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Yamaha DSP-A3090 Operation Manual Page 3

Yamaha digital sound field processing amplifier operation manual.
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Damage Requiring Service – The unit should
be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been
B. Objects have fallen, or liquid has been spilled
into the unit;
C. The unit has been exposed to rain;
D. The unit does not appear to operate normally
or exhibits a marked change in performance;
E. The unit has been dropped, or the cabinet
Servicing – The user should not attempt to
service the unit beyond those means described
in the operating instructions. All other servicing
should be referred to qualified service personnel.
Power Lines – An outdoor antenna should be
located away from power lines.
Grounding or Polarization – Precautions
should be taken so that the grounding or
polarization is not defeated.
FCC INFORMATION (for US customers only)
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
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
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 Electronics Corp., U.S.A. 6660 Orangethorpe Ave, Buena Park, CA 90620.
The above statements apply ONLY to those products distributed by Yamaha Corporation of
America or its subsidiaries.


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  • lawrence Jun 25, 2015 02:24:
    I absolutely refuse to read this excuse of the alleged printed word any farther. I am insulted by the fact that the printing is encoded. What kind of machine printed these words? You should be ashamed of yourselves​. Was this an attempt to somehow save money? Did you have any of your own employees try to read this aloud ? Get real!