Sony MDR-NC300D Service Manual

SERVICE MANUAL
Ver. 1.2 2010.01
SPECIFICATIONS
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 Ω (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 (0.6 m (23 5/8 in), gold-plated
stereo mini-plug) (1) (US)
Extension cord (1 m, gold-plated stereo
mini-plug) (1) (Except US)
Cord adjuster (1)
Clip (1)
Plug adaptor for in-flight use* 3 (single/dual) (1)
Carrying case (1)
Carrying 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,
AEP, UK and Tourist models)
Operating Instructions (1)
Product Information (1)
Card warranty (1) (US, AEP, UK, Chinese and
Tourist models)
Sony Corporation
9-889-563-03
2010A05-1 Audio&Video Business Group
©
2010.01 Published by Sony Techno Create Corporation
MDR-NC300D
* 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-flight
music services.
Battery life
Battery Approx. hours* 1
Sony alkaline AA/LR6 20 hours* 2
dry battery
* 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.
Design and specifications are subject to
change without notice.
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.
NOISE CANCELING HEADPHONES
US Model
AEP Model
UK Model
E Model
Chinese Model
Tourist Model