Yamaha Disklavier E3 Series Handbuch

E3 Series

MAINTENANCE HANDBOOK

Upright Piano

Grand Piano

Introduction

This booklet is the service manual for the E3 Series Disklavier sold from 2009.

The E3 Series offers improved operation via its control unit’s simple panel design and

superior soft playback, which is made possible through feedback control for full key

stroke motion during playback in conjunction with the key sensors.

Basic operation is possible with the control panel, however the remote control should be

used for regular operation. The unit features an organic light emitting display that offers

large text display for enhanced visibility.

The unit also features 128 MB of built-in flash memory. A floppy disk drive, which was

standard on previous models, is sold separately (UD-FD01).A USB port allows use of

external memory such as USB flash memory, hard disk, etc., besides the optional floppy

disk drive.

An IDC function, which has been available since the introduction of the MK IV, allows

playback of Disklavier Radio, software updates, etc.

Since the focus of this manual is mainly on service information, please refer to the

Owner’s Manual, provided separately, for other information regarding subjects such as

handling, etc. Also, we have tried as much as possible to provide a common approach to

service and procedures however, for those sections in which information is insufficient,

please refer to past product manuals.

Contents

Introduction

1. Part Names……………………………………..

2. Unit Configuration and Operation………….

3. Checking Functions……………………………

4. Tips on Tuning and Voicing the Piano…….

5. Adjusting the Units…………………………..

6. CTRL Test Menu………………………………

7. Service Center Mode Menu…………………..

8. Trouble Shooting/Points to Check……………

9. Parts List…………………………………………

1. Part Names

■Control Unit—Front Panel

■Control Unit—Rear Panel

■Remote Control

①[ON/OFF] button

②USB port

③Remote control sensor

④CD drive

①USB TO DEVICE port

②LAN port

③OUTPUT jacks

④ANALOG MIDI IN jacks

①[ON/STANDBY] button

②Number keypad

③[SYSTEM] button

④[VOICE] button

⑤[RECORD] button

⑥[PLAY] button

⑦[REVERSE]/[FORWARD] buttons

⑧Cursorbuttons

⑨[BACK] button

⑩[VOLUME]button

⑪[TEMPO]button

⑫[TRANSPOSE]buttons

⑬[INTERNET]button

⑭[SEARCH] button

⑤CD eject button

⑥[PLAY/PAUSE] button

⑦[STOP] button

⑧[RECORD] button

⑨[SELECT] button

⑩Cursor/[ENTER] buttons

⑪Display

⑫Dial

⑮[SETUP] button

⑯[METRONOME] button

⑰[REPEAT] button

⑱[A-B] button

⑲[PART SELECT] buttons

⑳[PAUSE] button

○

21 [STOP] button

○

22 [ENTER] button

○

23 [FUNC.] button

○

24 [SELECT] button

○

25 [+/YES]/[-/NO] buttons

○

26 [BALANCE] button

○

27 Color buttons

⑨USB TO HOST port

⑩MIDI OUT terminal

⑪MIDI IN terminal

⑤OMNI(SYNC) OUT jacks

⑥OMNI(SYNC) IN jacks

⑦TO PIANO connectors

⑧DC-IN 12V connector

①

④

⑤

⑩

⑧

③

②

⑦

⑥

⑧

①

⑩

⑨

⑦

⑪

⑤

③

②

⑥

⑫

2. Unit Configuration and Operation

・ Unit Layout

Grand Piano

Right Side View Bottom Side View

GB1KDKV has not the unit number⑤,⑧,⑨,and ⑩in the above illustration.

Upright Piano

①Control Unit

②CSP Unit

③Key Drive Unit

④Key Sensor Unit

⑤Hammer Sensor Unit

⑥Shank Stop Unit

⑦Control Box Unit

⑧Pedal Drive Unit

⑨PS (Power Supply) Unit

⑩Outlet Box

⑪MD Unit

⑦

①

④

⑩

⑨

⑤

①Control Unit

②CSP Unit

③Key Drive Unit

④Key Sensor Unit

⑤Hammer Sensor Unit

⑥Speaker Box

⑦Pedal Drive Unit

⑧Switch Box Unit

⑨MD Unit

⑩Shank Stop Unit

⑪PS Unit

②

③

①

⑪

⑥

⑧

1. Control Unit (DKC-800)

Control Unit, without top cover

The control unit manages all operations

including those operated by the remote

control.

Information is also provided in the display

according to the particular operation. The

control unit sends and receives record and

playback data with the CSP unit and

stores performance data in the internal

Flash memory (128MB).

The unit also controls the CD drive and

manages data from the IN/OUT terminals

of external memory devices (USB drive),

MIDI connections, LAN connections, and

computer connected to the device.

The control unit’s parts and their major

functions are listed below.

・CTRL(Control) Sheet : The control unit’s

main board, controls display and TO

HOST

・MC (Media Control) Sheet :Controls internet communications

and the USB ports (front, rear)

・APE(Audio Process Card for E3) Sheet : Controls Ensemble

tone generator, CD audio processing

・USB Sheet : Made up of power switch, front USB port,

remotecontrolsensor

・CD drive unit with EXG(exchange) Sheet : CDEXG Sheet

converts CD control signals

・Panel Sheet with EL Display : Assorted buttons and indicators

・ENCD(Encoder) Sheet : Rotary encoder

・JACK Sheet : MIDI terminals, analog input/output jacks

・REG (Regulator) Sheet : Converts voltage supplied by the PS unit

12V to 3.3V, 5V, 1.2V, ±9V

With CD drive unit Removed

2. CSP(Central Signal Processor) Unit CSP unit, removed from key drive unit(GP)

The CSP Unit is located under the high

transmits playback data from the control

unit to the drive unit. It also processes data

received via the sensor unit and then

transmits it as performance data to the

control unit. In other words, it functions as

a driver for the control unit and piano, and

a relay for the sensor unit.

The CSP unit’s parts and their major functions are listed below.

・CSP Sheet : Relays playback data

Control unit (MIDI) Drive unit (PWM)

Relaysrecorddata

Sensorunit(detectsandconvertstoADdata)Control unit (MIDI)

Drive unit playback table management

Memory tables created with measurements from the service center

mode

3. Drive Unit

The drive unit consists of the key drive unit that drives the keyboard, and pedal drive

unit that drives the pedals (damper/shift). In regard to keyboard drive, feedback control

for both downward and upward key motion allows sequential control of the position

and time (speed) of the keys in conjunction with the key sensor, which is described later.

The pedal drive unit also has a sensor section cover inside of the unit that manages

feedback control of the full pedal stroke just as

with the keyboard.

The key drive unit’s parts and function are

listed below.

・EKD1 Sheet : drives key number from 57 to 88

・EKD2 Sheet : drives key number from 47 to 56

・EKD3 Sheet : drives key number from 15 to 46

・EKD4 Sheet : drives key number from 1 to 14

- 5 -

Key drive unit, without bottom cover(GP)

The CSP unit converts MIDI playback data from the

control unit to PWM data for the key drive (or pedal

drive) unit, and relays it on to the drive sheet in the

key drive unit. The FET drives the key solenoids.

(Also the pedal solenoids are driven by FET.) Two

temperature sensors for thermal protection are

installed on the pedal drive unit and one sensor is on

key drive unit, and activate when the unit reaches

120ºC (key drive unit : 100℃). Corresponding PWM

output to the pedal drive is stopped when excessive

temperature activates the sensor.

Turning the power OFF and letting the temperature decrease will restore operation.

Also, individual poly switches installed on the keyboard and pedal drive FET circuits

shut down the circuits when excessive current is detected. (The switch resets when

there is no power surge present.)

4. Sensor Unit

The sensor unit consists of the key and the hammer sensor (DGB1K has only key

sensor), which detects key and hammer movement during performance, and the pedal

sensor, which detects pedal movement (damper, shift, sostenuto).

4-1. The key sensor consists of the key sensor sheet,

optic fiber, light source/receiver. Key

movement causes the acrylic shutter attached

to the underside of each key to break the LED

light beam as it passes from the optic fiber to

the sensor head.

The key shutter is printed with a gradation,

which goes from solid (black) in its upper

portion to thin (transparent) in the lower, that

changes the amount of light received by the

optical sensor as keyboard movement causes

the shutter to break the beam of light. The

level of transparency decreases as the keys are

depressed.

This is how key movement is detected.

The key sensors also function with key feedback control during automatic playback.

- 6 -

Pedal drive unit, without cover(GP)

Position of the key shutter and the sensor

KEY OFF

KEY ON

4-2. Key Sensor Measurement

Measurements are taken to normalize the positions between the keys (key shutter)

and sensors, and detect values, which differ according to the light source/receiver

conditions of each sensor. The measured values are saved in the CSP unit.

The rest position and end position are measured with key sensor measurement.

The rest position : normal key position

The end position : fully depressed key position

Allocatedintofourstages.

•Normalposition

Fullydepressedposition K1 : 2.7mm K2 : 4.5mm

K3 : 6.3mm K4 : 8.1mm

• After the key sensor value is measured, its rest position is re-measured and updated

while the power is on.

4-3. Pedal Sensor Unit

The pedal sensor is incorporated into the pedal drive

sheet and consists of the light source/receiver element

photo interrupter and the pedal shutter attached to

the pedal rod. The method used for detecting pedal

movement is similar to the key sensor described

earlier. Pedal movement causes the shutter to move

up and down changing the amount of light detected

by the sensor as the pedal moves. The pedal sensor

manages the detection of pedal performance data

while recording and feedback control during

automatic playback.

4-4. Pedal Measurement

Pedal measurement in the Service Center mode, which is described later, measures

pedal drive and position detection (sensor), or what is termed the relationship

between force placed on the drive unit and the resulting pedal position. The

measured data is saved in the CSP unit and used for damper and soft pedal

operation.

Pedal sensor

ＭＤ Unit

4-5. Hammer Sensor Unit Upright Piano Hammer Sensor Unit

The hammer sensor consists of the hammer

sensor sheet, optic fiber, light source/receiver.

Hammer movement causes the metal shutter

attached to the hammer shank of each key to

break the LED light beam as it passes from the

optic fiber to the sensor head.

5. MD Unit

When the silent pedal (GP: quiet switch) is operated,

the MD unit receives the driving data of the shank

stopper as below rout.

■MD driving data flow

Upright Piano

Grand Piano

6. PS (Power) Unit

The power unit supplies each unit with its required power.

The power cord for the powered speaker can be connected to the AC outlet. On the E3

power unit, protection circuits operate and shut down the power when excessive

current is detected in the drive, however in the PS unit, which was described in drive

unit section, individual poly switches function when excessive current is detected so

electric current is not switched off.

+48V Power for drive circuits

+12V Supplies each unit with power, and converts power within unit.

+5V For standby circuit

In quiet mode, the switch box outputs the piano sound to headphones as below.

Headphones

Silent Pedal(SW) Pedal Drive Board

Key Drive Board

CSPBoard

MDUnit

Control Unit

Shank Stopper

Quiet switch PS unit（D-ＳUB）CSP

MDControl unit

Switch BOX

Key sensor board CSP board

Control unit PS(Digital Audio)

Control Unit PS(D/A) Switch BOX

Shank Stopper

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