Yamaha PSR-S750 User 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
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PSR-S750
PSR-S950

Yamaha PSR-S750 Specifications

General

Keyboard	61 keys
Touch Response	Yes
Tone Generator	AWM Stereo Sampling
Polyphony	128
Accompaniment Styles	325
Music Finder	Yes
One Touch Setting (OTS)	4 for each Style
Song Recording	Yes
Number of Songs	5
Number of Tracks	16
USB Audio Recorder	Yes
Amplifiers	15W x 2
Speakers	13 cm x 2 + 5 cm x 2
Type	Arranger Workstation
Arpeggiator	Yes
Featured Voices	Live! Voices, Sweet! Voices, Cool! Voices
Compatibility	XG, GS
Effects	Reverb, Chorus, DSP, EQ
Featured Styles	Mega Voices
Fingering	Single Finger, Fingered, Multi Finger
Style Control	BREAK
Data Capacity	Approx. 300 KB
Playback	SMF, XF
Recording	SMF
Display	320 x 240 dots, QVGA 5.7 inch LCD
External Drives	USB Flash Memory
Connectivity	USB to Device, USB to Host, AUX IN, LINE OUT
Power Supply	PA-300C or an equivalent recommended by Yamaha
Dimensions	1002 x 148 x 437 mm

Summary

Specifications

Panel Layout and Controls

Rear Panel Connections

Details the various jacks and terminals located on the rear panel of the instrument.

Front Panel Controls

Identifies and describes the buttons, dials, and displays on the front panel.

Disassembly Procedures

Bottom Board Assembly Disassembly

Step-by-step instructions for removing the bottom board assembly.

HP Circuit Board Removal

Keyboard Assembly Disassembly

PSR-S750 Test Program

PSR-S950 Test Program

Tests Overview

Lists and describes various tests with judging conditions and expected results.

Parts List

Overall Assembly Parts

Keyboard Assembly Parts

Electrical Parts (PSR-S750)

Detailed list of electronic components for the PSR-S750 model.