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JBL Soundgear Series User Manual

JBL Soundgear Series
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Soundgear Series
SG2020 SG3030
3 CD Changer Hi-Fi System
PRELIMINARY
SERVICE MANUAL
JBL Incorporated, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
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JBL Soundgear Series Specifications

General IconGeneral
BluetoothYes
WirelessYes
Charging Time2 hours
TypeWearable Speaker
Wearing StyleNeckband
Battery Life6 hours
Dimensions242 x 207 x 44 mm

Summary

Servicing Precautions

Notes for Transport and Storage

Guidelines for handling and storing the pick-up unit safely.

Repair Notes for Pick-up Unit

Important considerations and warnings when repairing the pick-up mechanism.

Compact Disc Player Repair Notes

Repair Preparations

Essential steps and precautions before starting CD player repairs.

Specific Repair Guidelines

Essential guidelines for handling components and tools during repairs.

Clearing Unit Malfunctions

Procedure for resetting the unit to its initial status via a reset wire.

ESD Precautions

Product Specifications

Amplifier Specifications

Detailed specifications for the amplifier section of the units.

Tuner Specifications

Technical details for the FM, AM, SW, and LW tuner sections.

Cassette Deck Specifications

Performance details for the cassette playback and recording functions.

CD Player Specifications

Technical specifications for the CD playback functionality.

General Unit Specifications

Overall specifications including power, dimensions, and weight.

Unit Adjustments

Tape Deck Adjustment Procedures

Instructions for adjusting tape deck azimuth and speed settings.

Azimuth Adjustment

Procedure for adjusting tape deck azimuth for optimal playback.

Normal Speed Adjustment

Steps for adjusting tape deck normal and hi-speed playback.

Record Bias Adjustment

Procedure for setting record bias for tape recording.

Tuner Adjustment Procedures

Procedures for tuning the radio receiver for optimal signal reception.

Troubleshooting Guide

Waveforms of Major Checkpoints

HF (RF) Signal Waveform

Waveform characteristics of the HF or RF signal during normal play.

EFM Signal Waveform

Waveform of the EFM signal at IC 801 during normal playback.

Focus Coil Drive Waveform

Waveforms related to focus coil drive during search or successful focus.

Tracking Coil Drive Waveform

Waveforms for tracking coil drive during forward and backward traverse.

Feed Motor Drive Waveform

Waveform for the feed motor drive during normal play.

Wiring Diagrams

Wiring Diagram SG2020

Wiring diagram illustrating connections for the SG2020 model.

Wiring Diagram SG3030

Wiring diagram illustrating connections for the SG3030 model.

Block Diagrams

Block Diagram SG2020

Block diagram showing the functional components of the SG2020.

Block Diagram SG3030

Block diagram showing the functional components of the SG3030.

Schematic Diagrams

Schematic Diagram: Power 1 (SG2020)

Schematic showing the power supply circuit for SG2020, version 1.

Schematic Diagram: Power 2 (SG3030)

Schematic showing the power supply circuit for SG3030, version 2.

Schematic Diagram: Power 3 (SG2020 UL)

Schematic showing the power supply circuit for SG2020 UL version, 3.

Schematic Diagram: Power 4 (SG3030 UL)

Schematic showing the power supply circuit for SG3030 UL version, 4.

Schematic Diagram: Tuner 1 (SG2020)

Schematic of the tuner section for SG2020, version 1.

Schematic Diagram: Tuner 2 (SG3030)

Schematic of the tuner section for SG3030, version 2.

Schematic Diagram: Tuner 3 (SG2020 UL)

Schematic of the tuner section for SG2020 UL version, 3.

Schematic Diagram: Tuner 4 (SG3030 UL)

Schematic of the tuner section for SG3030 UL version, 4.

Schematic Diagram: Main 1 (SG2020)

Schematic of the main board for SG2020, version 1.

Schematic Diagram: Main 2 (SG3030)

Schematic of the main board for SG3030, version 2.

Schematic Diagram: Main 3 (SG2020 UL)

Schematic of the main board for SG2020 UL version, 3.

Schematic Diagram: Main 4 (SG3030 UL)

Schematic of the main board for SG3030 UL version, 4.

Schematic Diagram: Front 1 (SG2020/SG3030)

Schematic of the front panel for SG2020/SG3030, version 1.

Schematic Diagram: Front 2 (SG2020/SG3030 UL)

Schematic of the front panel for SG2020/SG3030 UL version, 2.

Schematic Diagram: Deck 1 (SG2020/SG3030)

Schematic of the deck mechanism for SG2020/SG3030, version 1.

Schematic Diagram: Deck 2 (SG2020/SG3030 UL)

Schematic of the deck mechanism for SG2020/SG3030 UL version, 2.

PCB Layouts

PCB Layout: Main Board 1 (SG2020)

Component placement diagram for the SG2020 main board 1.

PCB Layout: Main Board 2 (SG3030)

Component placement diagram for the SG3030 main board 2.

PCB Layout: Power Board 1 (SG2020)

Component placement diagram for the SG2020 power board 1.

PCB Layout: Power Board 2 (SG3030)

Component placement diagram for the SG3030 power board 2.

PCB Layout: Front Board

Component placement diagram for the front control board.

PCB Layout: Deck Board

Component placement diagram for the tape deck mechanism board.

SG2020 Parts List

Package Contents

List of packaged items included with the SG2020 unit.

Mechanical Parts List

List of mechanical components and their part numbers for SG2020.

Electrical Parts List

List of electrical components and their part numbers for SG2020.

SG3030 Parts List

Package Contents (SG3030)

List of packaged items included with the SG3030 unit.

Mechanical Parts List (SG3030)

List of mechanical components and their part numbers for SG3030.

Electrical Parts List (SG3030)

List of electrical components and their part numbers for SG3030.

Exploded Views

Exploded View: Cabinet (SG2020)

Diagram showing the assembly of the SG2020 cabinet components.

Exploded View: Cabinet (SG3030)

Diagram showing the assembly of the SG3030 cabinet components.

Exploded View: Speaker (SG2020)

Diagram illustrating the assembly of the SG2020 speaker unit.

Exploded View: Speaker (SG3030)

Diagram illustrating the assembly of the SG3030 speaker unit.

Exploded View: Deck Mechanism

Diagram showing the assembly of the tape deck mechanism.

Exploded View: CD Deck Mechanism

Diagram showing the assembly of the CD deck mechanism.

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