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Yamaha disklavier DKC55 User Manual

Yamaha disklavier DKC55
50 pages
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Grand Piano
Mark III Series
MAINTENANCE HANDBOOK
FOR THE PIANO TECHNICIAN
MHB18
00.06 CR Printed in Japan
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Yamaha disklavier DKC55 Specifications

General IconGeneral
BrandYamaha
Modeldisklavier DKC55
CategoryMusical Instrument
LanguageEnglish

Summary

Basic Structure and Model Breakdown

DGA1 (Playback-Only Model) Details

Details the DGA1 model, including its controller, memory, solenoids, and speakers.

DGP1 (Playback-Only Model) Details

Details the DGP1 model, noting its similarities and differences from the DGA1.

Full-Function Models (DGH1BA, DA1A, DC1A, DC2A)

Covers the components of full-function models like DGH1BA, DA1A, DC1A, and DC2A.

Full-Function Models (DC3A, DC5A, DC6A, DC7A)

Lists the additions for DC3A, DC5A, DC6A, and DC7A full-function models.

DKC55 Control Unit Front Panel Operations

DKC55RCD Control Unit Front Panel Operations

Silent Control Box Functions

Silent System Activation and Indicators

Explains how to engage the Silent system and its indicator light.

New Functions Introduced in Mark III Series

CD-ROM Drive Functionality

Explains the function and capabilities of the CD-ROM drive for expanded playback.

Expanded Memory and Program Features

Details expanded memory and new program functions like Chain Play and Timer Play.

SmartKey System for Melody Learning

Describes the SmartKey System for learning melodies without reading music.

New Units in the Mark III Series

New Compact Controller Unit

Details the new compact controller unit (DKC55/DKC55RCD) and its calendar function.

New Key Sensor Technology

Explains the single-beam continuous-position optical key sensor and its calibration function.

New Key Drive Unit and Amplifier

Details the key drive unit's solenoids and the amplifier unit's functions.

New Shank Stopper Mechanism

Explains the motor-driven silent mechanism's shank stopper.

Disklavier Unit Diagram and Model Notes

System Unit Interconnections

Provides a block diagram illustrating the connections between various Disklavier units.

Disklavier Operation Procedures

Volume Control and Balancing

Covers adjusting volume and balancing ensemble and CD audio levels.

Ensemble Volume (TG Master Balance)

Details balancing the XG tone generator volume with the piano sound.

CD Volume Balancing (CD Master Balance)

Balancing CD Audio with Piano Sound

Guides on balancing CD audio volume with the piano sound output.

General Maintenance Approach

Basic Maintenance Strategy

Outlines the general approach to maintaining the Disklavier's acoustic, silent, and electrical systems.

Acoustic Adjustment Procedure

Details the procedure for acoustic adjustment and safe action removal.

Silent-Mode Adjustment Procedures

Explains adjustments related to the silent mode mechanism and action regulation.

Regulating Rods and Disklavier Reset Procedures

Adjusting Regulating Rods for Silent Mode

Provides instructions for adjusting regulating rods for proper silent mode operation.

Resetting Disklavier Settings and Memory

Explains how to reset settings, memory disks, or the entire Disklavier unit.

Forced Reset Procedure for Memory Disk Issues

Performing a Forced Reset

Describes how to perform a forced reset when memory disks are damaged.

Accessing Maintenance Mode (MENU)

Maintenance Mode Entry Point

Entry point for accessing the Disklavier's maintenance functions.

Test Mode Initiation

Accesses the playability check and various diagnostic test functions.

Keyboard Playability and Timing Tests

Keyboard Adjustment: Tone and Playback Data

Principles of Pedal Maintenance

Sustain Pedal Maintenance Procedures

Details maintenance steps for the sustain pedal, including adjustments and measurements.

Shift Pedal Maintenance Procedures

Details maintenance steps for the shift pedal, including adjustments and measurements.

Keyboard Measurement and Data Rewriting

Keyboard Timing Adjustment Procedure

Piano Tables Condition and Pass Number Checks

Keyboard Return Damping Adjustment

Comprehensive Disklavier Test Modes

Sensor Sheet Test Procedures

Control Sheet Test Procedures

PK-CTL Sheet Test Procedures

Sensor Sheet Component Test Procedures

Error History Display and Interpretation

Disklavier Program Update Procedures

Pass Numbers and Error Message Reference

Controller Board Error Messages

PK-CTL Board Protect Function Errors

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