Roland Juno-GJ User Manual

SERVICE NOTES
Issued by RJA
Copyright © 2006 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of ROLAND CORPORATION.
Printed in Japan (0500) (SC-KWS)17058414E0
Apr. 2006 JUNO-G/JUNO-G (J)
Table of Contents
Cautionary Notes ..............................................................2
Specifications .....................................................................2
Location of Controls/Location of Controls Parts List .4
Exploded View (1).............................................................6
Exploded View (1) Parts List...........................................7
Exploded View (2).............................................................8
Exploded View (2) Parts List...........................................9
Keyboard Parts List.........................................................10
Parts List ...........................................................................11
Wiring Diagram...............................................................14
Checking Version Number ............................................15
Data Save (User Backup)................................................15
Data Load (User Restore)...............................................16
Factory Reset....................................................................16
System Update.................................................................16
Test Mode.........................................................................17
Block Diagram .................................................................23
Circuit Board (MAIN Board: 1/2).................................24
Circuit Board (MAIN Board: 2/2).................................25
Circuit Board (JACK, PANEL-C, LCD Board: 1/2)....26
Circuit Board (JACK, PANEL-C, LCD Board: 2/2)....27
Circuit Board (PANEL-A, B Board)..............................28
Circuit Diagram (MAIN Board: 1/4)............................30
Circuit Diagram (MAIN Board: 2/4)............................32
Circuit Diagram (MAIN Board: 3/4)............................34
Circuit Diagram (MAIN Board: 4/4)............................36
Circuit Diagram (JACK Board: 1/2) .............................38
Circuit Diagram (JACK Board: 2/2) .............................40
Circuit Diagram (PANEL-A Board) .............................42
Circuit Diagram (PANEL-B Board) ..............................44
Circuit Diagram (PANEL-C Board: 1/2) .....................46
Circuit Diagram (PANEL-C Board: 2/2) .....................48
Error Messages ................................................................50

Roland Juno-GJ Specifications

General

Brand	Roland
Model	Juno-GJ
Category	Synthesizer
Language	English

Summary

Cautionary Notes

User Data Status and Handling

Details user data status after various processes and notes on parts supply.

Circuit Diagram Conventions

Explains 'NIU' abbreviation and silkscreened components in circuit diagrams.

Specifications

Keyboard, Sound Generator, Wave Memory

Details keyboard type, polyphony, wave memory, and preset memory.

User Memory, Effects, Song Recorder, MIDI

Specs for user memory, effects, song recorder, tempo, and MIDI track.

Audio Track, Dimensions, Weight

Details audio track format, sample rate, recording time, and physical dimensions.

Accessories, Options, Controllers, Display

Lists accessories, options, controllers, and LCD display details.

Storage, Connectors, Power

Details external storage, connectors, and power supply requirements.

Control Location and Parts Identification

Control Location Diagram

Diagram showing numbered controls on the JUNO-G front panel.

Control Parts List

List of parts corresponding to numbered controls on the JUNO-G.

Exploded Views

Exploded View (1) Assembly Diagram

Diagram illustrating the internal assembly of the JUNO-G.

Exploded View (1) Parts List

Detailed list of parts shown in Exploded View (1).

Exploded View (2) Assembly Diagrams

Diagrams showing different views of the JUNO-G assembly.

Exploded View (2) Parts List

Detailed list of parts shown in Exploded View (2).

Keyboard and General Parts Lists

Keyboard Assembly Diagram and Parts

Diagram and list of individual parts for the JUNO-G keyboard.

Comprehensive Parts List Categories

Lists parts categorized by casing, chassis, knobs, buttons, switches, and jacks.

Assembly Units and Component Parts

Lists assembly units like keyboards, PWBs, diodes, and other components.

Connectors, Wiring, and Packing Parts

Lists potentiometers, encoders, connectors, wiring, screws, and packing materials.

Miscellaneous and Accessories Lists

Lists miscellaneous items and standard accessories for the JUNO-G.

Wiring Diagram

JUNO-G Internal Wiring Connections

Diagram illustrating internal wiring between JUNO-G boards.

System Operations and Maintenance

Checking System Version Number

Procedure to check the JUNO-G system program version.

User Data Backup Procedure

Steps to save user data to a memory card.

User Data Restore Procedure

Procedure to load user data from a memory card.

Factory Reset Procedure

Steps to reset the JUNO-G to factory default settings.

System Update Procedure

Instructions for updating the JUNO-G system software.

Troubleshooting Update Issues

Guidance for resolving problems during a system update.

Test Mode Operations

Test Mode Entry and Navigation

Instructions on how to enter test mode and general navigation.

Test Mode Overview and Selection

Explains test items, selection, skipping, and general navigation.

Test Items: Version, Device, DIMM, Expansion Board

Details procedures for checking version, device, DIMM, and Expansion Board.

Test Items: Card, Encoder, Switches, LCD

Procedures for testing card interface, encoders, switches, and LCD.

Test Items: AD, Mute, MIDI, Sound

Tests for AD controls, mute circuit, MIDI, and audio I/O.

Test Items: Sound (Line/Mic), USB

Tests for audio inputs/outputs and USB connectivity.

Test Items: D Beam, Keyboard, Noise, Factory Reset

Tests for D Beam, keyboard, noise levels, and factory reset execution.

Circuit Board Layout Diagrams

MAIN Board Layout (1/2)

Component layout diagram for the JUNO-G MAIN Board.

MAIN Board Layout (2/2)

Component layout diagram for the JUNO-G MAIN Board.

JACK, PANEL-C, LCD Board Layout (1/2)

Component layout diagram for the JACK, PANEL-C, LCD Board.

JACK, PANEL-C, LCD Board Layout (2/2)

Component layout diagram for the JACK, PANEL-C, LCD Board.

PANEL-A, B Board Layout

Component layout diagram for the PANEL-A and PANEL-B boards.

Circuit Diagrams

MAIN Board Circuit Diagram (1/4)

Schematic for the JUNO-G MAIN Board, section 1 of 4.

MAIN Board Circuit Diagram (2/4)

Schematic for the JUNO-G MAIN Board, section 2 of 4.

MAIN Board Circuit Diagram (3/4)

Schematic for the JUNO-G MAIN Board, section 3 of 4.

MAIN Board Circuit Diagram (4/4)

Schematic for the JUNO-G MAIN Board, section 4 of 4.

JACK Board Circuit Diagram (1/2)

Schematic for the JUNO-G JACK Board, section 1 of 2.

JACK Board Circuit Diagram (2/2)

Schematic for the JUNO-G JACK Board, section 2 of 2.

PANEL-A Board Circuit Diagram

Schematic for the JUNO-G PANEL-A Board.

PANEL-B Board Circuit Diagram

Schematic for the JUNO-G PANEL-B Board.

PANEL-C Board Circuit Diagram (1/2)

Schematic for the JUNO-G PANEL-C Board, section 1 of 2.

PANEL-C Board Circuit Diagram (2/2)

Schematic for the JUNO-G PANEL-C Board, section 2 of 2.

Memo

General Notes Section

Blank space intended for user notes and memos.

Error Messages and Solutions

Common Operation Error Messages

Details common error messages and their meanings.

Error Message Handling Actions

Provides actions to resolve common error messages.

Data and File Error Messages

Details errors related to data, files, and memory.