YAMAHA
YDP-123
Digital piano
Owner's Manual

Before using the YDP-123, be sure to read "Precautions" on pages 6 to 7.

IMPORTANT
Check your power supply
Make sure that your local AC mains voltage matches the voltage specified on the name plate on the bottom panel. In some areas a voltage selector may be provided on the bottom panel of the main keyboard unit near the power cord. Make sure that the voltage selector is set for the voltage in your area. The voltage selector is set at 240V when the unit is initially shipped. To change the setting use a "minus" screwdriver to rotate the selector dial so that the correct voltage appears next to the pointer on the panel.


Introduction.

Thank you for purchasing the Yamaha YDP-123 Digital Piano! We recommend that you read this manual carefully so that you can fully take advantage of the advanced and convenient functions of the YDP-123.
We also recommend that you keep this manual in a safe and handy place for future reference.

About this Owner's Manual 
This manual consists of three main sections: "Introduction," "Reference" and "Appendix."

Introduction (page 2):
Please read this section first.
Reference (page 13):
This section explains how to make detailed settings for the YDP-123's various functions.
Appendix (page 33):
This section introduces reference material.

*	The illustrations of the controls in this owner's manual are for instructional purposes only and actual appearance of the controls may be somewhat different on your instrument.

COPYRIGHT NOTICE.
This product incorporates and bundles computer programs and contents in which Yamaha owns copyrights or with respect to which it has license to use others' copyrights. Such copyrighted materials include, without limitation, all computer software, MIDI files and WAVE data. Any unauthorized use of such programs and contents outside of personal use is not permitted under relevant laws. Any violation of copyright has legal consequences. DON'T MAKE, DISTRIBUTE OR USE ILLEGAL COPIES.

Trademarks:
Apple and Macintosh are trademarks of Apple Computer, Inc.
Windows is a registered trademark of Microsoft Corporation.
All other trademarks are the property of their respective holders.


Table of Contents.
Some lists, the score, and the index are not available.

Introduction
SPECIAL MESSAGE SECTION	2
About this Owner's Manual	3
Application Index	5
PRECAUTIONS	6
Accessories	8
Maintenance	8
Features	9
Before Using the YDP-123	10
	Key Cover	10
	Music Rest	10
	Turning the Power On	11
	Setting the Volume	11
	Using Headphones	12
Reference
Part Names	14
Listening to the Demo Songs	15
Listening to 50 Piano Preset Songs	16
Selecting & Playing Voices	17
	Selecting Voices	17
	Using the Pedals	17
	Adding Variations to the Sound - Reverb	18
	Combining Two Voices (Dual mode)	19
	Transposition	20
	Fine-tuning the Pitch	20
	Using the Metronome	21
About MIDI	23
Connecting a Personal Computer	24
MIDI Functions	26
	MIDI Transmit/Receive Channel Selection	26
	Local Control ON/OFF	26
	Program Change ON/OFF	27
	Control Change ON/OFF	27
Troubleshooting	28
Options	28
Keyboard Stand Assembly	29
Index	32
Appendix
MIDI Data Format / MIDI-Datenformat / Format des donnees MIDI / Formato de datos MIDI	34
MIDI Implementation Chart	38
Specifications / Technische Daten / Caracteristiques techniques / Especificaciones	39

Application Index
Use this index to find reference pages that may be helpful for your particular application and situation.
Listening
Listening to demo songs with different voices	"Listening to the Demo Songs" on page 15
Listening to songs from "50 Greats for the Piano"	"Listening to 50 Piano Preset Songs" on page 16
Playing
Using three pedals	"Using the Pedals" on page 17
Playing an accompaniment that matches pitch	"Transposition" on page 20
Fine-tuning the pitch of the entire instrument when you play the YDP-123 
along with other instruments or CD music	"Fine-tuning the Pitch" on page 20
Changing voices
Viewing the list of voices	 "Selecting Voices" on page 17
Simulating a concert hall	"Adding Variations to the Sound - Reverb" on page 18
Combining two voices	"Combining Two Voices (Dual mode)" on page 19
Practicing
Practicing with an accurate and steady tempo	"Using the Metronome" on page 21
Connecting the YDP-123 to other devices
What is MIDI?	"About MIDI" on page 23
Connecting the computer	"Connecting a Personal Computer" on page 24
Assembling
Assembling and disassembling the YDP-123	"Keyboard Stand Assembly" on pages 29 to 31



Accessories.
"50 Greats for the Piano" (Music Book)
Owner's Manual
This manual contains complete instructions for operating your YDP-123.
Quick Operation Guide
Bench
A bench may be included or optional, depending on your locale.

Maintenance.
Clean the instrument using a dry or slightly damp soft cloth (wring well).

CAUTION
Do not use benzene, thinner, detergent, or chemically-treated cloth for cleaning. Do not place vinyl, plastic or rubber products on the instrument.
Otherwise, the panel or keys may become discolored or degraded.

CAUTION
Before using the YDP-123, be sure to read "Precautions" on pages 6 to 7.

Tuning.
Unlike an acoustic piano, the YDP-123 does not need to be tuned. It always stays perfectly in tune.

Transporting.
If you move to another location, you can transport the YDP-123 along with your other belongings. You can move the unit as it is (assembled) or you can disassemble the unit before moving.
Transport the keyboard horizontally. Do not lean it up against a wall or stand it up on its side. Do not subject the instrument to excessive vibration or shock.



Features.
The Yamaha YDP-123 digital piano offers unmatched sonic realism and natural grand-piano type playability as well as Yamaha's original "AWM Stereo Sampling" tone-generation technology for rich, musical voices, and a special "Graded Hammer" keyboard that provides graded key weight and response throughout the keyboard range.
The Grand Piano 1 and 2 voices feature totally new samples painstakingly recorded from a full concert grand piano. The E. Piano 1 voice features a single velocity-switched sample (Dynamic Sampling) and E. Piano 2 voice features two velocity-switched sample.
The YDP-123 sounds much closer to a true acoustic piano.

[PHONES]
A set of standard stereo headphones can be plugged in here for private
practice (page 12).

MIDI [IN/OUT/THRU]
Connect a MIDI device to this connector to use various MIDI functions (pages 25-26). (About MIDI-page 23)

[PEDAL]
Connect the pedal cord here to use the YDP-123's pedals (page 30). 

[MASTER VOLUME]
Adjust the volume level using this control (page 11).

[DEMO]
Playback of a demo song and 50 preset songs is available (page 15). 

[METRONOME]
Control the metronome functions (page 21).

[VOICE]
Select voices from 10 internal sounds, including Grand Piano 1 and 2 (page 17). You can also combine two voices simultaneously (page 19), select various reverb effects (page 18), etc.


Before Using the YDP-123.

Key Cover.
To open the key cover:
Lift the cover slightly, then push and slide it open.
To close the key cover:
Slide the cover toward you and gently lower the cover over the keys.
(Figure)
CAUTION.
Be careful to avoid catching your fingers 
when opening or closing the cover.

CAUTION.
Hold the cover with both hands when opening or closing it. Do not release it until it is fully opened or closed. Be careful to avoid catching fingers (yours or others, especially children's) between the cover and main unit.
CAUTION.
Do not place objects, such as a piece of metal or paper, on top of the key cover. Small objects placed on the key cover may fall inside the unit when the cover is opened and may be nearly impossible to remove. This could cause electric shock, short circuit, fire or other serious damage to the instrument.

Music Rest.
To raise the music rest:
1.	Pull the music rest up and toward yourself as far as it will go.
2.	Flip down the two metal supports at the left and right on the rear of the music rest.
3.	Lower the music rest so that it rests on the metal supports.
To lower the music rest:
1.	Pull the music rest toward yourself as far as it will go.
2.	Raise the two metal supports (at the rear of the music rest).
3.	Gently lower the music rest backward until it is all the way down.

CAUTION.
Do not try to use the music rest in a half-raised position.
When lowering the music rest, do not release your hands from the music rest until it is all the way down.

Turning the Power On.
1.	Connect the power cord.
Insert the plugs at the ends of the cord: one into the AC INLET on the YDP-123, and the other into a standard AC outlet.
In some areas, a plug adaptor may be provided to match the pin configuration of AC wall outlets in your area.
(The shape of the plug differs depending on locale.)
2.	Turn the power on.
Press the [POWER] button.
The power indicator located below the left end of the keyboard lights up.
When you're ready to turn off the power, press the [POWER] button again.
The power indicator turns off.

TIP.	Power indicator.
If you close the key cover without turning the power off, the power indicator remains lit, indicating that the power is still on.
	
Setting the Volume.
When you start playing, adjust the [MASTER VOLUME] control to the most comfortable listening level.

CAUTION.
Do not use the YDP-123 at a high volume level for a long period of time, or your hearing may be damaged.
TERMINOLOGY	MASTER VOLUME:
The volume level of the entire keyboard sound
	
TIP.	You can also adjust the [PHONES] output level using the [MASTER VOLUME] control.


Using Headphones.
Connect a pair of headphones to one of the [PHONES] jacks. 
Two [PHONES] jacks are provided.
You can connect two sets of standard stereo headphones. (If you are using only one pair of headphones, you can plug them into either jack.)
(Figure)
bottom surface.
standard stereo phone plug.

Using the Headphone Hanger.
A headphone hanger is included in the YDP-123 package so that you can hang the headphones on the YDP-123. Install the headphone hanger using the included two screws (4 X 10mm) as shown in the figure.

CAUTION.
Do not hang anything other than the headphones on the hanger. Otherwise, the YDP-123 or the hanger may be damaged.


Reference.
This section explains how to make detailed settings for the YDP-123's various functions.

Part Names.
Top panel.
1.	[POWER]	P11
2.	[MASTER VOLUME]	P11
3.	[DEMO]	P15
4.	[METRONOME]	P21
5.	[VOICE]	P17 to 19
6.	[PHONES]	P12
7.	MIDI [IN] [OUT] [THRU]	P23
8.	[PEDAL]	P30
9.	Soft (Left) Pedal	P18
10.	Sostenute (Center) Pedal	P18
11.	Damper (Right) Pedal	P17

Listening to the Demo Songs.
Demo songs are provided that effectively demonstrate each of the YDP-123's voices.

NOTE.
Refer to the voice list on page 17 for more information on the characteristics of each preset voice.
TERMINOLOGY.
Mode:
A mode is a condition or status under which you can execute a certain function. In Demo mode, you can play back demo songs.
NOTE.
You cannot adjust the tempo of demo songs.


Procedure.
1.Turn on the power.
(In case the power is not turned ON) Press the [POWER] button.
When you start playing, adjust the [MASTER VOLUME] control to the most comfortable listening level.

2.Engage Demo mode.
Press the [DEMO] button to engage Demo mode. The [DEMO] button indicator will light.

3.Play a Voice demo.
While holding down the [DEMO] button, press one of the C1-A1  keys to select and start the corresponding demo song. Starting with the selected tune, the demo songs will play in sequence until stopped.

Demo Song List
Demo songs are original (2002  Yamaha Corporation) except for the three songs listed below.
Refer to the voice list on page 17 for voice key assignments.
The demo songs listed below are short re-arranged excerpts from the original compositions.

(Table)
Key.	Voice Name.	Title.	Composer.
C1.	GrandPiano1.	Consolation No.3	F. Liszt
E1.	Harpsichord1.	Gavotte	J.S. Bach
F1.	Harpsichord2.	Invention No.1	J.S. Bach
(Table End)

Adjusting the Volume.
Use the [MASTER VOLUME] control to adjust the volume.

4.Stop the Voice demo.
Press the [DEMO] button to stop playback.


Listening to 50 Piano Preset Songs.
The YDP-123 provides performance data for 50 piano songs. You can simply listen to these songs. You can also refer to the included "50 Greats for the Piano" that contains scores for 50 piano preset songs.

TERMINOLOGY.
Song:
On the YDP-123, performance data is called a "Song." This includes demo songs and piano preset tunes.
TIP.
You can play the keyboard along with the preset song. You can change the voice playing on the keyboard.
TIP.
You can adjust the Reverb type (page 18) that is applied to the voice you play on the keyboard and to the preset song playback.
NOTE.
The default tempo is automatically selected whenever a new preset song is selected, and when a new preset song begins playback.
NOTE.
To adjust the tempo of the preset song playback, see page 21.
NOTE.
When you select a different song (or a different song is selected during chained playback), an appropriate reverb type will be selected accordingly.
NOTE.
MIDI reception is not possible in Piano Song mode. Piano song data is not transmitted via the MIDI connectors.

Procedure.
1.	Engage Preset Song mode.
Press the [DEMO] button to engage Preset Song mode. The [DEMO] button indicator will light.
2.	Play a preset song.
While holding down the [DEMO] button, press one of the C2 to C sharp 6 keys to select and start the corresponding tune. To play all preset songs in sequence, while holding down the [DEMO] button, press the D6 key. 

Adjusting the Volume.
Use the [MASTER VOLUME] control to adjust the volume.

3.	Stop playback.
Playback will stop automatically when the selected preset song has finished. To stop the song during playback (or continuous playback), press the [DEMO] button.
To continue playing other songs, see procedure 2 above.


Selecting & Playing Voices.

Selecting Voices.

TIP
To understand the characteristics of various voices, listen to demo songs for each voice (page 15).
TERMINOLOGY
Voice:
On the YDP-123, a voice means a "tone" or "tonal color."
NOTE
Selecting a voice automatically engages the best-suited reverb type and depth (page 18) for that particular voice.

Procedure.
While holding down the [VOICE] button, press one of the C1-A1 keys to select and start the corresponding voice. 
Then, when you start playing, adjust the [MASTER VOLUME] control to the most comfortable listening level.

(Table)
Key.	Voice Name.	Description.
C1	Grand Piano 1	Recorded samples from a full concert grand piano. Perfect for classical compositions as well as any other style that requires acoustic piano.
C sharp 1	Grand Piano 2	Spacious and clear piano with bright reverb. Good for popular music.
D1	E.Piano 1	An electronic piano sound created by FM synthesis. Good for popular music.
D sharp 1	E.Piano 2	The sound of an electric piano using hammer-struck metallic "tines." Soft tone when played lightly, and an aggressive tone when played hard.
E1	Harpsichord 1	The definitive instrument for baroque music. Since harpsichord uses plucked strings, there is no touch response.
F1	Harpsichord 2	Mixes the same voice an octave higher for a more brilliant tone.
F sharp 1	Vibraphone	Vibraphone played with relatively soft mallets. It has a tremolo effect that is typical for vibraphone.
G1	Church Organ 1	This is a typical pipe organ sound (8 feet plus 4 feet plus 2 feet). Good for sacred music from the Baroque period.
G sharp 1	Church Organ 2	This is the organ's full coupler sound, often associated with Bach's "Toccata and Fugue".
A1	Strings	Spacious and large-scale string ensemble. Try combining this voice with piano in DUAL mode.
(Table End)

Using the Pedals.
Damper (Right) Pedal.
The damper pedal functions in the same way as a damper pedal on an acoustic piano. When the damper pedal is pressed, notes sustain longer. Releasing the pedal immediately stops (damps) any sustained notes. 
(Figure)
When you press the damper pedal here, the notes you play before you release the pedal sustain longer.

Sostenuto (Center) Pedal.
If you play a note or chord on the keyboard and press the sostenuto pedal while the note(s) are held, those notes will sustain as long as you hold the pedal (as if the damper pedal had been pressed) but all subsequently played notes will not be sustained. This makes it possible to sustain a chord, for example, while other notes are played "staccato."
(Figure)
When you press the sostenuto pedal here while holding the note, the note will sustain as long as you hold the pedal.
TIP.
Organ and string voices will continue to sound for as long as the sostenuto pedal is depressed.

Soft (Left) Pedal.
The soft pedal reduces the volume and slightly changes the timbre of notes played while the pedal is pressed. The soft pedal will not affect notes that are already playing when it is pressed.


Adding Variations to the Sound - Reverb.
This control enables you to select various digital reverb effects that add extra depth and expression to the sound to create a realistic acoustic ambience.

Procedure.
When you select a reverb, the reverb is automatically turned on.
While holding down the [VOICE] button, press one of the C2 to E2 keys to select a reverb type.

(Table)
Key	Reverb Type	Description
C2	Room	This setting adds a continuous reverb effect to the sound, similar to the acoustic reverberation you would hear in a room.
C sharp 2	Hall1	For a "bigger" reverb sound, use the HALL 1 setting. This effect simulates the natural reverberation of a small-size concert hall.
D2	Hall2	For a truly spacious reverb sound, use the HALL 2 setting. This effect simulates the natural reverberation of a large concert hall.
D sharp 2	Stage	Simulates the reverb of a stage environment.
E2	Off	No effect is applied.
(Table End)

Adjusting Reverb Depth.
Adjust the reverb depth for the selected voice by pressing one of the C3 to G sharp 4 keys while holding down the [VOICE] button. The depth range is from 0 through 20.

The depth value increases as you press higher keys.

TIP.
The default reverb type (including OFF) and depth settings are different for each voice.
TIP.
depth 0: 	no effect
depth 20: 	maximum reverb depth


Combining Two Voices (Dual mode)
You can play two voices simultaneously across the entire range of the keyboard. In this way, you can simulate a melody duet or combine two similar voices to create a thicker sound.

NOTE. 
You cannot assign the same voice to Voice 1 and Voice 2 simultaneously in Dual mode.
TIP.
Reverb in Dual Mode
The reverb type assigned to Voice 1 will take priority over the other. (If the reverb is set to OFF, Voice 2 reverb type will be in effect.)  Reverb depth setting (page 18) will be applied only to Voice 1.

Procedure.
1.	Engage Dual mode.
While holding down the [VOICE] button, press two of the C1 to A1 keys at simultaneously (or press one key while holding another).
Refer to the voice list on page 17 for available voices.

According to the voice priority shown in the voice list (page 17), the voice assigned to the lower keyboard will be designated as Voice 1 (the other voice will be designated as Voice 2).

You can make the following settings only in Dual mode:

Setting the Octave.
You can shift the pitch up and down in octave steps for Voice 1 and Voice 2 independently. Depending on which voices you combine in Dual mode, the combination may sound better if one of the voices is shifted up or down an octave.
While holding down the [VOICE] button, press one of the C5 to F5 keys.

C5 key: minus 1(Voice 1), C sharp 5 key: 0 (Voice 1), D5 key: plus 1(Voice 1),
D sharp 5 key: minus 1 (Voice 2), E5 key: 0 (Voice 2), F5 key: plus 1(Voice 2)

Setting the Balance.
You can set one voice as the main voice, and another voice as a softer, mixed voice.
While holding down the [VOICE] button, press one of the F sharp 5 to F sharp 6 keys.
A setting of "0" produces an equal balance between the two Dual mode voices. Settings below "0" increases the volume of Voice 2 in relation to Voice 1, and settings above  "0" increases the volume of Voice 1 in relation to Voice 2.

2.	Exit Dual mode and return to normal play mode.
While holding down the [VOICE] button, press one of the C1 to A1 keys.


Transposition.
The YDP-123's Transpose function makes it possible to shift the pitch of the entire keyboard up or down in semitone intervals up to a maximum of six semitones, and lets you easily match the pitch of the keyboard to the range of a singer or other instruments.
For example, if you set the transposition amount to "5," playing key C produces pitch F. In this way, you can play a song as though it were in C major, and the YDP-123 will transpose it to the key of F.

TERMINOLOGY.
Transpose:
Changing the key signature of a song. On the YDP-123, transposing shifts the pitch of the entire keyboard.
TIP.
Notes below and above the A minus 1 .... C7 range of the YDP-123 sound one octave higher and lower, respectively.

Procedure.
While holding down the A minus 1 and C sharp 0 keys, press one of the F sharp 2 to F sharp 3 keys to set the desired amount of transposition.

Pressing the C3 key produces normal keyboard pitch. Pressing the key to the left of C3 (equal B2) transposes the pitch of the keyboard down a semitone, the next key to the left (equal B flat 2) transposes down a whole tone (two semitones), etc., down to the F sharp 2 key, which transposes down six semitones. Upward transposition is accomplished in the same way using the keys to the right of C3, up to F sharp 3, which transposes up six semitones.


Fine-tuning the Pitch.
You can fine-tune the pitch of the entire instrument. This function is useful when you play the YDP-123 along with other instruments or CD music.

TERMINOLOGY
Hz (Hertz):
This unit of measurement refers to the frequency of a sound and represents the number of times a sound wave vibrates in a second.

Procedure.
To tune up (in about 0.2Hz steps):
Hold down the A minus 1 and B minus 1 keys simultaneously and press any key between C3 and B3.
To tune down (in about 0.2Hz steps):
Hold down the A minus 1 and A sharp minus 1 keys simultaneously and press any key between C3 and B3.
To restore standard pitch:
Hold down the A minus 1, A sharp minus 1 and B minus 1 simultaneously and press any key between C3 and B3.

Setting range: 427.0 to 453.0 Hz
Standard pitch: 440.0 Hz


Using the Metronome.
The YDP-123 features a built-in metronome (a device that keeps an accurate tempo) that is convenient for practicing.

NOTE
During preset song playback, you can set the tempo from 20 to 400 beats per minute, depending on the song data.

Procedure.
1.	Start the metronome.
Press the [METRONOME] button to turn on the metronome. 

Determines the time signature.
While holding down the [METRONOME] button, press one of the C3 to F3 keys.
The highest key

C3 key: No downbeat, C sharp 3 key: 2/4, D3 key: 3/4, D sharp 3 key: 4/4, E3 key: 5/4, F3 key: 6/40

Adjusting the tempo.
The tempo of the metronome and preset song playback can be set from 32 to 280 beats per minute.
While holding down the [METRONOME] button, press a sequence of C4 to A4 keys to specify a three-digit number.
Select a number starting from the left-most digit. For example, to set the tempo "95," press the C4 (0), A4 (9) and F4 (5) keys in sequence.

To increase the tempo value in steps of one, while holding down the [METRONOME] button, press the C sharp 5 key. To decrease the tempo value in steps of one, while holding down the [METRONOME] button, press the B4 key.
To increase the tempo value in steps of ten, while holding down the [METRONOME] button, press the D5 key. To decrease the tempo value in steps of ten, while holding down the [METRONOME] button, press the A sharp 4 key.
To set the  default tempo (the metronome's original tempo or the song's original tempo),  while holding down the [METRONOME] button, press the C5 key.

Adjusting the volume.
You can change the volume of the metronome sound.
While holding down the [METRONOME] button, press one of the C1 to G2 keys to determine the volume.

2.	Stop the metronome.
Turn off the metronome by pressing the [METRONOME] button.


About MIDI.
TIP.
MIDI performance data and commands are transferred in the form of numeric values.
TIP.
Since MIDI data that can be transmitted or received varies depending on the type of MIDI device, check the "MIDI Implementation Chart" to find out what MIDI data and commands your devices can transmit or receive. The YDP-123's MIDI Implementation Chart appears on page 38.

MIDI (Musical Instrument Digital Interface) is a standard format for data transmission and reception. It enables the transfer of performance data and commands between MIDI devices and personal computers.
Using MIDI, you can control a connected MIDI device from the YDP-123, or control the YDP-123 from a connected MIDI device or computer.

MIDI connectors.
(Figure)
MIDI [IN]: 	Receives MIDI data.
MIDI [OUT]: 	Transmits MIDI data.
MIDI [THRU]: 	Transmits data received at the MIDI [IN] connector, passing it through the unit unmodified.

MIDI cables.
Prepare dedicated MIDI cables.
TIP.
You can also obtain detailed information about MIDI from various music books and other publications.


Connecting a Personal Computer.
You can enjoy computer music data on the YDP-123 by connecting a computer to the MIDI jack.

NOTE.	When the YDP-123 is used as a tone module, performance data with voices that are not found on the YDP-123 will not be played correctly. 
	
"The Clavinova-Computer Connection," is a supplementary guidebook that describes, for beginners, what you can do with your YDP-123 and a personal computer and how to set up a YDP-123-Computer system (although the guidebook only mentions the Clavinova, it applies equally to the YDP-123 digital piano). The document is available as a PDF file (in English) at the following Internet address:
Clavinova Web site (English only):
http://www.yamahaclavinova.com/
Yamaha Manual Library:
http://www2.yamaha.co.jp/manual/english/

There are two methods by which to connect the YDP-123 to a personal computer:
1. Use a MIDI interface and the YDP-123's MIDI connectors (page 25).
2. Use the USB port on the computer and a USB interface (model UX16, UX96, or UX256) (page 25).

NOTE	Before you connect the YDP-123 to a personal computer, first turn off the power to both the YDP-123 and the computer. After you make the connections, turn on the power to the computer first, then turn on the power to the YDP-123.
	
1.	Using a MIDI interface and the YDP-123's MIDI connectors
Connection
Use a MIDI interface to connect a computer to the YDP-123 using special MIDI cables.
(Figure)

2.	Connecting the computer's USB port to the YDP-123 via a USB interface, such as the UX16,UX96, or  UX256.
Connect the computer's USB port to the USB interface (such as the UX16, UX96, or UX256) using a USB cable. Install the driver (that came with the USB interface) on the computer, and connect the USB interface to the YDP-123 using a serial cable or MIDI cables.
For more information, refer to the instruction manual for the USB interface.

An example of connecting the USB interface to the YDP-123 using MIDI cables.
(Figure)



MIDI Functions.
You can make detailed adjustments to MIDI settings.
For more information about MIDI, see the "About MIDI" section (page 23).

MIDI Transmit/Receive Channel Selection.
In any MIDI control setup, the MIDI channels of the transmitting and receiving equipment must be matched for proper data transfer.
This parameter enables you to specify the channel on which the YDP-123 transmits or receives MIDI data. 

NOTE.
Demo and preset song data are not transmitted via MIDI.
NOTE.
In Dual mode, Voice 1 data is transmitted on its specified channel and Voice 2 data is transmitted on the next greater channel number relative to the specified channel. In this mode, no data is transmitted if the transmit channel is set to "OFF."

TIP.
ALL:
A "Multi-timbre" Receive mode is available. It allows simultaneous reception of different parts on all 16 MIDI channels, enabling the YDP-123 to play multi-channel song data received from a music computer or sequencer.
1 plus 2:
A "1+2" Receive mode is available. It allows simultaneous reception on channels 1 and 2 only, enabling the YDP-123 to play 1 and 2 channel song data received from a music computer or sequencer.
TIP.
Program change and other like channel messages received will not affect the YDP-123's panel settings or the notes you play on the keyboard.

NOTE.
The YDP-123 does not receive MIDI data when it is in Demo or Preset Song mode.

Procedure.
Setting the transmit channel
While holding down the A minus 1 and C sharp 0 keys, press one of the C1 to E2 keys.
Setting the receive channel
While holding down the A minus 1 and C sharp 0 keys, press one of the C4 to F5 keys.
(Figure)

Local Control ON/OFF.
"Local Control" refers to the fact that, normally, the YDP-123 keyboard controls its internal tone generator, allowing the internal voices to be played directly from the keyboard. This situation is "Local Control On," since the internal tone generator is controlled locally by its own keyboard.
Local control can be turned OFF, however, so that the YDP-123 keyboard does not play the internal voices, but the appropriate MIDI information is still transmitted via the MIDI OUT connector when notes are played on the keyboard. At the same time, the internal tone generator responds to MIDI information received via the MIDI IN connector.

Procedure.
While holding down the A minus 1 and C sharp 0 keys, press the C6 key.


Program Change ON/OFF.
Normally the YDP-123 will respond to MIDI program change numbers received from an external keyboard or other MIDI device, causing the correspondingly-numbered voice to be selected on the corresponding channel (the keyboard voice does not change). The YDP-123 will normally also send a MIDI program change number whenever one of its voices is selected, causing the correspondingly-numbered voice or program to be selected on the external MIDI device if the device is set up to receive and respond to MIDI program change numbers.
This function makes it possible to cancel program change number reception and transmission so that voices can be selected on the YDP-123 without affecting the external MIDI device.

TIP.
For information on program change numbers for each of the YDP-123's voices, refer to page 34 in the MIDI Data Format section.

Procedure.
While holding down the A minus 1 and C sharp 0 keys, press the C sharp 6 key.


Control Change ON/OFF.
Normally the YDP-123 will respond to MIDI control change data received from an external MIDI device or keyboard, causing the voice on the corresponding channel to be affected by pedal and other "control" settings received from the controlling device (the keyboard voice is not affected). The YDP-123 also transmits MIDI control change information when the pedal or other appropriate controls are operated.
This function makes it possible to cancel control change data reception and transmission so that, for example, the YDP-123's pedal and other controls can be operated without affecting an external MIDI device.

TIP.
For information on control changes that can be used with the YDP-123, refer to the MIDI Data Format on page 34.

Procedure.
While holding down the A minus 1 and C sharp 0 keys, press the D6 key.



Troubleshooting.

Problem.	
The YDP-123 does not turn on.	
Possible Cause and Solution.
The YDP-123 has not been plugged in properly. Securely insert the female plug into the socket on the YDP-123, and the male plug into a proper AC outlet (page 11).

Problem.
A click or pop is heard when the power is turned on or off.	
Possible Cause and Solution.
This is normal when electrical current is being applied to the instrument.

Problem.
Noise from the speakers or headphones is audible.
Possible Cause and Solution.
The noise may be due to interference caused by the use of a mobile phone in close proximity to the YDP-123. Turn off the mobile phone, or move it further away from the YDP-123.

Problem.
The overall volume is low, or no sound is heard.	
Possible Cause and Solution.
The Master Volume is set too low. Set it to an appropriate level using the [MASTER VOLUME] control.
Make sure a pair of headphones is not connected to the headphones jack.
Make sure that Local Control (page 26) is ON.

Problem.
The damper pedal has no effect, or the sound continuously sustains even when the damper pedal is not pressed.	
Possible Cause and Solution.
The pedal cord may not be properly connected. Make sure to securely insert the pedal cord into the [PEDAL] jack (page 30).


Options.
BC-100 Bench.
A comfortable bench styled to match your Yamaha YDP-123.
HPE-160 Stereo Headphones.
High-performance lightweight dynamic headphones with extra-soft ear pads.


Keyboard Stand Assembly.
CAUTION.
Be careful not to confuse parts, and be sure to install all parts in the correct direction. Please assemble in accordance with the sequence given below.
Assembly should be carried out by at least two persons.
Be sure to use the correct screw size, as indicated below. Use of incorrect screws can cause damage.
Be sure to tighten up all screws upon completing assembly of each unit.
To disassemble, reverse the assembly sequence given below.

Have a Phillips-head (plus) screwdriver ready.

Remove the following parts from the package.

Assembly Parts.
1. 6 x 20 mm long screws x4  
2. 6 x 16 mm short screws x4 
3. 4 x 12 mm thin screws x2  
4. 4 x 20 mm tapping screws x4  
Cord holders x 2

Main unit.
Side panel (left)
Side panel (right)
Rear panel.
Pedal box.
Bundled pedal cord inside.
AC power cord.

TIP.
A headphone hanger is included in the YDP-123 package. You can attach a headphone hanger on the YDP-123 to hang the headphones (page 12).

1.	Attach the side panels to the pedal box.
(Figure)
(1)	Untie and straighten out the bundled cord attached to the bottom of the pedal box. 
Don't discard the vinyl tie, you'll need it later in step 5.
(2)	Align the sides of the pedal box with the left and right side panels.
(3) Use the four 6~20 mm long screws 1 to attach the pedal box.

2. Attach the rear panel.
(Figure)
(1)	Secure the top of the rear panel to the side panel brackets using two 4x12 mm thin screws 3.
(2) 	Secure the bottom of the rear panel to the pedal box using four 4 x 20 mm tapping screws 4 .

3. Mount the main unit.
CAUTION.
Fingers can become pinched between the main unit and the rear or side panels, be extra careful so as not to drop the main unit.
Do not hold the keyboard in any position other than the position shown in the illustration.
(Figure)
Be sure to place your hands at least 10 cm from either end of the main unit when positioning it.

4.	Fix the main unit.
(Figure)
(1) Center the main unit to pro-duce equal clearance on the left and right sides.
(2) Use 6x16 mm short screws 2 to secure the main unit from the front.

5.	Connect the pedal cord.
(Figure)
(1) Insert the pedal cord plug to the pedal connector from the rear.
(2) Attach the cord holders to the rear panel as shown, then clip the cord into the holders.
(3) Use a vinyl tie to take up any slack in the pedal cord.

6.	Set the voltage selector and connect the power cord.
(Figure)
Voltage Selector.
Before connecting the AC power cord, check the setting of the voltage selector which is provided in some areas. To set the selector for 110V, 127V, 220V or 240V main voltages, use a "minus" screwdriver to rotate the selector dial so that the correct voltage for your region appears next to the pointer on the panel. The voltage selector is set at 240V when the unit is initially shipped. After the proper voltage has been selected, connect the AC power cord to the AC INLET and an AC wall outlet. A plug adaptor may be also provided in some areas to match the pin configuration of the AC wall outlets in your area.

WARNING
An improper voltage setting can cause serious damage to the YDP-123 or result in improper operation.

7.	Set the adjuster.
Rotate the adjuster until it comes in firm contact with the floor surface.

After completing the assembly, please check the following.
Are there any parts left over?
->	Review the assembly procedure and correct any errors.
Is the YDP-123 clear of doors and other movable fixtures?
->	Move the YDP-123 to an appropriate location.
Does the YDP-123 make a rattling noise when you shake it?
->	Tighten all screws.
Does the pedal box rattle or give way when you step on the pedals?
->	Turn the adjuster so that it is set firmly against the floor.
Are the pedal and power cords inserted securely into the sockets?
->	Check the connection.
If the main unit creaks or is otherwise unsteady when you play on the keyboard, refer to the assembly diagrams and retighten all screws.

When moving the instrument after assembly, always hold the bottom of the main unit.

CAUTION.
Do not hold the key cover or top portion. Improper handling can result in damage to the instrument or personal injury.

Index is not available.

Appendix
This section introduces reference material.

MIDI Data Format is not available.
MIDI Implementation Chart is not available.


Specifications.
Item	YDP-123
Keyboard	88 keys (A minus 1 to C7)
Sound Source	AWM Stereo Sampling
Polyphony	32 Notes Max.
Voice Selection	10
Effect	Room, Hall1, Hall2, Stage
Volume	Master Volume
Controls	Dual, Metronome, Transpose
Pedal	Damper, Sostenuto, Soft
Demo Songs	10 voice Demo Songs, 50 preset Songs
Jacks/Connectors	MIDI (IN/OUT/THRU), PHONES X 2
Main Amplifiers	20W x 2
Speakers	Oval (12cm x 6cm) x 2 
Dimensions (W x D x H) (with music rest)	1345mm x 426mm x 815mm [52-15/16" x 16-3/4" x 32-1/16"]
(1345mm x 426mm x 968mm) [53-15/16" x 16-3/4" x 38-1/8"]
Weight	41kg (90lbs., 6oz)
Accessories	Owner's Manual, "50 greats for the Piano" (Music Book), Bench (included or optional depending on locale), Quick Operation Guide

Specifications and descriptions in this owner's manual are for information purposes only. Yamaha Corp. reserves the right to change or modify products or specifications at any time without prior notice. Since specifications, equipment or options may not be the same in every locale, please check with your Yamaha dealer.
