SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
MDR-NC300D
SPECIFICATIONS
NOISE CANCELING HEADPHONES
9-889-563-03
2010A05-1
©
2010.01
US Model
AEP Model
UK Model
E Model
Chinese Model
Tourist Model
Ver. 1.2 2010.01
General
Type: dynamic, closed
Wear method: vertical in-the-ear
Driver units: 16 mm, dome type
(CCAW adopted)
Power handling capacity:
100 mW
Impedance: 16 (at 1 kHz)
Sensitivity: 103 dB/mW
Frequency response:
6 – 24,000 Hz
Total Noise Suppression Ratio*
2
:
Approx. 18 dB*
1
Cord: 1.2 m (47 1/4 in) OFC litz
cord
Plug: Gold-plated stereo
mini-plug
Power source: DC 1.5 V, 1 × AA/LR6 dry
battery
Mass: Headphones section:
Approx. 8 g (without cord)
Control box section:
Approx. 53 g (without
cord, including battery)
Supplied accessories
Extension cord (1 m, gold-plated stereo
mini-plug) (1) (Except US)
Cord adjuster (1)
Clip (1)
Plug adaptor for in-ight use*
3
(single/dual) (1)
Carrying case (1)
Carryin
g pouch (1)
Earbuds (SS × 2, S × 2, MS × 2, M × 2, ML × 2,
L × 2, LL × 2)
Sony alkaline AA/LR6 dry battery (1) (US,
Operating Instructions (1)
Product Information (1)
*
1
Equivalent to approx. 98.4 % reduction of
energy of sound compared with not
wearing headphones (NC MODE A).
*
2
Under the Sony measurement standard.
For details about the Total Noise
Suppression Ratio amount for each mode,
refer to the Product Information booklet.
*
3
May not be compatible with some in-ight
music services.
Design and specications are subject to
change without notice.
Battery life
Battery Approx. hours*
1
Sony alkaline AA/LR6
dry battery
20 hours*
2
*
1
At 1 kHz, 0.1 mW + 0.1 mW output
*
2
Time stated above may vary, depending on
the temperature or conditions of use.
AEP, UK and Tourist models)
Card warranty (1) (US, AEP, UK, Chinese and
Tourist models)
Extension cord (0.6 m (23 / in), gold-plated
stereo mini-plug) (1) (US)
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
• Keep the temperature of soldering iron around 270 °C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
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General
Weight and Dimensions
