK,CIS,MY,SP,AUS)
9-928-979-11
MHC-NX1/NX3AV
HCD-NX1/HCR-NX3
US Model
Canadian Model
AEP Model
UK Model
E Model
MHC-NX1/NX3AV
Tourist Model
MHC-NX1
Australian Model
MHC-NX3AV
COMPONENT MODEL NAME FOR MHC-NX1/NX3AV
HCD-NX1 is composed of STR-NX1 and HTC-NX1.
HCR-NX3 is composed of STR-NX3 and HTC-NX1.
PARTS LIST
MHC-NX1 MHC-NX3AV
TUNER,AMPLIFIER STR-NX1 STR-NX3
CD PLAYER ,TAPE DECK HTC-NX1
FRONT SPEAKER SYSTEM SS-NX1
CENTER/REAR
SS-RC100
SPEAKER SYSTEM
3-867-107-21 MANUAL,INSTRUCTION (FRENCH,SPANISH)
(NX3:CND,AEP,MY,SP)
3-867-107-31 MANUAL,INSTRUCTION (GERMAN) (NX3:AEP,G)
3-867-107-41 MANUAL,INSTRUCTION
(DUTCH,ITALIAN,PORTUGUESE) (NX3:AEP)
3-867-107-51 MANUAL,INSTRUCTION
(DANISH,FINISH,SWEDISH) (NX3:AED)
3-867-107-61 MANUAL,INSTRUCTION (POLISH,RUSSIAN)
(NX1:CIS)
3-867-107-71 MANUAL,INSTRUCTION (CHINESE) (NX3:MY,SP)
3-867-107-81 MANUAL,INSTRUCTION (KORIAN) (NX3:KR)
3-867-339-11 MANUAL,INSTRUCTION (CZECH) (NX3,AED)
3-867-339-21 MANUAL,INSTRUCTION (HUNGARIAN)
(NX3,AED)
3-867-339-31 MANUAL,INSTRUCTION (GREEK) (NX3,AED)
3-867-339-41 MANUAL,INSTRUCTION (TURKISH) (NX3,AED)
3-867-340-11 MANUAL,INSTRUCTION (CZECH) (NX3,AED)
3-867-340-21 MANUAL,INSTRUCTION (HUNGARIAN)
(NX3,AED)
3-867-340-31 MANUAL,INSTRUCTION (GREEK) (NX3,AED)
3-867-340-41 MANUAL,INSTRUCTION (TURKISH) (NX3,AED)
3-867-790-11 MANUAL,INSTRUCTION (ENGLISH,FRENCH,
GERMAN,SWEDISH,RUSSIAN) (SS-NX1)
3-867-936-11 MANUAL,INSTRUCTION (THAI) (NX1:TH)
4-210-254-01 CUSHION (FOOT) (FOR SS-NX1)
4-981-643-21 COVER,BATTERY (FOR RM-SX10/SX15)
Ref. No. Part No. Description Remark
Ref. No. Part No. Description Remark
• Abbreviation
AED : North European AUS : Australian
CND : Canadian G : German
JE : Tourist KR : Korean
MY : Malaysia SP : Singapore
TH : Thai

Sony STR-NX3 Specifications

General

Brand	Sony
Model	STR-NX3
Category	Tuner
Language	English

Summary

Component Model Name and Parts List

Component Model Name for MHC-NX1/NX3AV

Lists component models composing the MHC-NX1/NX3AV system.

Parts List

Provides a comprehensive list of replacement parts for the unit.

Specifications Overview

CD Player Section Specifications

Technical specifications for the CD player, including laser output and frequency response.

Tape Player Section Specifications

Technical specifications for the tape deck, including frequency response and output level.

Servicing, General, and Disassembly Information

Servicing Notes

Important notes and precautions for servicing the appliance.

General Information

General information about the unit, including controls and model identification.

Power Supply During Servicing

Instructions for supplying power during servicing procedures.

Disassembly Overview

Step-by-step instructions for disassembling the unit for repair.

Optical Pick-up Cleaning

Guide for cleaning the optical pick-up lens assembly.

Case Removal

Steps for removing the main outer case of the unit.

Front Panel Section Disassembly

Steps for disassembling the front panel assembly.

CD Mechanism Deck Section

Procedure for removing the CD mechanism deck.

Tape Mechanism Deck Section

Procedure for removing the tape deck mechanism.

CD Base Unit Section

Exploded view and parts for the CD base unit.

Chassis Section

Exploded view of the main chassis and its components.

Test Modes and Procedures

LED All Lit, Key Check Mode

Tests all LEDs and checks button functionality.

CD Delivery Mode

Moves optical pick-up for shipping; used after repair.

Tape Deck Test Mode

Tests tape deck functions and amplifier status.

MC Cold Reset

Resets all user data and settings to factory defaults.

Aging Mode

Performs automated operational checks on CD and tape deck sections.

Mechanical and Electrical Adjustments

Torque Measurement

Specifies torque values for mechanical component adjustments.

Tape Deck Section Adjustments

Electrical adjustments for the tape deck's recording and playback.

Record/Playback Head Azimuth Adjustment

Procedure to align playback heads for optimal signal clarity.

Tape Speed Adjustment

Adjusts tape speed for accurate frequency response.

Playback Level Adjustment

Adjusts playback signal levels for L-CH and R-CH channels.

REC Bias Adjustment

Adjusts recording bias for tape decks to optimize recording quality.

REC Level Adjustment

Adjusts recording signal levels for tape decks.

Diagrams and Waveforms

Notes for Diagrams

Notes on interpreting wiring boards and schematic diagrams.

CD Section S-Curve Check

Checks S-curve waveform symmetry and peak-to-peak levels.

CD Section RF Level Check

Checks the clarity and level of the RF signal waveform.

BD Board Printed Wiring Board

Component layout for the BD board.

BD Board Schematic Diagram

Circuit schematic for the BD board.

CD Motor/Sensor Section Printed Wiring Boards

Component layout for CD motor/sensor sections.

CD Motor/Sensor Section Schematic Diagram

Circuit schematic for CD motor/sensor sections.

AUDIO Board Printed Wiring Board

Component layout for the AUDIO board.

AUDIO Board Schematic Diagram

Circuit schematic for the AUDIO board.

LEAF SW Board Printed Wiring Board

Component layout for the LEAF SW board.

LEAF SW Board Schematic Diagram

Circuit schematic for the LEAF SW board.

MAIN Board Printed Wiring Board

Component layout for the MAIN board.

MAIN Board Schematic Diagram (1/2)

Part 1 of the MAIN board circuit schematic.

MAIN Board Schematic Diagram (2/2)

Part 2 of the MAIN board circuit schematic.

PANEL Section Printed Wiring Boards

Component layout for PANEL sections.

PANEL Section Schematic Diagram

Circuit schematic for PANEL sections.

IC Pin Function Description

Details pin functions for ICs on the MAIN board.

Waveforms

Illustrates typical waveforms for various test points.

IC Block Diagrams

Shows block diagrams for key ICs on the BD board.

Exploded Views of Unit Sections

(1) General Section Exploded View

Exploded view of the main unit chassis and related parts.

(2) Front Panel Section Exploded View

Exploded view of the front panel assembly and its components.

(3) CD Mechanism Deck Section-1 Exploded View

Exploded view of the CD mechanism deck section 1.

(4) CD Mechanism Deck Section-2 Exploded View

Exploded view of the CD mechanism deck section 2.

(5) CD Base Unit Section Exploded View

Exploded view of the CD base unit section.

(6) Tape Mechanism Deck Section-1 Exploded View

Exploded view of the tape mechanism deck section 1.

(7) Tape Mechanism Deck Section-2 Exploded View

Exploded view of the tape mechanism deck section 2.

Electrical Parts Lists by Board

AUDIO Board Parts List

List of electrical parts for the AUDIO board.

PA Board Parts List

List of electrical parts for the PA board.

MAIN Board Parts List

List of electrical parts for the MAIN board.

PANEL Sections Parts List

List of electrical parts for the PANEL sections.

TRANS Board Parts List

List of electrical parts for the TRANS board.