Yamaha PSR-S950 Service Manual

HAMAMATSU, JAPAN
PK
001876
SERVICE MANUAL
Copyright (c) Yamaha Corporation. All rights reserved. PDF ’12.08
SPECIFICATIONS .......................................................3
PANEL LAYOUT ..........................................................5
CIRCUIT BOARD LAYOUT & WIRING ........................8
DISASSEMBLY PROCEDURE ..................................12
LSI PIN DESCRIPTION .............................................22
CIRCUIT BOARDS ....................................................39
PSR-S750 TEST PROGRAM ....................................56
PSR-S950 TEST PROGRAM ....................................63
PSR-S750 SYSTEM BOOTING FLOWCHART .........71
PSR-S950 SYSTEM BOOTING FLOWCHART .........73
PSR-S750 DM CIRCUIT BOARD CHECK METHOD ........75
PSR-S950 DM CIRCUIT BOARD CHECK METHOD ........76
DATA BACKUP ............................................................. 77
SYSTEM RESET ..........................................................78
PARTS LIST
BLOCK DIAGRAM
OVERALL CIRCUIT DIAGRAM
CONTENTS
',*,7$/:25.67$7,21
PSR-S750
PSR-S950

Yamaha PSR-S950 Specifications

General

Polyphony	128
Styles	408
One Touch Setting (OTS)	4 for each Style
Amplifiers	15 W x 2
Featured Voices	Super Articulation Voices, Mega Voices
Featured Styles	MegaVoices, Session Styles
Recording Format	WAV
Internal Memory	6.7 MB
Effects	Reverb, Chorus, DSP, Master EQ
Speakers	13 cm + 5 cm (dome) x 2
Connectivity	USB TO DEVICE, USB TO HOST, MIDI In/Out
Power Supply	AC Adaptor (PA-300C)
Weight	11.5 kg
Keyboard Type	61 keys, touch-sensitive
Dimensions	1002 x 148 x 437 mm