Yamaha P 155 Instruction Manual

							Handling Recorded Songs with a USB Storage Device
P-155 Owner’s Manual
ENGLISH
31
Handling Recorded Songs with a USB 
Storage Device
You can handle recorded songs (save, load, and delete) with a USB stora\
ge device. You can also for-
mat the device or media.
Before using a USB device, read the “Precautions when using the USB [\
TO DEVICE] terminal” sec-
tion on page 53.
Ab out Save and Load
Save
You can save three recorded songs in the instrument to the USB storage device as SMF 
song files. These songs can be saved to a “container” (or “USB” file) in the USB storage 
device. 100 containers are available — S00–S99.
S ince the recorded songs are saved in SMF format, they can be played back on other 
instruments.
Load
If  you want to only play the song in the USB storage device, the following operation is 
not necessary. For instructions on playing the song, see “Playing Back USER and USB 
Songs” on page 36. The Load operation can be used if you want to edit the recorded 
song on the instrument. Data can be loaded to “USER” file (U03).
Handling of recorded songs can-
not be done during Demo/PRE-
SET/USER/USB Song playback 
and in the Record mode.
For details on connecting a USB 
storage device, see page 49.
The file numbers which can be 
handled in this instrument are 100 
files.
• SMF song numbers: S00–S99
NOTE
NOTE
NOTESave
Instrument USB storage device
Internal memory Memory
“USER” file ( U01)
Recorded Song 1
“USER” file ( U02)
Recorded Song 2
“USER” file ( U03)
Recorded Song 3 “USB” file (
S00)
SMF Song 0
“USB” file ( S02)
SMF Song 2
“USB” file (
S01)
SMF Song 1
“USB” file ( S99)
SMF Song 99
The “S” indication at the top of the 
file name represents “SMF.” 
TERMINOLOGY
SMF (Standard MIDI File):
The SMF (Standard MIDI File) 
format is one of the most common 
and widely compatible sequence 
formats used for storing sequence 
data. There are two variations: 
Format 0 and Format 1. 
A large number of MIDI devices 
are compatible with SMF Format 0, 
and most commercially available 
MIDI sequence data is provided in 
SMF Format 0. The SMF format for 
sequence files allows you to 
exchange song data between 
different sequencers. User songs 
r ecorded on the instrument are 
SMF Format 0.
NOTE
Load
Instrument USB storage device
Internal memory Memory
“USER” file ( U01)
Recorded Song 1
“USER” file ( U02)
Recorded Song 2
“USER” file ( U03)
Recorded Song 3 “USB” file (
S00)
SMF Song 0
“USB” file ( S02)
SMF Song 2
“USB” file (
S01)
SMF Song 1
“USB” file ( S99)
SMF Song 99 
						

							Handling Recorded Songs with a USB Storage Device
P-155 Owner’s Manual
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32
Saving a Song
1.Select a “USER” file to save.
Select a “USER” file to save by using the [SONG SELECT] and [–/NO][+/YES] 
buttons.
2.Select a “USB” file in the device and save the 
“USER” file.
Af ter making sure that the USB storage device is connected to the instrument, 
press the 
[FILE]  button (the “SAVE TO USB” indicator lights). Then, while hold-
ing the 
[FILE] button, simultaneously press the [–/NO][+/YES] buttons to select 
a “USB” file (S00–S99). After releasing the 
[FILE] button, “ n Y ” (no/yes) 
appears in the display. Press the 
[+/YES]  button to save the files. The file is saved 
into the “USER FILES” folder and named as “USERSONGxx.MID.”
Overwriting the song
If  you select a “USB” file which contains an SMF song, three dots appear in the 
display (ex., “S.0.0.”). If you do not want to overwrite the file, press the 
[–/NO] 
button when “ n Y  (no or yes)” appears in the display and select another “USB” 
file. If you want to overwrite the file, press the 
[+/YES] button. After “ n~Y” 
appears in the display again to confirm whether you wish to overwrite the file or 
not, press the 
[+/YES] button once more.
CAUTION
While the instrument is accessing data (such as during Save, Load, Dele\
te and For-
mat operations) or is mounting the USB storage device (shortly after t\
he connection: 
until the FILE LOAD LED flash stops), do NOT unplug the USB cable, do NOT remove 
the media from the device, and do NOT turn the power off to either devic\
es. Doing 
so may corrupt the data on either or both devices.
3.Exit from the file operation mode.
Pr ess the [FILE] button several times to exit the file operation mode. (The FILE 
indicators turn off.)
Play the recorded song (see pages 36).
CAUTION
Do not rename “USER” files on a computer. If the file name is changed in this way, 
the file cannot be loaded to the instrument.
12
13
2
If the selected file has no data, 
the file will not be saved (you can-
not select a container for SMF 
songs — S00–S99). Confirm that 
the selected file has data by mak-
ing sure that the indicator of 
[RIGHT] or [LEFT] is turned on.
NOTE
If you move an SMF song from the 
“USER FILES” folder to the top 
folder using a computer, the file 
type will be changed — from a 
SMF song (S00–S99) to an Exter-
nal song.
NOTE 
						

							Handling Recorded Songs with a USB Storage Device
P-155 Owner’s Manual
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33
Loading a Song
CAUTION
If the “USER” file (U03) on the instrument already contains da\
ta, this operation can 
result in overwriting of the data. Make sure to save important data to your computer 
beforehand.
1.Select a “USB” file in the device.
After making sure that the USB storage device is connected to the instrument, 
press the 
[FILE] button (the “LOAD TO USER.” indicator lights). Then, while 
holding the 
[FILE] button, press the [–/NO][+/YES] buttons to select a file 
(S00–S99). Data saved on the instrument can only be loaded back to the instru-
ment. 
2.Load a song to “USER” file (U03).
“ n  Y ” (no/yes) appears in the display. Press the [+/YES] button to load a “USB” 
file. The file will automatically be loaded into the “USER” file  (U03).
The indication “ -” moves from left to right in display, indicating that save oper-
ation is in process.
CAUTION
While the instrument is accessing data (such as during Save, Load, Dele\
te and For-
mat operations) or is mounting the USB storage device (shortly after t\
he connection: 
until the LOAD TO USER LED flash stops), do NOT unplug the USB cable, do NOT 
remove the media from the device, and do NOT turn the power off to eithe\
r devices. 
Doing so may corrupt the data on either or both devices.
CAUTION
Do not manually change the file name on the USB storage device by using a com-
puter; doing so will render the file unplayable or unable for loading on the instru-
ment.
CAUTION
Do not turn off the power to the instrument while flashing dashes appear in the dis-
play (indicating the operation is in process). Doing so may damage the\
 data.
When loading is completed, the “ End” indication appears in the display, and 
the “USB” file is loaded into the “USER” file (U03).
3.Exit from the file operation mode.
Pr ess the [FILE] button several times to exit the file operation mode. (The FILE 
indicators turn off.)
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							Handling Recorded Songs with a USB Storage Device
P-155 Owner’s Manual
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34
Deleting Song Files
1.Select a “USB” file to be deleted.
Press the [FILE] button. (The “DEL./FORMAT” indicator lights.) Then, hold the 
[FILE]  button, simultaneously press the  [–/NO][+/YES] buttons to select a file to 
be deleted. Two types of files will be displayed in order:
•
Sxx....... SMF songs
•
xxx....... External songs (commercially available songs or songs which have  been edited on a computer)
2.Delete the file.
After releasing the [FILE] button, “ n Y  (no or yes)” appears in the display. If you 
want to delete the file, press the 
[+/YES] button. After “ n~Y” appears in the dis-
play again to confirm whether you wish to delete the file or not, press the 
[+/YES] button once more.
If  you do not want to delete the file, press the 
[–/NO] button.
CAUTION
While the instrument is accessing data (such as during Save, Delete, Lo\
ad and For-
mat operations) or is mounting the USB storage device (shortly after t\
he connection: 
until the LOAD TO USER LED flash stops), do NOT unplug the USB cable, do NOT 
remove the media from the device, and do NOT turn the power off to eithe\
r devices. 
Doing so may corrupt the data on either or both devices.
3.Exit from the file operation mode.
Pr ess the [FILE] button to exit the file operation mode. (The FILE indicators 
turn off.)
1 2321
Audition the song to be deleted 
before deleting. Songs cannot be 
played back after engaging the 
File Operation mode.
Only files which contain data will 
be displayed.
The following types of songs can-
not be deleted. If you try to delete 
the song, “Pro” (Protected) 
appears in the display.
•P rotected songs (extension: 
Cxx, Exx or SME)
• Disklavier Piano Soft songs
For SMF songs (Sxx), the file 
numbers are fixed and not 
changed by deleting files. 
However, the file numbers of 
External songs are not fixed and 
may be changed by deleting 
External songs.
NOTE
NOTE
NOTE
NOTE 
						

							Handling Recorded Songs with a USB Storage Device
P-155 Owner’s Manual
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35
Formatting the USB Storage Device
CAUTION
If data is already saved to the USB storage device, be careful not to fo\
rmat it.
If you format the device, all the previously saved data will be deleted.\
1.Engage the file operation mode.
Pr ess the [FILE] button. (The “DEL/ FORMAT” indicator lights.) Then, while 
holding the 
[FILE] button, simultaneously press the [–/NO] and [+/YES] but-
to ns. When “For” (Format) appears in the display, release the 
[FILE] butto n to 
display “ n Y ” (no/yes).
2.Execute the format operation.
Afte r “n Y ” (no/yes) appears in the display, press the [+/YES] button. After 
“ n~Y ” appears in the display again to confirm whether you wish to format the 
device or not, press the 
[+/YES]  button once more. If you do not want to format 
the device, press the 
[–/NO] button.
CAUTION
While the instrument is accessing data (such as during Save, Delete, Lo\
ad and For-
mat operations) or is mounting the USB storage device (shortly after t\
he connection: 
until the LOAD TO USER LED flash stops), do NOT unplug the USB cable, do NOT 
remove the media from the device, and do NOT turn the power off to eithe\
r devices. 
Doing so may corrupt the data on either or both devices.
3.Exit from the file operation mode.
Pr ess the  [FILE] button to exit the file operation mode. (The FILE indicators 
turn off.)
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31 
						

							Playing Back “USER” and “USB” Songs
P-155 Owner’s Manual
ENGLISH
36
Playing Back “USER” and “USB” Songs
The following types of songs are available. You can simply listen to these songs or use them for 
practice (pages 14, 15).
“USER” songs
•Songs (U01–U03) which you recorded to the instrument by using the 
re co rd  function (page 25).
• External songs in the instrument
Songs transferred from a computer (including commercially available songs and 
songs which have been edited on a computer). Songs can be transferred (saved) to 
the instrument by using the included Musicsoft Downloader software (pages 51). 
The songs are saved to an area of the internal memory separate from the area for 
re co rded songs. Up to 255 songs can be played back on this instrument (numbers 
001–255).
“USB” songs
•S ongs (S00–S99) which you recorded to the instrument by using the 
re co rd  function (pages 32) and saved to the USB storage device.
• External songs in the USB storage device
Songs saved in the USB storage device (including commercially available songs and 
songs which have been edited on a computer). Up to 999 songs can be played back 
on this instrument (numbers 001–999).
Sequence formats that can be played on the instrument
•S MF (Standard MIDI File) Formats 0 and 1
The SMF format is one of the most common and widely compatible sequence for-
mats used for storing sequence data. There are two variations: Format 0 and For-
mat 1. A large number of MIDI devices are compatible with SMF Format 0, and 
most commercially available MIDI sequence data is provided in SMF Format 0. 
The SMF format for sequence files allows you to exchange song data between dif-
ferent sequencers.
The “USER” and “USB” songs 
cannot be played back during 
Demo/PRESET song playback or 
in the File Operation and Record 
modes.
If the metronome is being used 
during playback, the metronome 
will automatically stop when play-
back is stopped.
If the REVERB type is changed 
via the panel controls during play-
back, both the playback and key-
board reverb effects will be 
changed.
If the EFFECT type is changed via 
the panel controls during playback, 
the playback effect may be 
switched off in some cases.
NOTE
NOTE
NOTE
NOTE
Specify the Song Part (Channel) and Play the Song
Because this instrument is not compatible with GM/XG/DOC/GS/XF Format, when listening to external songs, you can specify 
the song parts in this setting.
The “ALL” setting plays back all 16 par ts, while “1+2” plays back parts 1 and 2.
Ke ep in mind that songs recorded on other devices may use a variety of voices not available on this instrument and hence may 
sound different than the original songs. In general, this instrument should be used to play back piano songs.
S ince piano songs are generally recorded to parts 1 and 2 exclusively, the “1+2” setting is best used with only the piano voice .
Default setting is “ALL.”
Setting range: ALL, 1&2
To  set the song part (channel), see Function F5.5 (page 43).
Par t 1 P art 2 Part 3(ALL)
Piano voices (1+2) Other voices 
						

							Playing Back “USER” and “USB” Songs
P-155 Owner’s Manual
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37
1.Press the [SONG SELECT] button (the USER or USB 
indicator lights).
2.Press the [–/NO] [+/YES] buttons to select a song 
(Uxx*)/(xxx*) or (Sxx*)/(xxx*).
The letters “xx” represent the song number.
3.Press the [PLAY/PAUSE] button to start playback.
The current measure number appears on the display during playback.
•You can play the keyboard while the instrument is playing back a song. You 
can also play the notes with a voice different from the playback voice by 
selecting a voice from the panel.
Adjust the tempo
Y ou can use the 
[TEMPO/FUNCTION –, +] buttons to adjust the playback 
te mpo as required before or during playback. The default tempo (the song’s 
original tempo) is set when you press the 
[–] and [+] buttons simultaneously.
4.Press the [STOP] button or [PLAY/PAUSE] button to 
stop playback.
Wh en playback is complete, the instrument automatically stops and locates the 
to p of the song. To stop playback in the middle of a song, press the
 [STOP] but-
to n. You can also pause playback by pressing the 
[PLAY/PAUSE] button.
Turning part playback on and off
Wh en you select a song on the instrument, the indicators for parts that contain data 
(one of
 [RIGHT] [LEFT] or both) are lit in green. While the instrument is playing or 
stopped, pressing these part buttons turns off the indicators, and the data on those 
parts is not played. Pressing the part buttons toggles part playback on and off. 
1342
Recorded song playback cannot 
be started when the recorder con-
tains no data.
Y ou can also enjoy playing duets 
with yourself by recording one 
part of a duet or a song for two 
pianos, then playing the other 
part while the recorded part plays 
back.
If you have External songs in the 
instrument, you can use the 
r epeat function.
ALL :Play all External songs in 
sequence.
rnd :Play all External songs con-
tinuously in random order.
NOTE
NOTE
NOTE
Parts can be turned on or off 
before or during playback.
NOTE
Pa rt button indication
On:  Contains data
Off:
 Contains no data 
						

							Detailed Settings – [FUNCTION]
P-155 Owner’s Manual
ENGLISH
38
Detailed Settings – [FUNCTION]
You can set various parameters to make the best use of instrument functions, such as fine tuning the pitch or selecting a 
scale, etc.
The following parameters are available.
This instrument has eight main functions.
Some of these main functions consist of a set of sub-functions.
Function List
FunctionSub-functionDefault settingDisplayReference  pageBackup Group
Fine tuning of 
the pitch —
440.0Hz F1. 40 F8.3
Selecting a scaleScale1 (Equal Temperament)F2.140F8.1Base NoteCF2.241
Dual functions Dual Balance Different for each voice combination. F3.1 41
F8.1
Dual Detune Different for each voice combination. F3.2 41
V
oice 1 Octave Shift Different for each voice combination. F3.3 41
V oice 2 Octave Shift Different for each voice combination. F3.4 41
V oice 1 Effect Depth Different for each voice combination. F3.5 41
V oice 2 Effect Depth Different for each voice combination. F3.6 41
Reset — F3.7 41
Split functions
Split PointF #2F4.142
F8.1
Split BalanceDifferent for each voice combination.F4.242
Right Voice Octave ShiftDifferent for each voice combination.F4.342
Left Voice Octave ShiftDifferent for each voice combination.F4.442
Right Voice Effect DepthDifferent for each voice combination.F4.542
Left Voice Effect DepthDifferent for each voice combination.F4.642
Sustain Pedal Range1 (for the right Voice)F4.742
Reset—F4.842
Other functions A
UX Pedal 1 (Soft Pedal) F5.1 43
F8.4
Soft Pedal Effect Depth 3 F5.2 43
Sustain Sample Depth 12 F5.3 43
K
ey off Sample Volume 10 F5.4 43
Song Channel Selection ALL F5.5 43
Sustain Pedal Type 1 F5.6 43
A UX Pedal Type 1 F5.7 43
Damper Resonance Effect ON/OFF ON F5.8 43
Damper Resonance Effect Depth 5 F5.9 43
Metronome volume—10F6.44F8.1
MIDI functions MIDI Transmit Channel Selection 1 F7.1 44
F8.2
MIDI Receive Channel Selection ALL F7.2 44
Local Control ON/OFF ON F7.3 44
Program Change ON/OFF ON F7.4 44
Control Change ON/OFF ON F7.5 45
P
anel/Status Transmit — F7.6 45
Initial Setup Send — F7.7 45
Backup functions
V oiceOFFF8.146
—
MIDIONF8.246
TuningONF8.346
OthersONF8.446
Character CodeInt (International)F8.546 
						

							Detailed Settings – [FUNCTION]
P-155 Owner’s Manual
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39
Basic Procedure in Function
Follow the steps below to use the functions.
If you become lost while using a function, return to this page and read \
the basic procedure.
1.Press the [TEMPO/FUNCTION] button to enter the 
Function.
The [FUNCTION] indicator lights.
2.Use the [TEMPO/FUNCTION –, +] buttons to select 
the desired function from F1–F8.
When   (that include the sub-functions) is selected, go on to step 3. 
Wh en F1 or F6 is selected (these have no sub-functions), go on to step 
5.
3.Press the [+/YES] button to enter the sub-function.
4.Use the [TEMPO/FUNCTION –, +] buttons to select 
the desired sub-function.
In the example below, the sub-functions of F4 (Split) are shown.
5.Use the [–/NO] and [+/YES] buttons to change the 
ON/OFF setting, select the type, or change the value.
The default setting (which is used when you first turn on the power to the 
instrument) is recalled by pressing the 
[–/NO] and [+/YES] buttons simulta-
neously.
6.Press the [TEMPO/FUNCTION] to exit the Function.
The [TEMPO] indicator lights.
124 653
Functions cannot be selected 
during Demo/PRESET/USER/USB 
song playback or in the File Oper-
ation and Record modes.
To  cancel the function in step  2, 3 , 
or  4, press the  [TEMPO/FUNC-
TION –, +]  button any time to exit 
Function. 
NOTE
NOTE
Desired function Sub- function
Desired 
function
Sub-function
After you select the function, the 
current setting will be displayed 
when the  [–/NO] or [+/YES]  but-
ton is pressed for the first time.
NOTE 
						

							Detailed Settings – [FUNCTION]
P-155 Owner’s Manual
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40
About Each Function
The explanations here apply when entering the Function in step  5 on page 39.
Y ou can fine tune the pitch of the entire instru-
ment. This function is useful when you play 
the instrument along with other instruments 
or CD music.
Use the [–/NO] and [+/YES] buttons to lower 
or raise the pitch of the A3 key in approxi-
mately 0.2 Hz increments.
Te nths of a hertz are indicated on the display by the 
appearance and position of a dot, as in the following 
e xample:
Y ou can select various scales.
Equal Temperament is the most common con-
temporary piano tuning scale. However, his-
tory has known numerous other scales, many 
of which serve as the basis for certain genres of 
music. You can experience these tunings with 
the instrument.
F2.1: Scale
Setting range: 1: Equal Temperament 
2: Pure Major 
3: Pure Minor 
4: Pythagorean
5: Mean Tone
6: Werckmeister
7: Kirnberger
Default setting: 1: Equal Temperament
EQUAL TEMPERAMENT 
The pitch range of each octave is divided equally into 
twelve parts, with each half-step evenly spaced in pitch. 
This is the most commonly used tuning in music today.
PURE MAJOR/PURE MINOR
These tunings preserve the pure mathematical intervals of 
each scale, especially for triad chords (root, third, fifth). 
You can hear this best in actual vocal harmonies - such as 
ch oirs and a cappella singing.
PYTHAGOREAN
This scale was devised by the famous Greek philosopher 
and is created from a series of perfect fifths, which are col-
lapsed into a single octave.
The 3rd in this tuning are slightly unstable, but the 4th and 
5th are beautiful and suitable for some leads.
MEAN-TONE
This scale was created as an improvement on the 
Pythagorean scale, by making the major third interval more 
“in tune.” It was especially popular from the 16th century 
to  the 18th century. Handel, among others, used this scale.
WERCKMEISTER/KIRNBERGER
This composite scale combines the Werckmeister and Kirn-
berger systems, which were themselves improvements on 
the mean-tone and Pythagorean scales. The main feature of 
this scale is that each key has its own unique character. The 
scale was used extensively during the time of Bach and 
Beethoven, and even now it is often used when performing 
period music on the harpsichord.
F1. Fine Tuning of the Pitch
Display Value
440.0 Setting range:
440.2  427.0–453.0 (Hz)
440.4 Default setting:
446.6  440.0 (Hz)
453.0
TERMINOLOGY
Hz (Hertz):
This unit of measurement refers to the frequency of a sound and 
r epresents the number of times a sound wave vibrates in a second.
Using the keyboard to set the pitch
Y ou can fine tune the pitch by pressing a key on the 
ke yboard, without having to call up the FUNCTION 
display. See the “Panel Controls and Terminals” 
(page 8) for the key (note) name.
To  tune up (in roughly 0.2Hz steps):  Hold the A-1, 
B-1, and C0 keys simultaneously and press any key 
between C3 and B3.
To  tune down (in roughly 0.2Hz steps):  Hold the A-
1, B-1, and C #0 keys simultaneously and press any 
ke y between C3 and B3.
To  restore standard pitch:  Hold the A-1, B-1, C0, 
and C #0 keys simultaneously and press any key 
between C3 and B3.
To  tune down or up, respectively, in approximately 
1 Hz increments:  Hold the A-1, B-1 and C0 keys or 
the A-1, B-1 and C #0 keys simultaneously and press 
the  [–/NO]  or [+/YES]  button.
To  restore standard pitch:  H old the A-1, B-1 and C0 
ke ys or the A-1, B-1 and C #0 keys simultaneously 
and press the  [–/NO] [+/YES]  buttons simulta-
neously.
F2. Selecting a Scale