Precautions, Warning precautions – Sony STR-DA50ES User Manual
Page 2
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WARNING
Precautions
To prevent fire or shock
hazard, do not expose the 
unit to rain or moisture.
A
This symbol is intended to alert the user to 
the presence of uninsulated "dangerous 
voltage" within the product's enclosure 
that may be of sufficient magnitude to 
constitute a risk of electric shock to 
persons.
A
This symbol is intended to alert the user to 
the presence of important operating and 
maintenance (servicing) instructions in the
literature accompanying the appliance.
INFORMATION
This equipment has been tested and found 
to comply with the limits for a Class B 
digital device, pursuant to Part 15 of the 
FCC Rules.
These limits are designed to provide 
reasonable protection against harmful 
interference in a residential installation. 
This equipment generates, uses, and can 
radiate radio frequency energy and, if not 
installed and used in accordance with the 
instructions, may cause harmful 
interference to radio communications. 
However, there is no guarantee that 
interference will not occur in a particular 
installation. If this equipment does cause
harmful interference to radio or television
reception, which can be determined by 
turning the equipment off and on, the user 
is encouraged to try to correct the 
interference by one or more of the 
following measures:
- Reorient or relocate the receiving 
antenna.
- Increase the separation between the
equipment and receiver.
- Connect the equipment into an outlet on
a circuit different from that to which the 
receiver is connected.
- Consult the dealer or an experienced
radio/TV technician for help.
CAUTION
You are cautioned that any changes or 
modification not expressly approved in 
this manual could void your authority to 
operate this equipment.
Note to CATV system installer:
This reminder is provided to call CATV 
system installer's attention to Article 820- 
40 of the NEC that provides guidelines for 
proper grounding and, in particular, 
specifies that the cable ground shall be 
connected to the grounding system of the 
building, as close to the point of cable 
entry as practical.
Owner's Record
The model and serial numbers are located 
on the rear of the unit. Record the serial 
number in the space provided below. 
Refer to them whenever you call upon 
your Sony dealer regarding this product.
Model No. STR-DA50ES 
Serial No_______________
For the customers in Canada
CAUTION
TO PREVENT ELECTRIC SHOCK, DO 
NOT USE THIS POLARIZED AC PLUG 
WITH AN EXTENSION CORD, 
RECEPTACLE OR OTHER OUTLET 
UNLESS THE BLADES CAN BE FULLY 
INSERTED TO PREVENT BLADE 
EXPOSURE.
On safety
Should any solid object or liquid fall into 
the cabinet, unplug the receiver and have it 
checked by qualified persormel before 
operating it any further.
On power sources
• Before operating the receiver, check that
the operating voltage is identical with 
your local power supply. The operating 
voltage is indicated on the nameplate at 
the rear of the receiver.
• The unit is not disconnected from the AC
power source (mains) as long as it is 
connected to the wall outlet, even if the 
unit itself has been turned off.
• If you are not going to use the receiver
for a long time, be sure to disconnect the 
receiver from the wall outlet. To 
discormect the AC power cord, grasp the 
plug itself; never pull the cord.
• One blade of the plug is wider than the
other for the purpose of safety and will 
fit into the wall outlet only one way. If 
you are unable to insert the plug fully 
into the outlet, contact your dealer.
• AC power cord must be changed only at
the qualified service shop.
On placement
• Place the receiver in a location with
adequate ventilation to prevent heat 
buildup and prolong the life of the 
receiver.
• Do not place the receiver near heat
sources, or in a place subject to direct 
sunlight, excessive dust or mechanical 
shock.
• Do not place anything on top of the
cabinet that might block the ventilation 
holes and cause malfunctions.
On operation
Before connecting other components, be 
sure to turn off and unplug the receiver.
On cleaning
Qean the cabinet, panel and controls with 
a soft cloth slightly moistened with a mild 
detergent solution. Do not use any type of 
abrasive pad, scouring powder or solvent 
such as alcohol or benzine.
If you have any question or problem 
concerning your receiver, please 
consult your nearest Sony dealer.