Sony mdr if 510 service manual

Page 1

g

AEP Model
E Model
US Model

SPECIFICATIONS
Infrared wavelength: 850 nm
Modulation: Frequency modulation
Carrier frequency: Right 2.8 MHz
Left 2.3 MHz
Effective range: Up to 7 m (23 ft)
Frequency response: 18722000 Hz

Distortion:
Power source:

Less than 1% at 1 kHz

DC 3 V; two size AA (R6) batteries
or two rechargeable batteries,
NC-SWM or NC-5WM (not supplied)
Weight: Approx. 180 g (6.3 02.) including
size AA (R6) batteries

Design and specifications subject to change without notice.

' [overview

The MDR-IF51O is a cordless stereo headphone which uses
infrared rays, By using with the infrared transmitter (not
supplied) with this unit, you can listen to a program free from
the restriction of a headphone cord.

If you use the headphones at too great a distance from the
emitter, you may hear a hissing 'sound and if there is an
object between the headphones and the emitter, the sound
may be interrupted. These phenomena are inherent to
infrared-ray communication and do not mean there is a
problem with the unit itself.

CURDLESS STEREO HEADPHONES

SONXQ

Page 2

MDR-IF51O

SECTION 1
GENERAL

Parts Identification

1 Open the battery compartment cover.

2 Insert batteries as shown on the cover.

3 Close the battery compartment covert

[2 Infrared sensors

E] Ear ads The headphones can be powered by two size AA (R6)
p batteries or the NC-6WM/NC-5WM rechargeable batteries (not

I' . A t f '
E POWER switch and indicator supp led) Iways use the same ype 0 batteries for right and

Press the swrtch to turn on the power at headphones When power is left banew compartments. _
turned on. the red indicator glows To turn oltt press u again When you use the rechargeable batteries, use the dedicated
When the headphones are kept turned on tor more than three hours. they battery charger BC-7L, Refer to the operating instructions

at fl l to ll to revent batter drain, V . r .
m me o 8 mm a y p y which come With the charger for charging operation.

VOL (volume) COMVO'S When the batteries get weak
Adlus 9 'eve' 7' 8" Charms" The POWER indicator dims, and hissing sound increases. In
this case, replace (or charge) both batteries.

ter com artment covers _ . . , .
E Bat y p The apprOXImate battery life for continuous operation IS as

follows:
Sony alkaline battery AM-G: 90 hours
Sony battery SUM-3 NS' 45 hours

Rechargeable battery NCVSWM: 25 hours
Rechargeable battery NC-SWM: 20 hours