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Violin/Cello/Viola/Bass AUTO TUNER
YT -240
YT -240
OWNER'S MANUAL
Thank you for purchasing the YAMAHA YT-240 Violin/Cello/
Viola/Bass Auto Tuner.
Please read this manual thoroughly and keep it in a safe place for
future reference.
I PRECAUTIONS
N To prevent damage, do not use the tuner in the following locations:
• places where the unit will be in direct sunlight;
• places subject to temperature and humidity extremes;
• places that are sandy or dusty.
N To power the tuner, use only a 6F22 or 006P 9V dry cell battery.
N For maximum battery life, always be sure the tuner is turned OFF when not in
use.
N If an exhausted battery is left in the unit for an extended period of time, it may
leak and cause malfunctioning of the unit. When the battery becomes
exhausted, always remove it and replace it as soon as possible.
N Do not subject the tuner to strong physical shock or vibration. Do not use
excessive force on any of the controls.
N Never use solvents such as benzene or thinner to clean the tuner. Wipe clean
with a soft, dry cloth.
N After reading the owner's manual, keep it in a safe place for future reference.
Never dispose of used batteries by burning them.
Also make sure to keep batteries away from children.
I BATTERY REPLACEMENT
When battery power runs down, the
LCD indicator will grow dim.
Continued use of the tuner may result in
inaccurate operation. Replace the
battery with a new one (6F22 or 006P
9V dry cell battery) as soon as possible.
The battery compartment is in the rear
of the tuner. Remove the old battery
and replace it with a new one of the
same type. Be careful to connect the
battery in the correct polarity.
u
* Always turn the POWER switch
I SPECIFICATIONS
Indicators
: Liquid crystal display, Tuning guides
Tuning Notes
: Violin
Cello, Viola
Bass
Note Setting Range
: A0 (27Hz) – C8 (4186Hz)
: ±1 cent
Accuracy
: ±3 cent
In Pitch Accuracy
Standard Pitch Setting Range
: A4=435 – 446Hz (1Hz steps)
Input
: INPUT (6
Output
: OUTPUT (6
Power Source
: 9V dry cell battery (006P or 6F22)
Battery Life
: Approximately 50 hrs. (AUTO mode)
Dimensions (W x H x D)
: 118 x 63 x 24.5 mm (4.6" x 2.5" x 1.0")
Weight (including battery)
: 130 g (4.6 oz)
Accessory
: 9V dry cell battery (6F22) x 1
* Specifications and external appearance are subject to change without notice.
I TILT SLIT
The tuner can be tilted back by using the slit in the rear panel. Insert a coin or
similar flat object into the slit and tilt back as shown in the diagram below.
FCC INFORMATION (U.S.A.)
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
This product, when installed as indicated in the instructions contained in this manual,
meets FCC requirements. Modifications not expressly approved by Yamaha may void
your authority, granted by the FCC, to use the product.
2. IMPORTANT:
When connecting this product to accessories and/or another product
use only high quality shielded cables. Cable/s supplied with this product MUST be used.
Follow all installation instructions. Failure to follow instructions could void your FCC
authorization to use this product in the USA.
3. NOTE:
This product has been tested and found to comply with the requirements listed
in FCC Regulations, Part 15 for Class "B" digital devices. Compliance with these re-
quirements provides a reasonable level of assurance that your use of this product in a
residential environment will not result in harmful interference with other electronic de-
vices. This equipment generates/uses radio frequencies and, if not installed and used
according to the instructions found in the users manual, may cause interference harmful
to the operation of other electronic devices. Compliance with FCC regulations does not
guarantee that interference will not occur in all installations. If this product is found to
be the source of interference, which can be determined by turning the unit "OFF" and
"ON", please try to eliminate the problem by using one of the following measures:
Relocate either this product or the device that is being affected by the interference.
Utilize power outlets that are on different branch (circuit breaker or fuse) circuits or
install AC line filter/s.
In the case of radio or TV interference, relocate/reorient the antenna. If the antenna
lead-in is 300 ohm ribbon lead, change the lead-in to co-axial type cable.
If these corrective measures do not produce satisfactory results, please contact the
local retailer authorized to distribute this type of product. If you can not locate the
appropriate, please contact Yamaha Corporation of America, Electronic Service Divi-
sion, 6600 Orangethorpe Ave, Buena Park, CA 90620
The above statements apply ONLY to those products distributed by Yamaha
Corporations of America or its subsidiaries.
持込修理
品 名 ／ 品 番
バイオリン／チェロ／ビオラ／ベースオートチューナー／YT-240
保 証 期 間
本体：お買上げの日から1ヶ年間
※お買上げ日
年 月 日
ご住所 〒
お
客
様
お名前
電 話
店
名
印
※
販
住
所
売
店
電
話
ご販売店様へ ※印欄は必ずご記入してお渡しください。
Battery cover
Bottom side
6F22 or 006P
9V dry cell battery
to "OFF" before changing the battery.
G, D, A, E
C, G, D, A
E, A, D, G
monaural), microphone
monaural)
様
（
）
（
）
I COMPONENTS
q
e
MODE switch
I TUNING PROCEDURES
Two tuning modes are available for tuning. The Auto (AUTO) mode
automatically selects the closest note name to the pitch received by the tuner
and indicates whether the pitch is high or low. The Manual (MANL.) mode allows
the user to manually select the note to be tuned. Press the MODE e switch to
select the desired tuning mode. The selected mode, AUTO or MANL., is
displayed on the lower left hand corner of the LCD display q.
* Pressing the NOTE t switch while in the Auto mode also switches the tuner to the
Manual mode.
We recommend the use of the Manual mode for tuning the
instrument after the installation of new strings or when string's pitch
is extremely out of tune.
G Auto Tuning: AUTO
1. For instruments equipped with a pickup or mic, connect the instrument or
mic cable directly to the tuner's INPUT o jack. (Connecting the OUTPUT
i jack to an amp allows the amp to receive the instrument's signal whether
the tuner's power is on or off. However, it might result in added noise to the
line so you should switch the tuner's power off during performance.)
* The built-in microphone y will not operate when a cable is connected to the
tuner's INPUT o jack.
To tune instrument's not equipped with a pickup or mic, use the tuner's
built-in microphone and play the note as close to the tuner as possible
during step 5.
2. Turn the POWER u switch ON.
The standard pitch (factory preset A4=440Hz) will flash on the LCD display
q for about 2 seconds. After that, the tuner will automatically enter the
Auto tuning mode (AUTO will appear on the display q).
3. Use the PITCH r switch to change the standard pitch (see to the "Setting
the Standard Pitch" section below).
4. Press the MODE e switch to select the instrument to be tuned. The
selected instrument will be indicated on the display q (Violin, Cello/Viola or
Bass).
At this time, the note names are displayed in the string order (low
string m high string) of the instrument selected in the note display.
5. Pluck the string to be tuned (do not pluck more than 1 string at a time).
Use the note name, indicated on the display q, the needle and tuning
guide w as a reference while tuning the instrument.
5-1. First, approximately adjust the string so that the indicator for the
appropriate string name flashes.
5-2. Next, tune the string until the needle rests in the center and the green
LED of the tuning guide w lights.
Example) Using the AUTO mode to tune a violin's "G" string.
Select Violin on
the LCD indicator.
Select the AUTO
mode.
The note name of the string to
be tuned flashes.
G Manual Tuning : MANL.
1. Carry out the same settings as described in steps 1-4 in the AUTO tuning
section.
2. Continue to press the NOTE t switch until the desired note name
flashes. The tuner is now in the manual mode and "MANL." appears on
the display q.
3. As in step 5 of the AUTO tuning section, pluck the string to be tuned.
Proceed to tune the string.
4. Repeat steps 2 and 3 to tune the other strings.
I SETTING THE STANDARD PITCH
1. Turn the POWER switch u ON. The pitch is set to 440 Hz (flashing
display).
2. Continuously press the PITCH switch r until the desired standard pitch
(435 – 446Hz) is selected.
435→436→437→438→439→440→441→442→443→444→445→446
3. When the PITCH switch r has not been pressed for about 2 seconds, the
tuner will automatically return to the tuning mode.
* When the POWER switch u is turned OFF, the standard pitch setting will be
reset to A=440Hz.
THIS DIGITAL APPARATUS DOES NOT EXCEED THE "CLASS B" LIMITS FOR RADIO
NOISE EMISSIONS FROM DIGITAL APPARATUS SET OUT IN THE RADIO INTERFER-
ENCE REGULATION OF THE CANADIAN DEPARTMENT OF COMMUNICATIONS.
保証書
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修理（サービス）メモ
年 月 日
内 容
国内楽器営業本部 管弦打学校営業統括部 企画推進室
〒108-8568 東京都港区高輪2丁目17-11 TEL 03-5488-1690
w
Tuning guide
y
LCD indicator
Built-in microphone
t
NOTE switch
r
PITCH switch
Tune until needle comes to
rest in the center.
When this LED lights,
the string is tuned.
担 当 者
印
u
POWER
switch
i
OUTPUT
jack
o
INPUT
jack
Standard Pitch is
displayed.
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