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Yamaha Portable Grand YPG-635 User Manual

Yamaha Portable Grand YPG-635
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SERVICE MANUAL
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved.
’08.04
CL 001802
CONTENTS(目次)
SPECIFICATIONS(総合仕様.............................................. 3/4
BLOCK DIAGRAM(ブロックダイアグラム)........................... 5
PANEL LAYOUT(パネルレイアウト)................................... 6/8
CIRCUIT BOARD LAYOUT & WIRING
(ユニットレイアウト&結線図)........................................... 10
DISASSEMBLY PROCEDURE(分解手順)............................ 12
LSI PIN DESCRIPTION(LSI 端子機能表)............................. 23
IC BLOCK DIAGRAM (IC ブロック図)................................. 27
CIRCUIT BOARDS(シート基板図)...................................... 28
TEST PROGRAM(テストプログラム)............................ 39/43
INITIALIZATION(初期化)................................................. 48/49
USER DATA BACKUP(ユーザーデータのバックアップ)
.... 50/55
MIDI IMPLEMENTATION CHART
(MIDI インプリメンテーションチャート)............................ 60
MIDI DATA FORMAT ............................................................... 61
PARTS LIST
OVERALL CIRCUIT DIAGRAM(総回路図
DIGITAL PIANO
DGX-630 YPG-635
As for an optional LP-7 pedal unit,
refer to the LP-7 service manual
(CL 001803 ).
オプションの PedalUnitLP-7 は、
サービスマニュアルCL001803
をご覧下さい。

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Yamaha Portable Grand YPG-635 Specifications

General IconGeneral
Keyboard88 keys, Graded Hammer Standard (GHS) keyboard
Preset Songs30
Amplifiers6W + 6W
Touch SensitivityHard/Medium/Soft/Fixed
Styles160
FingeringMulti Finger, Full Keyboard
Style ControlIntro, Main x 2, Fill-in, Ending
Music Database305
One Touch Setting (OTS)Yes
Data Capacity (Recording)Approx. 30, 000 notes
Compatible Data Format (Playback)SMF
Recording FunctionYes
MetronomeYes
Tempo Range32 - 280
Transpose-12 to 0, 0 to +12
USB to HostYes
HeadphonesYes
Voices500 voices (including 12 drum/SFX kits)
Display320 x 240 dots LCD
Speakers12cm x 2
Featured VoicesLive! Grand Piano
EffectsReverb, Chorus, DSP
Songs (Recording)5 Songs
Compatible Data Format (Recording)SMF
Tuning414.8 ~ 440.0 ~ 446.8 Hz
Power SupplyPA-150 or an equivalent recommended by Yamaha
ConnectivityUSB TO HOST
Included AccessoriesMusic Rest
Polyphony64 notes

Summary

Important Notices and Safety Precautions

General Service and Safety Warnings

Service requirements, static discharge, chemical, and safety precautions.

Specifications

Keyboards, Display, and Panel Controls

Details on keys, display, panel layout, and controls.

Voice, Style, and Function Features

Specifications for voices, styles, database, functions, and effects.

Song, MIDI, and Connectivity Specifications

Details on songs, MIDI, connectivity, dimensions, and accessories.

Block Diagram

System Block Diagram Overview

Diagram showing major internal components and their interconnections.

Panel Layout

Front Panel Control Identification

Description and numbering of all front panel buttons and controls.

Rear Panel and Connectivity

Rear Panel Connectors and Ports

Description of rear panel ports for power, USB, audio, and pedals.

Circuit Board Layout and Wiring

Circuit Board Layout Diagrams

Visual representation of circuit board placement in different assemblies.

Disassembly Procedures

Lower Case Assembly Disassembly

Step-by-step guide to removing the lower case assembly.

Specific Circuit Board Disassembly

Detailed steps for removing various circuit boards.

Keyboard Assembly and Key Mechanism Disassembly

Disassembly of keyboard assembly and its key mechanisms.

LSI Pin Description

CPU (MKS) LSI Pinout

Detailed pin description for the UPD789022GB-A15-8E CPU.

LCD Controller LSI Pinout

Detailed pin description for the S1D13700F01A100 LCD controller.

IC Block Diagram

Logic, Power, and Amplifier IC Block Diagrams

Block diagrams for logic gates, power switches, converters, and amplifiers.

Test Program

Test Program Preparation and Entry

Required equipment, setup, and procedure to enter diagnostic mode.

Test Program List and Navigation

Steps to select, execute, and interpret diagnostic test results.

Initialization Procedures

Backup Clear and Flash Clear Functions

Procedures for resetting settings and clearing user data.

User Data Backup

Connecting and Managing USB Flash Memory

Steps for connecting USB memory and accessing file operations.

MIDI Implementation Chart

MIDI Transmit and Recognize Capabilities

Details on MIDI messages transmitted and recognized by the instrument.

MIDI Data Format

MIDI Data Format Specifications

Format details for MIDI messages, control changes, and system exclusives.

Overall Assembly Diagram

Upper and Lower Case Assembly Components

Diagram and part numbers for upper and lower case assemblies.

Keyboard and Stand Assembly Components

Diagram and part numbers for keyboard, wheel, and stand components.

Overall Circuit Diagram (Part 1)

Main Component Circuitry Diagrams

Circuit diagrams for AM, DJACK, DM, MVR, PB, PJK, PSW, TW components.

Power, CPU, and Memory Circuitry

Diagrams for power supply, CPU, and memory interfaces.

Overall Circuit Diagram (Part 2)

Keyboard and Control Panel Circuitry

Circuit diagrams for ENC, GHL, PNL, PNR components.

Keyboard Assembly Signal Flow

Diagram illustrating signal paths within the keyboard assembly.

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