Precautions
MX12/4—Owner’s Manual
1. Avoid Excessive Heat, Humidity, Dust and Vibration
Keep the unit away from locations where it is likely to be
exposed to high temperatures or humidity — such as
near radiators, stoves, etc. Also avoid locations which
are subject to excessive dust accumulation or vibration
which could cause mechanical damage.
2. Ventilation
The unit has ventilation slots on the rear and bottom
panels. Do not block these vents.
3. Avoid Physical Shocks
Strong physical shocks to the unit can cause damage.
Handle it with care.
4. Do Not Open the Case or Attempt Repairs or Modi-
fications Yourself
This product contains no user-serviceable parts. Refer
all maintenance to qualified Yamaha service personnel.
Opening the case and/or tampering with the internal
circuitry voids the warranty.
5. Always power off before making connections
Always turn the power OFF before connecting or dis-
connecting cables. This is important to prevent damage
to the unit itself as well as other connected equipment.
6. Handle Cables Carefully
Always plug and unplug cables — including the AC
power cord — by gripping the connector, not the cord.
7. Clean With a Soft Dry Cloth
Never use solvents such as benzine or thinner to clean
the unit. Wipe clean with a soft, dry cloth.
8. Always Use the Correct Power Supply
Make sure that the power supply voltage specified on the
rear panel matches your local AC mains supply. Also
make sure that the AC mains supply can deliver more
than enough current to handle all equipment used in
your system.
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 requirements 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 devices. 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 coaxial 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 retailer, please contact Yamaha Corporation
of America, Electronic Service Division, 6600 Orangethorpe Ave,
Buena Park, CA 90620
* This applies only to products distributed by YAMAHA
CORPORATION OF AMERICA.
IMPORTANT NOTICE FOR
THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT: The wires in this mains lead are coloured in accordance with
the following code:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may not
correspond with the coloured markings identifying the terminals in your
plug, proceed as follows:
The wire which is coloured GREEN and YELLOW must be connected to
the terminal in the plug which is marked by the letter E or by the safety earth
symbol or coloured GREEN and YELLOW.
The wire which is coloured BLUE must be connected to the terminal which
is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal
which is marked with the letter L or coloured RED.
* This applies only to products distributed by YAMAHA KEMBLE
MUSIC (U.K.) LTD.