Yamaha PORTATONE 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
www.freeservicemanuals.info
3/24/2019
Digitized in Heiloo the Netherlands
Not for sale!

Yamaha PORTATONE PSR-170 Specifications

General

Keyboard	61 keys
Voices	100
Styles	100
Songs	100
MIDI	Yes
Effects	Reverb, Chorus
Power Supply	PA-3B adapter or batteries
Display	LCD
Connections	DC IN
Weight	4.5 kg
Amplifier	2.5W x 2