PSR-A300
1
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K556
’05.07
SERVICE MANUAL
HAMAMATSU, JAPAN
CONTENTS
SPECIFICATIONS .................................................................3
PANEL LAYOUT ..................................................................4
CIRCUIT BOARD LAYOUT & WIRING ................................5
BLOCK DIAGRAM ................................................................6
DISASSEMBLY PROCEDURE .............................................7
LSI PIN DESCRIPTION....................................................... 12
IC BLOCK DIAGRAM .........................................................14
CIRCUIT BOARDS ..............................................................15
TEST PROGRAM ...............................................................21
BACKUP & INITIALIZATION .............................................24
TRANSFERRING DATA BETWEEN
THE PSR-A300 and a COMPUTER ...................................25
MIDI IMPLEMENTATION CHART .....................................27
MIDI DATA FORMAT .........................................................28
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PK
001738