Yamaha PortaTone PSR-260 Manual de serviço
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This document is printed on chlorine free (ECF) paper with soy ink.
PK 001638
SERVICE MANUAL
CONTENTS
SPECIFICATIONS ........................................................................................ 3
PANEL LAYOUT ............................................................................................ 4
CIRCUIT BOARD LAYOUT & WIRING ..................................................... 5
BLOCK DIAGRAM ........................................................................................ 6
DISASSEMBLY PROCEDURE ................................................................... 7
CIRCUIT BOARDS ..................................................................................... 10
LSI PIN DISCRIPTION .............................................................................. 14
IC BLOCK DIAGRAM ................................................................................ 14
TEST PROGRAM & INITIALIZE .............................................................. 15
MIDI IMPLEMENTATION CHART ............................................................ 17
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PSR-260
PSR-262
HAMAMATSU, JAPAN
1.43K-317 I.T
Printed in Japan 2000. 05