SERVICE MANUAL
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. PDF ’06.04
PK 001761
CONTENTS
SPECIFICATIONS .................................................................... 3
PANEL LAYOUT........................................................................ 4
CIRCUIT BOARD LAYOUT & WIRING ..................................... 6
BLOCK DIAGRAM .................................................................... 8
DISASSEMBLY PROCEDURE ................................................. 9
LSI PIN DESCRIPTION .......................................................... 15
IC BLOCK DIAGRAM.............................................................. 18
CIRCUIT BOARDS ................................................................. 19
TEST PROGRAM ................................................................... 29
INITIALIZATION ...................................................................... 33
USER DATA BACKUP............................................................. 34
MIDI IMPLEMENTATION CHART ........................................... 35
MIDI DATA FORMAT ............................................................... 36
PARTS LIST
OVERALL CIRCUIT DIAGRAM
DGX-220
YPG-225
To Next Page
Need help?
General
