Sony MDR DS4000 Manual

To prevent fire or shock hazard, do not
place objects filled with liquids, such as
vases, on the apparatus.

To avoid electrical shock, do not open
the cabinet. Refer servicing to qualified
personnel only.

Do not install the appliance in a
confined space, such as a bookcase or
built-in cabinet.

Owner’s Record
The model number is located at the
bottom of the processor and the left
inner side of the headband.
The serial number is located at the
bottom of the processor and the inner
side of the battery compartment.
Record these numbers in the spaces
provided below. Refer to them whenever
you call upon your Sony dealer
regarding this product.

Model No. MDR-DS4000

Processor DP-IF4000
Headphones MDR-IF4000

Serial No.

Processor
Headphones

NOTE
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.

You are cautioned that any changes or
modifications not expressly approved in this
manual could void your authority to operate
this equipment.