Roland G-70 Service Notes

G-70
Feb.2005
SERVICE NOTES
Issued by RES
Second edition
SPECIFICATIONS 2/3
DISASSEMBLY 4
LOCATION OF CONTROLS 6
EXPLODED VIEW (TOP) 8
EXPLODED VIEW (BOTTOM) 10
KEYBOARD PARTS LIST 12
PARTS LIST 14/18
WIRING DIAGRAM 20
INFORMATION UPDATING MUSICAL DATA/OPERATIVE SYSTEM 22
UPDATING OF MUSICAL DATA 23
FACTORY RESET 25
UPDATING OF THE OPERATIVE SYSTEM 26
CHECK THE SOFTWARE VERSION 29
TEST MODE 29
BENDER CALIBRATION 45
TOUCH SCREEN CALIBRATION 46
BLOCK DIAGRAM 48
CIRCUIT BOARD (MAIN) 50
CIRCUIT DIAGRAM (MAIN 1/14) 52
CIRCUIT DIAGRAM (MAIN 2/14) 54
CIRCUIT DIAGRAM (MAIN 3/14) 56
CIRCUIT DIAGRAM (MAIN 4/14) 58
CIRCUIT DIAGRAM (MAIN 5/14) 60
CIRCUIT DIAGRAM (MAIN 6/14) 62
CIRCUIT DIAGRAM (MAIN 7/14) 63
CIRCUIT DIAGRAM (MAIN 8/14) 64
CIRCUIT DIAGRAM (MAIN 9/14) 66
CIRCUIT DIAGRAM (MAIN 10/14) 68
CIRCUIT DIAGRAM (MAIN 11/14) 70
CIRCUIT DIAGRAM (MAIN 12/14) 72
CIRCUIT DIAGRAM (MAIN 13/14) 74
CIRCUIT DIAGRAM (MAIN 14/14) 76
CIRCUIT BOARD (AUDIO) 78
CIRCUIT DIAGRAM (AUDIO 1/4) 80
CIRCUIT DIAGRAM (AUDIO 2/4) 82
CIRCUIT DIAGRAM (AUDIO 3/4) 83
CIRCUIT DIAGRAM (AUDIO 4/4) 84
CIRCUIT BOARD (HARMONY) 86
CIRCUIT DIAGRAM (HARMONY 1/2) 88
CIRCUIT DIAGRAM (HARMONY 2/2) 90
CIRCUIT BOARD & CIRCUIT DIAGRAM (INVERTER) 92
CIRCUIT BOARD (MIDI) 92
CIRCUIT DIAGRAM (MIDI) 94
CIRCUIT BOARD & CIRCUIT DIAGRAM (LCD CONTROL) 96
CIRCUIT BOARD (RIGHT CONTROL) 98
CIRCUIT DIAGRAM (RIGHT CONTROL 1/4) 100
CIRCUIT DIAGRAM (RIGHT CONTROL 2/4) 102
CIRCUIT DIAGRAM (RIGHT CONTROL 3/4) 104
CIRCUIT DIAGRAM (RIGHT CONTROL 4/4) 106
CIRCUIT BOARD & CIRCUIT DIAGRAM (RIGHT CONTROL LCD) 108
CIRCUIT BOARD & CIRCUIT DIAGRAM (LEFT CONTROL LCD) 109
CIRCUIT BOARD (LEFT CONTROL) 110
CIRCUIT DIAGRAM (LEFT CONTROL 1/6) 112
CIRCUIT DIAGRAM (LEFT CONTROL 2/6) 114
CIRCUIT DIAGRAM (LEFT CONTROL 3/6) 116
CIRCUIT DIAGRAM (LEFT CONTROL 4/6) 118
CIRCUIT DIAGRAM (LEFT CONTROL 5/6) 120
CIRCUIT DIAGRAM (LEFT CONTROL 6/6) 122
CIRCUIT BOARD & CIRCUIT DIAGRAM (HARMONIC BAR) 124
CIRCUIT BOARD & CIRCUIT DIAGRAM (POWER) 126
CIRCUIT BOARD & CIRCUIT DIAGRAM (SRX) 128
CIRCUIT BOARD & CIRCUIT DIAGRAM (PHONES) 130
CIRCUIT BOARD & CIRCUIT DIAGRAM (ENCODER) 130
CIRCUIT BOARD & CIRCUIT DIAGRAM (D-BEAM) 130
CIRCUIT BOARD (CONTACT) 132
CIRCUIT DIAGRAM (CONTACT) 134
SN00081 K6018563 Printed in Italy
TABLE OF CONTENTS
Copyright © 2005 by ROLAND CORPORATION
All rights reserved. No parts of this publication may be reproduced in any form whithout the written permission of
ROLAND CORPORATION.

Roland G-70 Specifications

General

Type	Arranger Workstation
Number of Keys	76
Keyboard Features	Velocity-sensitive, Aftertouch
Display	Color LCD
Polyphony	128 voices
Effects	Reverb, Chorus
Sequencer	16-track
Connectors	MIDI