Yamaha Disklavier DKC55RCD XG Mark III Service Manual

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Table of Contents

1
Contents
3
Protection of Eyes from Laser Beam During Servicing
5
Specifications
6
Function and Controls
7
Basic Structure
8
New Functions
8
CD-ROM Drive
8
Expanded Memory and Programs
8
Smartkey System
9
Unit Layout
11
Panel Layout
11
Front Panel
11
Rear Panel
12
Switch Box
12
Remote Controller
13
Amplifier Unit
14
Disassembly
24
LSI Pin Description
32
IC Block Diagram
36
Circuit Boards
50
Maintenance Mode (Menu)
51
Test Pattern Play and Check - Check Playability
53
Keyboard Adjustment
54
Sustain Pedal Measurement, Half Point Adjustment
55
Soft Pedal Measurement
56
Principles of Pedal Maintenance
57
Pedal Adjustment Procedure Label
59
Keyboard Measurement - Re-Writing of Table Data for Keyboard
60
Keyboard (Sound-Output) Timing Adjustment
61
Piano Tables Condition - Piano Tables Condition/Pass Number Check
62
Display EEP-ROM Data (on the PK-CTL Board)
62
Pedal Play/Rec Mode
63
Keyboard-Return Damping Adjustment
64
Test Mode
66
Control Sheet
67
PK-CTL Sheet
67
Error History
68
Sensor Sheet
69
Error Messages
70
Program Update
71
Pass Numbers and Error Messages
74
Troubleshooting
76
MIDI Implementation Chart
77
Overall Circuit Diagram
109
Block Diagram
111
Wiring Diagram
113
Parts List
114
Unit Comparison between Models
119
Overall Assembly Diagram
124
Amplifier Unit Diagram and Parts List
127
Hammer Sensor Unit
128
Control Unit Diagram and Parts List
131
Panel Unit Exploded View and Parts List
132
Key Drive Unit View and Parts List
134
Key Sensor Unit View and Parts List
135
MD Unit View and Parts List
136
Pedal Drive Unit Exploded View and Parts List
138
Switch Box Unit View and Parts List
139
Speaker Box Assembly View and Parts List
141
Electrical Parts List

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Yamaha Disklavier DKC55RCD XG Mark III Service Manual

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Table of Contents