Yamaha PSR-170 User Manual

SERVICE MANUAL
■ CONTENTS
SPECIFICATIONS.............................................................................. 3
PANEL LAYOUT ................................................................................. 4
BLOCK DIAGRAM ............................................................................. 5
CIRCUIT BOARD LAYOUT & WIRING .............................................. 6
DISASSEMBLY PROCEDURE .......................................................... 7
LSI PIN DESCRIPTION ................................................................... 10
IC BLOCK DIAGRAM....................................................................... 11
CIRCUIT BOARDS .......................................................................... 12
TEST PROGRAM ............................................................................ 15
MIDI IMPLEMENTATION CHART .................................................... 17
OVERALL CIRCUIT DIAGRAM
PARTS LIST
This document is printed on chlorine free (ECF) paper with soy ink.
1.412K-355 Printed in Japan ’01.05
PK 001652

Yamaha PSR-170 Specifications

General

Type	Portable Keyboard
Keyboard	61 keys
Effects	Reverb, Chorus
Polyphony	32 notes
ROM	100 voices
Display	LCD
Presets	100 styles
Connections	Headphones
Power Supply	AC adapter or batteries