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XMV4280/XMV4140 Owner’s Manual
5
• Do not insert your fingers or hands in any gaps or openings on the device
(vents).
• Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into
any gaps or openings on the device (vents) If this happens, turn off the
power immediately and unplug the power cord from the AC outlet. Then
have the device inspected by qualified Yamaha service personnel.
• Do not rest your weight on the device or place heavy objects on it, and avoid
use excessive force on the buttons, switches or connectors.
• Do not use speakers for a long period of time at a high or uncomfortable
volume level, since this can cause permanent hearing loss. If you experience
any hearing loss or ringing in the ears, consult a physician.
• This device has a built-in backup battery. When you unplug the power cord
from the AC outlet, the internal data is retained. However, if the backup
battery fully discharges, this data will be lost. When the backup battery is
running low, the display indicates “010.” or “011.” and the ALERT indicator
is blinking. In this case, immediately save the data to external device such as
a computer, then have qualified Yamaha service personnel replace the
backup battery.
Always turn the power off when the device is not in use.
NOTICE
To avoid the possibility of malfunction/ damage to the product, damage to data, or damage to other property, follow the notices below.
Handling and Maintenance
• Do not use the device in the vicinity of a TV, radio, stereo equipment, mobile phone, or other electric devices. Otherwise, the device,
TV, or radio may generate noise.
• Do not expose the device to excessive dust or vibration, or extreme cold or heat (such as in direct sunlight, near a heater, or in a car
during the day), in order to prevent the possibility of panel disfiguration, unstable operation, or damage to the internal components.
• Do not place vinyl, plastic or rubber objects on the device, since this might discolor the panel.
• When cleaning the device, use a dry and soft cloth. Do not use paint thinners, solvents, cleaning fluids, or chemical-impregnated wip-
ing cloths.
• Condensation can occur in the device due to rapid, drastic changes in ambient temperature—when the device is moved from one
location to another, or air conditioning is turned on or off, for example. Using the device while condensation is present can cause dam-
age. If there is reason to believe that condensation might have occurred, leave the device for several hours without turning on the
power until the condensation has completely dried out.
• Do not use this device for any purpose other than driving loudspeakers.
• When turning on the AC power in your audio system, always turn on tthe device LAST, to avoid speaker damage. When turning the
power off, the device should be turned off FIRST for the same reason.
• Always turn the power off when the device is not in use.
Saving data
This device has a built-in backup battery that maintains data in internal memory even when the device’s power is switched off. The
backup battery will eventually become depleted, however, and when that happens the contents of the internal memory will be lost.*
To prevent loss of data be sure to replace the backup battery before it becomes fully depleted. When the remaining capacity of the
backup battery becomes so low that it needs to be replaced a “010.” or “011.” message will appear on the display during operation or
when the device is powered on. If either of these messages appears do not turn off the power and immediately transfer any data you
want to save to a computer or other external storage device, then have qualified Yamaha service personnel replace the backup battery.
The average life of the internal backup battery is approximately 5 years, depending on operating conditions.
* Data items maintained in the internal memory by the backup battery are as follows:
• Device parameters (Attenuator values, Polarity settings, HPF settings, Analog/digital input setting, and [SIGNAL] indicator display
setting).
• Event log.
Information
About this manual
• The illustrations as shown in this manual are for instructional purposes only, and may appear somewhat different from those on your
device.
• The company names and product names in this manual are the trademarks or registered trademarks of their respective companies.
Handling caution
Backup battery
Yamaha cannot be held responsible for damage caused by improper use or modifications to the device, or data that is lost or destroyed.
European Models
Inrush Current based on EN 55103-1:2009
10A (on initial switch-on)
5A (after a supply interruption of 5s)
Conforms to Environments: E1, E2, E3 and E4
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